SECTION V

PERFORMANCE MEASUREMENT DATA ON EACH OF THE

SAMPLE INSTRUMENTS FOR EACH MODEL SUBMITTED

AND SUBJECTED TO THE REGULAR EVALUATION

PROCEDURES.

NATIONAL BUREAU OF STANDARDS REPORT T5'"^^0

January, 1974

NBS PROJECT

2130680

ACOUSTICAL PERFORMANCE OF A GROUP OF HEARING AIDS

by

E. D. Burnett and M. A. Bassin

Report to

Veterans Administration

Department of Medicine and Surgery

Washington, D.C.

NBS

U.S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS

77
ACOUSTICON IE

MODEL :A465SSR T0NE:N0NE BATTERY:S312

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN

HARMONIC DIST

aiNPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FREQ OF MAX

S/N RATIO

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

AC-220

52344

28.0

83.0

96.0

AC-221

52290

MAY 24, 1973

29. 0

AC-222

62208

82.0

97. 0

33.0

83.0

98.0

DB 28. O(FULL) 29. 0( FULL) 33. 0( FULL)

DB 68.0 78.0 66.5 76.5 66.0 76.0

% 4 9 4 6 6 14

% 2 7 2 5 3 8

% 3 10 3 8 9 0

% 4 10 4 8 9 14

DI S 500 900 500 900 900 500

DB

34. 5 34.5 38.0

DB

N.M • N.M. N.M.

.7- .7

1. 53

. 7

.7

1. 53

.8

.8

1.54

78
FREQUENCY IN CYCLES PER SECOND

79
(

FREQUENCY IN CYCLES PER SECOND

80
ACOUSTICON OE

M0DEL:A690 TONE:A TUBING:! 1/4 BATTERY:S76

cczs

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC OIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

AC-223 AC-224 AC-225

342122 462214 512804

FEB 15, 1973

54.0

78.0

120.0

51.0

81.0

120.5

53.0

77.0

118.0

50. 5

60.0 70.0

7 19

3 8

2 6

10 25

596 596

45.0

N.M.

2.1

2.1

1.55

49. 5 60.0 70.0

6 15

4 13

2 5

14 34

657 659

43. 5

N.M.

2.0

2.0

1.49

48.5

60.0 70.0

10 24

8 21

1 4

10 24

500 500

45. 0

N.M.

2.1

2. 1 1.55

81
82
FREQUENCY IN CYCLES PER SECOND

83
ACOUSTICON OE HIGH PASS

MODEL :A690ATC T0NE:C TUBING:l 1/4 BATTERY:S76

CODE AC-226

SERIAL # 432386

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST Z

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO UB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

48. 5

80.0

120.0

48. 5(FULL)

6 2.0 72.0

2 8

2 5

0 0

4 11

1000 1000

42.5

N.M.

2.2

2.2

1.56

AC-227

492341

FEB 26, 1973

50.0

81.0

120.5

AC-228

512855

50.0(FULL)

62.0 72.0

3 8

2 4

0 0

4 10

1000 1000

46. 0

N.M.

2.6

2.6

1.55

50.0

84.0

121.0

50.0(FULL)

63.0 73.0

2 4

2 5

0 0

3 7

1400 1400

45.5

N.M.

2.2

2.2

1.55

S/N 2KHZ 48.0 50.0 49.5

84

FREQUENCY IN CYCLES PER SECOND

86
ACOUSTICON OE

M0DEL:A690ET TONE:A TUBING:! 1/4 BATTERY:S76

CODE AC-229 AC-230 AC-231

SERIAL # 522127 522160 522236

DATE FEB 20t 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 54,0 53-0 51.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 80.0 80.0 80.0

OUTPUT LEVEL DB 119.5 121.0 121.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 50.5 52. 5 51. 0( FULL)

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0 60.0 70.0 60.0 70.0

500 HZ % 15 35 8 22 10 22

700 HZ % 5 16 4 11 2 7

900 HZ % 3 11 1 7 1 2

MAX DIST % 15 35 8 22 10 22

FREQ OF MAX DIS 500 500 500 500 500 500

S/N RATIO DB

IKHZ SIGNAL 44.0 44. 5 44.0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M.

BATTERY DRAIN* MA

NO INPUT 2. 1 2.1 2.1

65 DB INPUT 2. 1 2.1 2.

BATTERY VOLTAGE 1.56 1.54 1.54

S7

FREQUENCY IN CYCLES PER SECOND

» 89
ACOUSTICON OB

MODEL:A770G T0NE:CCW PWR:CCW EARPH0NE:CF8 BATTER I E

: 401 ( 2

)

CODE

SERIAL #

DATE

AC^232

202436

AC-233 AC-234

222185 472304

FEB 20, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 73.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 67.0

OUTPUT LEVEL DB 133.5

73.0

67.0

134.0

74.0

68.0

134.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 64.0

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0

500 HZ % 5 13

700 HZ % 6 14

900 HZ % 7 13

MAX DIST % 7 14

FREO OF MAX DIS 900 700

S/N RATIO DB

IKHZ SIGNAL 45.5

S/HUM RATIO DB

IKHZ SIGNAL N.M.

BATTERY DRAIN, MA

NO INPUT 3.9 3.9

65 DB INPUT 7.8 7.8

BATTERY VOLTAGE 1.43 1.42

63. 0

60.0 70.0

48.0

N.M.

3.3 3.3

10.5 14.0

1.40 1.40

63.5

60.0 70.

4 8 3 9

1 ^ 13 2 10

4 15 4 13

4 15 4 13

900 900 900 900

47. 5

N.M.

3.6 3.6

11.0 11.0

1.40 1.42

90
91
92
ACOUSTICON EG

MODELtAlOOl T0NE:A TUBING:l 1/4 BATTERY:S13

CODE AC-235

SERIAL # 441425

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 46.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 76,0

OUTPUT LEVEL OB 119.0

AC-236

522203

FEB 21, 1973

48.0

78.0

117.5

AC-237

512116

45.0

77.0

117.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 OB INPUT

BATTERY VOLTAGE

46.0(FULL)

61.0 71.0

6 14

6

3

10

661

40.0

N.M.

1.3

1.3

1.54

17

8

31

633

48. 0( FULL)

60.0 70.0

9 21

5

3

10

578

38. 0

N.M.

1.4

1.4

1.52

15

10

25

628

45.0{FULL)

60.0 70.0

6 11

3

2

7

603

39.0

N.M.

1.3

1.3

1 . 53

10

9

17

622

93
94
FREQUENCY IN CYCLES PER SECOND

95
AUDIOTONE OE

M0DEL:A20 T0NE:N0NE TUBING:15/16 BATTERY:S76

CODE AT^232 AT-233 AT-234

SERIAL # 24751' 24761 24770

DATE FEB 28, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB D f . D MPO, RANDOM NOISE

INPUT LEVEL, DB 79. 0 73.0 75.0

OUTPUT LEVEL DB 121.5 121.0 122.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 53. 5(FULL

)

54.5 56.5

HARMONIC DIST

aiNPUT LEVEL DB 61,0 71.0 60.0 70.0 60.0 70.0

500 HZ % 5 15 6 12 5 13

700 HZ % 2 5 1 3 1 3

900 HZ % 1 4 1 1 1 1 MAX DIST % 6 27 6 21 6 19

FREO OF MAX OIS 591 585 500 1638 1763 1680

S/N RATIO DB

IKHZ SIGNAL 47.5 50.0 49.5

S/HUM RATIO DB

IKHZ SIGNAL N.M« N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 2. 3 2.3 2.3

65 DB INPUT 2.3 2. 3 2.3

BATTERY VOLTAGE 1 .55 1.55 1.53

96
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

97
98
AUDIOTONE OE HIGH PASS

MOOELtAZO-PS TONEiNONE TUBING:15/16 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL OB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

AT-235

24730

19. 5 89.0

118.5

19. 5(FULL)

69.0 79.0

9 9

6 14

3 10

9 40

900 1720

20.5

N.M.

2.7

2.7

1.55

AT-236

24741

FEB 27, 1973

20. 5

90.0

119.0

AT-237

24772

20.5(FULL}

70.0 80.0

7 8

7 20

5 12

11 45

1800 1740

21. 5

N.M.

2.3

2.3

1. 54

20.0

90.0

118.0

20.0(FULL)

70.0 80.0

5 7

14 42

10 27

25 83

1680 1620

20.0

N.M.

2.8

2.8

1. 54

S/N 2KHZ 40.0 43.5 43.0

99
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

100
FREQUENCY IN CYCLES PER SECOND

101
AUDIOTONE OE

M0DEL:A-22 T0NE:N0NE TUBING:15/16 BATTERY:S13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

1 KHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 OB INPUT

BATTERY VOLTAGE

AT-238 AT-239 AT-240

6920 6928 6940

FEB 23, 1973

53.0 53.0 56.5

70.0 73. 0 70. 0

113.0 114. 0 115.0

44.0 46. 0 47. 0

)0.0 70.0 60.0 70.0 60.0 70.0

13 39 10 29 8 24

4 12 3 8 2 7

2 24 3 7 2 6

13 39 10 29 8 24

500 500 500 500 500 500

46.5 46. 5 48. 5

N.M. N.M. N.M.

.7 .7 .8

.7 .7 .8

1.54 1.52 1.54

102

104
AUDIOTONE OE

M0DEL:A-23 T0NE:N0NE TUBING: 15/16 BATTERY:S76

CODE

SERIAL #

DATE

AT-241

3035

AT-242

3039

FEB 28, 1973

AT-243

3084

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 65.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 74.0

OUTPUT LEVEL DB 128.5

66.5

73.0

128.0

65.0

72.5

128.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

58.5

60.0 70.0

8 8

1 4

1 2

8 8

500 500

44.0

N.M.

.9

2.1

1.53

59.0

60.0 70.0

11 15

3 6

I 5

4 12

1327 1327

50.0

N.M.

.7

2. 1 1.55

60.5

60.0 70.0

6 17

2

16

500

46. 0

N.M.

.8

2. 1 1.55

9

7

17

500

105
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

106
FREQUENCY IN CYCLES PER SECOND

107
AUDIOTONE OE

M0DEL:A-24 T0NE:N0NE TUBING:15/16 BATTERY:S41

CODE

SERIAL #

DATE

AT-244

1010

AT-245

1022

FEB 28» 1973

AT-246

1049

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 47.5

MPOt RANDOM NOISE

INPUT LEVEL, DB 77.0

OUTPUT LEVEL DB 122.0

46. 0

76.0

121.0

46. 0

76,0

121.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

. NO INPUT

65 DB INPUT

BATTERY VOLTAGE

47. 5( FULL)

60.0 70.0

1 4

I8

21

900 1691

36.0

N.M.

2.4

2.4

1.55

45.0

60.0 70.0

1 3

0 1 0 5

1 25

500 1690

37.5

N.M.

2.3

2. 3

1.55

44.0

60.0 70.0

1 3

0

1

1

0

3

27

500 1686

37.0

N.M.

2.3

2.3

1.55

/

108
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

109

AUDIOTONE EG

M0DEL:B221 T0NE:N0NE TUBING:! 1/2 BATTERY:S76

CODE

SERIAL #

DATE

AT-247

2481

AT-248 AT-249

2503 2516

MAR 15, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 63.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 72.0

OUTPUT LEVEL DB 124.5

64.0

74.0

125.0

63.0

75.0

125.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

55. 5

60.0 70.0

8 10

2 5

1 2

8 10

500 500

44.5

N.M.

1.0

1.2

1 .55

56. 0

60.0 70.0

12 12

4

2

12

500

45.0

N.M.

.9

1.7

1. 54

4

3

12

500

56.0

60.0 70.0

8 13

10

8

500

44.0

N.M.

1.0

3. 1 1.54

6

0

13

500

in
FREQUENCY IN CYCLES PER SECOND

i

FREQUENCY IN CYCLES PER SECOND

112
FREQUENCY IN CYCLES PER SECOND

113
TONE :NONE

AUDIOTONE

model: A23A

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN

HARMONIC DIST

aiNPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FREO OF MAX

S/N RATIO

IKHZ SIGNAL

S/HUM PATIO

IKHZ SIGNAL

BATTERY DRAIN

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

OE SPECIAL

earphone: 1011-34 8ATTERY:S76

AT-250

2973

64.5

76.0

129.0

.8

1.55

AT-251

2981

MAR 15, 1973

69.5

AT-252

3019

75.0

133.5

.8

1.55

74.0

74.0

133.5

DB 62.5 62. 5 64.5

DB 60.0 70.0 60.0 70.0 60.0 70.0

% 2 10 5 6 3 6

% 2 9 5 2 4 2

% 1 1 0 1 1 1 % 3 12 7 6 3 6

D!S 745 743 772 500 727 500

DB

51.5 53.0 51.5

DP

N.M. N.M. N.M.

MA

.8 .8 .6

.6

1.55

THIS HEARING AID HAS AN EXTERNAL RECIEVER, WITH A

CORD GOING TO THE OPPOSITE EAR.

114
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

115
FREQUENCY IN CYCLES PER SECOND

116
AUDIVOX EG

MODEL:lllRD TONE:NONE TUBING:! 11/16 BATTERY:S76

CODE

SERIAL #

DATE

AU-235

30672

AU-236

32902

APR 13» 1973

AU-237

32913

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 57.0

MPOt RANDOM NOISE

INPUT LEVEL, DB 81.0

OUTPUT LEVEL DB 128.5

59.5

79.0

128.0

59.0

80.5

128.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 57.0(FULL) 59.5(FULL)

HARMONIC DIST

aiNPUT LEVEL OB 61.5 71.5 60.0 70.0

500 HZ % 3 6 4 8

700 HZ % 1 1 1 1 900 HZ % 0 2 0 0

MAX DIST % 3 6 4 8

FREQ OF MAX DIS 500 500 500 500

S/N RATIO DB

IKHZ SIGNAL 43. 0 44. 0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M.

BATTERY DRAIN, MA

NO INPUT .7 .8

65 DB INPUT 2.

1

2.0

BATTERY VOLTAGE 1.54 1. 54

57.5

60.0 70.0

6 8

1 2

0 1 6 8

500 500

42.5

N.M.

.9

2.4

1. 55

117
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

118
119
AUDIVOX EG

MODELxlllXR T0NE:N0NE EARPH0NE:F2 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPG, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

AU-238

32984

58.0

82.0

132.0

AU-239

32986

APR I3t 1973

56.0

81.0

129.5

AU-240

32987

56.5

80.5

131.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

58.0(FULL}

64.0 74.0

7 4

13

7

500

45.5

N.M.

. 8

3.7

1.53

2

5

5

900

56. O(FULL)

61.0

11

16

1530

71.0

3

4

2

5

770

43.0

N.M.

.8

3.5

1.55

56.5(FULL)

63.0 73.0

6 5

14

6

500 900

45.0

N.M.

.9

3.7

1.54

CROS HEARING AID WITH EXTERNAL RECEIVER.

120
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

121
11

1 FREQUENCY IN CYCLES PER SECOND

122
AUDIVOX EG

model: llZRli TONE :NONE TUBINGU 11/16 BATT ERY : RM675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

AU^241 AU-242 AU-243

38497 38501 38504

MAR 1, 1973

52.5

77.0

121.0

54.5

77.5

121.0

51.0

77.0

120.0

52.5(FULL)

60.0 70.0

3 2

1 1

1 4

3 40

500 1381

45. 0

N.M.

1.5

1.5

1.40

53.5

60.0 70.0

4 2

0 1 0 2

4 42

500 1446

45. 0

N.M.

1. 5

1.5

1.38

51.0(FULL)

61.0 71.0

4 3

1 1 0 1 4 23

500 1365

45.5

N.M.

1.8

1.8

1.45

123

FREQUENCY IN CYCLES PER SECOND

125
AUDIVOX OE

M0DEL:115 RD TONE:NONE TUBING:! BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

?INPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI S S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

AU-244 AU-245 AU-246

33313 35058 35265

MAR 15, 1973

61.0 61.5 62.5

73.0 77.0 78.0

125.5 127.5 128.0

56.0

60.0 70.0

13 7

5 4

3 3

12 7

500 500

50.5

N.M.

.6

1.4

1. 55

59.0

60.0 70.0

10 8

6 3

1 2

10 8

500 500

50.0

N.M.

. 5 1.9

1. 55

60.0

60.0 70.0

3 4

2 2

1 1 3 4

675 500

50.5

N.M.

.7

2. 1

1 .54

126
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

127
FREQUENCY IN CYCLES PER SECOND

128
AUDIVOX OB

M0DEL:118 TONEiRED DOT EARPH0NE:F-2 BATTERY:401

CODE AU'247

SERIAL # 30799

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 73.0

MPOt RANDOM NOISE

INPUT LEVEL, DB 63.0

OUTPUT LEVEL DB 131.0

AU-248

32212

MAR 1, 1973

73. 0

58.0

130.5

AU-249

32307

73.0

64.0

130.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

3)INPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

61.0

60.0 70.0

9 14

3

3

12

1401

6

3

14

5 00

40.0

N.M.

7.9

9.4

1.33

60.0

60.0

6

3

56

1432

70.0

12

8

7

12

5 00

40.5

N.M.

7.3

9.1

1. 33

60.0

60.0 70.0

7 11

2

2

8

141 8

6

3

11

500

40.0

N.M.

7.0

9.5

1.34

129
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

130
FREQUENCY IN CYCLES PER SECOND

131
AUDIVOX OE SPECIAL

M0DEL:119R T0NE:N0NE TUBING:! BATTERY:S41

CODE

SERIAL #

DATE

AU-250

38313

AU-25I

38330

JUNE 13, 197

AU-252

38858

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 41.0

MPOt RANDOM NOISE

INPUT LEVEL, DB 78.5

OUTPUT LEVEL DB 109.0

42.0

77,5

109.0

42.0

79.5

109.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI

S/N RATIO OB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

36. 0

60.0 70.0

6 12

1

16

500

43.0

N.M.

1.0

1-0

1.54

3

2

12

500

36. 5

60.0 70.0

8 10

2

18

500

42.5

N.M.

1.1

1.1

1. 54

3

2

10

500

36.5

60.0 70.0

10 12

2

1 10

500

43.5

N.M.

1.0

1.0

1.54

3

3

12

500

THIS HEARING AID HAS A SELECTABLE DIRECTION PATTERN

FOP THE MICROPHONE. CURVES WERE RUN IN THE OMNIDIRECTIONAL

POSITION AND IN THE DIRECTIONAL POSITION AT 0 AND 90 DEGREES,

DATA OTHER THAN CURVE WERE TAKEN WITH THE OMNIDIRECTIONAL

SETTING OF THE MICROPHONE.

132
133
FREQUENCY IN CYCLES PER SECOND

134
FREQUENCY IN CYCLES PER SECOND

I

135
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

136
137
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

138
DAHLBEPG EG

MODEL:HF-1250 T0NE:L MINtCCW) C:MIN(CCW) TUBING:! 7/16 BAT:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL Va CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX Dl

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

DA-160 DA-161 DA-162

HF-IZ-AB HF-14-AB HF-98-AA

MAR 16, 1973

66.5 67.0 67.5

74.0 73.5 74.5

128.5 127.5 128.5

62.0 60.0 62.5

60.0 70.0

4 11

4 5

2 4

4 11

700 500

60.0 70.0

4 17

4 8

1 5

4 17

700 500

60.0 70.0

12 9

4 9

1 5

12 9

500 700

45.5 46.0 48.0

N.M. N.M. N.M.

3.2 3.3 3.1

4.1 4.1 4.1

1.54 1.54 1.55

I 139
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

140
FREQUENCY IN CYCLES PER SECOND

I 141
DAHLBERG OE HIGH PASS

M0DEL:HQ-1244 COMP:0 TUBING:! 7/16 BATTERY:675

CODE

SERIAL #

DATE

DA-163

HQ-60-BW

DA-164

HQ-74-BW

APR 4» 1973

DA-165

HQ-75-BW

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 42.5

MPOt RANDOM NOISE

INPUT LEVEL, DB 78.0

OUTPUT LEVEL DB 113.5

42.0

77.0

114.5

41.0

78.0

114.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB R f PI 1 i 1 1 AO O f PI II 1 1 A 1 n ( p 1 II 1 \ HARMONIC DIST

SINPUT LEVEL DB 61.0 71.0 62.5 72.5 61. 5 71.

900 HZ % 0 2 1 3 I 1 1500 HZ % 0 2 0 2 0 2

2000 HZ % 0 2 0 1 1 3

MAX DIST % 1 4 1 4 1 6

FPEO OF MAX DI S 1870 1830 900 1820 1780 1840

S/N RATIO DB

IKHZ SIGNAL 39. 0 42. 5 40. 5

S/HUM PATIO DB

IKHZ SIGNAL N.M • N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 1. 2 1.3 1.2

65 DB INPUT 1, 2 1.3 1.2

BATTERY VOLTAGE 1 . 33 1.37 1.40

S/N 2KHZ 42. 5 45. 5 45.0

142
:^ 1

' <*' 1 1^ M

' " 1

' " '—

2"7^>B—1— '

i

. ! } » // J

-

i +j 1 ^—j 1

\ ^

_i_ . _^

: ^1

1

! 1

1 .

'

1 j

1 H

1 --^

:

; 'j i i

1 i -

, ,

.

•

1

,

i

i j

1

'

-'---l-r

1 1 T". IT 1 1. 1 ^ /-—

/

' /

<-

-

1 1 z ! 1/ i ,

-

; :0 J. _; -

i

t

1 -X^ u 1

i {

• ' ' n

J—^ J

J r J

1 J . —J .

—IB » t 1 ,|, !

1_. :

^ —M —::—-j- -n—

H—1+EAH L_

j — ^iG&l \ 9^

FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

143
FREQUENCY IN CYCLES PER SECOND

144
DAHLBERG OE

M0DEL:HS-1245 COMP:OFF(CW) TUBING:! 7/16 BATTERY:675

CODE DA- 166 DA— 167

SERIAL # HS-SZ-'AM HS-95-AM

DATE MAR 16, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 47.0 49. 0

MPO, RANDOM NOISE

INPUT LEVEL, DB 75. 0 75. 5

OUTPUT LEVEL DB 115. 0 115.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 47.01 FULL J 49. 0( FULL I HARMONIC DIST

3INPUT LEVEL DB 60.0 70.0 61.0 71.0

500 HZ % 2 10 3 6

700 HZ % 1 2 0 2

900 HZ Z 0 4 1 4

MAX DIST % 2 10 3 6

FREO OF MAX DI S 500 500 500 500

S/N RATIO DB

IKHZ SIGNAL 45.0 47. 0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 1.2 1. 1 65 DB INPUT 1.2 1.1

BATTERY VOLTAGE 1.33 1.31

DA-168

HS-96-AM

47.5

73.5

114.0

46. 0

60.0 70.0

2 5

0 3

1 3

? 5

500 500

43.5

N.M.

1.4

1.4

1.34

145
FREQUENCY IN CYCLES PER SECOND

146
FREQUENCY IN CYCLES PER SECOND

147
DAHLBERG OE

MODEL :HT-1233 L:CCW C:CCW TUBING:! 7/16 BATTERY:S76

CODE DA-169

SERIAL # HT-^l-AD

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 64.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 74.5

OUTPUT LEVEL DB 128.0

DA-170

HT-42-AD

APR 3, 1973

66. 5

76. 0

129.0

DA-171

HT-46-AD

63.6

77.5

128.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI S S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

56.5

60.0 70.0

5

114

3

4

2

12

500 1940

42.0

N.M.

3.2

4.0

1.55

57.0

60.0 70.0

5 12

1 6

2 6

5 15

500 2000

43.5

N.M.

3.3

4.4

1. 54

56. 0

60.0 70.0

3 4

1 3

0 2

5 5

580 610

44.0

N.M.

3.2

4.4

1.54

148
FREQUENCY IN CYCLES PER SECOND

149
FREQUENCY IN CYCLES PER SECOND

150
DAHLBERG EG

MODEL :JA-1254 TONE L'-CCW C:CW TUBING:l 7/16 BATTERY:S13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

DA-172

JA-60-'AR

DA-173

JA-66-AR

MAR 9, 1973

DA-174

JA-94-AR

44.0 47.0 43.0

77.0 76.0 77.5

117.0 118.0 117.0

44. 0( FULL

)

62.0 72.0

II 44

10 42

3 14

22 90

612 603

42.0

N.M.

1.2

1.2

1.54

47. 0( FULL ) 61.0 71.0

9 40

8 33

3 12

18 7 1 605 598

43. 5

N.M.

1.3

1.3

1.54

43.0(FULL)

64.0 74.0

10 35

6 27

3 10

15 60

608 608

42.0

N.M.

1.2

1.2

1.54

151
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

152
153
OAHLBERG BI

MODELajD- 1254BC COMPaOFF TONEaBROAD TUBINGai 7/16 BATT ERYaSl3 ( 2

)

CODE

SERIAL #

DATE

DA-175

JD-02-AG

DA-176

JD-03-AG

JUNE 8, 1973

DA-177

JD'04-AG

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 39.0

MPOt RANDOM NOISE

INPUT LEVEL, DB 78.5

OUTPUT LEVEL DB 114.5

47.0

73.0

116.5

46.0

72.0

116.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

39. 0( FULL ) 64.0 74.0

14 50

17 55

7 24

26 100

620 600

41.0

N.M.

1. 1 .3

1.1 .3

1.52 1.55

47.0(FULL)

6a.O 70,0

15 55

14 50

7 23

25 100

580 580

42.0

N.M.

1.3 .3

1.3 .3

1.56 1.55

46.0(FULL)

60.0 70.0

10 38

10 37

6 20

18 70

610 600

42. 5

N.M.

1.1 .3

1.1 .3

1.56 1.55

THIS HEARING AID HAS MICROPHONES AND AMPLIFIERS IN BOTH

TEMPLE PIECES, FEEDING ONE COMMON RECEIVER. THE DATA ABOVE

IS FOR THE UNIT ON THE SAME SIDE AS THE RECEIVER. THE BATTERY

DRAIN FOR BOTH SIDES IS RECORDED. THE DATA FOR THE FAR SIDE

OF ONE UNITARE GIVEN ON THE FOLLOWING PAGE.

154
DAHLBERG

CONTINUATION OF JD^1254BC

BI

CODE

SERIAL #

DATE

DA175A

JD-02-AG

JUNE 8, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 44.0

MPOt RANDOM NOISE

INPUT LEVEL, DB 74.5

OUT-^UT LEVEL DB 117.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

44.0(FULL)

61.0 71.0

13 48

16

7

26

600

41 .0

N.M.

. 3

.3

1.55

52

22

95

600

155

FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

157
DANAVOX

MODEL: 647 I CODE

SERIAL #

DATE

OB

GAIN LIMtMAX TONE:H EARPHONE :4I45-56-SM'N BATTERY:40l

DX-lOO

8N-100

DX-101

6N-331

MAR 19, 1973

DX-102

6N-350

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

48.0

73. 5

117.0

42.0

60.0 70.0

2 1 2 2

2 3

2 5

500 1590

40.0

N.M.

3.3

3.3

1.33

48.0

72.0

116,0

42.5

60,0 70,0

2 1

1 1

1 2

2 4

500 1580

42.0

N.M.

3.5

3. 5

1.35

46.0

74.0

117.0

42.0

60.0 70.0

2 2

2 2

2 3

3 6

1600 1600

39. 0

N.M.

3.3

3.3

1.38

158
FREQUENCY IN CYCLES PER SECONn

FREQUENCY IN CYCLES PER SECOND

159
160
DANAVOX OB

M0DEL:647-SMP TONE:H EARPHONE: 4645-51 B ATTERI E S : 401 ( 2

)

CODE DX-103 DX-104 DX-105

SERIAL # 2P''474 2P-626 lP-813

DATE MAR 19, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB f D« U

7 A C 1 H- . 5

MPO, RANDOM NOISE

INPUT LEVEL, DB 69.0 70.0 70.0

OUTPUT LEVEL DB 138.5 137. 5 138.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 65. 5 63.5 64.5

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0 60.0 70.0 60.0 70. 0

500 HZ % 10 14 9 16 9 15

700 HZ % 11 17 12 22 10 17

900 HZ % 6 10 10 16 6 10

MAX DIST % 11 17 9 21 9 15

FREO OF MAX DI S 700 700 500 800 500 780

S/N RATIO DB

IKHZ SIGNAL 42.5 42.5 40.0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 4.7 4.1 4.5 4.9 4.7 4. 3

65 OB INPUT 16.5 16.8 17.2 16.3 15.5 15. 0

BATTERY VOLTAGE 1.32 1.32 1.33 1.32 1.33 1. 3:

161
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

162
FREQUENCY IN CYCLES PER SECOND

163
DANAVOX

M0DEL:727PPX

OB

TONE:SEE BELOW EARPH0NE:4145-52 BATTERY:MN1500

CODE DX-106 DX-10 7 DX-108

SEPIAL # 03-105 03528 03602

DATE MAR 20, 1973

MEASUREMENTS WITH

Fill 1 vni rriMTRni

IKHZ GAIN DB 69.5 71.0 72.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 75.0 73.0 74.0

OUTPUT LEVEL DB 132.0 132.5 133.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 59. 5 61.5 63.5

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0 60.0 70.0 60.0 70.0

500 HZ % 19 23 4 11 6 12

700 HZ % 2 3 24 5 12 8 15

900 HZ % 20 19 5 14 6 14

MAX DIST % 23 24 5 15 9 15

FPEQ OF MAX DIS 700 700 900 1020 640 990

S/N RATIO DB

IKHZ SIGNAL 41.0 41. 5 42.5

S/HUM RATIO DB

1 K W 7 <s T CM A 1 M M M M MIN . Mn . BATTERY DRAIN, MA

M n T M D 1 1

INU 1 INrU 1 « nu • u 65 DB INPUT .0 .0 .0

BATTERY VOLTAGE .00 .00 .00

GAIN LIM:MAX TONE: H OaI: I THE CONSTRUCTION OF THE BATTERY COMPARTMENT MADE

IT IMPOSSIBLE TO MEASURE THE BATTERY DRAIN.

164
165
166

FIDELITY

M0DEL:F'11

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

900 HZ

1500 HZ

2000 HZ

MAX DIST

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

TONE:NONE TUBING:30MM

DB

%

%

FI-169

20485

56.0

75.0

122.0

52. 0

60.0 70.0

1 3

1 9

0 10

1 30

900 1600

44.5

N.M.

1.7

1.7

1.56

OE HIGH PASS

BATTERY: S76

FI-170 FI-171

20500 0699

MAR 21, 1973

58.0

76.0

121.5

49.0

60.0 70.0

1 1

1 8

2 14

4 18

2100 2120

40.5

N.M.

1.8

1. 8

1.56

51.0

80.0

121.0

51.0(FULL)

60.0 70.0

1 3

I 9

0 10

1 30

900 1600

42.0

N.M.

1.7

1.7

1.56

S/N 2KHZ 46. 5 45. 0 43.0

168
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

169
FREQUENCY IN CYCLES PER SECOND

170
FIDEL ITY

MODEL :F-39 T0NE:N

OE HIGH PASS

PC:T TUBING:30MM BATTERY:S76

CODE

SERIAL #

DATE

Fl-172

711734

FI-173 FI-174

711837 177944

APR 5, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 67.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 77.5

OUTPUT LEVEL DB 130.0

71.5

77.0

129.5

72.0

74.0

130.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

60.5

60.0 70.0

1 2

3 7

1 2

4 9

1070 1120

43.0

N- M.

5.2

5.6

1. 53

61.0

60.0 70.0

1 1 3 6

2 2

4 7

1110 1150

43.0

N.M.

4.9

5.3

1. 52

59.5

60.0 70.0

1 3

2 4

2 4

4 7

1090 1090

41.5

N.M.

2.7

2.9

1.55

S/N 2KHZ 35.5 35.5 34.0

THE GAIN HAD TO BE REDUCED ON FI-172 BEFORE BEGINNING

THE TEST TO PREVENT FEEDBACK.

THE HIGH PASS DESIGNATION IS THAT GIVEN BY THE MANUFACTURER.

171
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

172
FREQUENCY IN CYCLES PER SECOND

173
FIDELITY OE HIGH PASS

M00EL:F-173 T0NE:N0NE TUBING:30MM BATTERY:675

CODE FI-175 FI-176 FI-177

SERIAL # 8830 9020 91A0

DATE MAR 22, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 38. 5 38. 0 39.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 83.0 83. 0 83.0

OUTPUT LEVEL DB 114.0 113. 0 113.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 38. 5( FULL

)

38. 0( FULL

)

39. 5 ( FUl

HARMONIC DIST

aiNPUT LEVEL DB 70.0 80.0 68.5 78 .

67.5 77.5

900 HZ % 3 8 1 5 3 10

ISGO HZ % 2 6 1 4 3 12

2000 HZ % 1 4 1 4 2 5

MAX DIST % 3 8 1 5 3 12

FREO OF MAX DIS 500 500 900 500 700 700

S/N RATIO DB

IKHZ SIGNAL 51.0 49. 5 48. 5

S/HUM RATIO DB

IKHZ SIGNAL N. M. N M. N.M

BATTERY DRAIN, MA

NO INPUT .0 .0 .6

65 DB INPUT • 0 .0 • 6

BATTERY VOLTAGE .00 .00 1.40

S/N 2KHZ 55.0 53.0 51.5

THE BATTERY DRAIN WAS OBTAINED FOR ONLY ONE INSTRUMENT,

AS IT WAS NECESSARY TO BREAK THE BATTERY HOLDER.

174
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

175
FREQUENCY IN CYCLES PER SECOND

176
FIDELITY OB HIGH PASS

M0DEL:F-360 T0NE:N EARPH0NE:PP BATTERY:401

CGDE F 1-178

SERIAL * 330051

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 81,0

MPO, RANDOM NOISE

INPUT LEVEL, DB 72.0

OUTPUT LEVEL DB 138.0

FI-179

330245

MAR 8, 1973

82.0

75.0

138.5

FI-180

330843

82.5

75.0

139.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

69.5

60.0 70.0

0 2

0 1

1 2

2 4

1180 2290

57.0

N.M.

4,1

13.6

1.33

70.0

60.0 70.0

0 2

0 1 1 2

2 5

1100 1120

57.5

N.M.

4.3

13.4

1.35

72.0

60.0 70.0

1 1 0 1 1 3

4 9

1120 1140

59.0

N.M.

4.3

13.5

1.36

S/N 2KHZ 45.0 45. 5 57. 5

177
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

]78
FREQUENCY IN CYCLES PER SECOND

179
FIDELITY OB

M0DEL:F-364 T0NE:SEE BELOW EARPHONE:? BATTERY:40I

CODE FI-18I FI-182 FI-183

SERIAL # 330735 330837 330931

DATE APR 6, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 73.5 74*5 73 0

MPO, RANDOM NOISE

INPUT LEVELt DB 70.5 71.0 64.0

OUTPUT LEVEL DB 132.0 133.0 132.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 60.0 61.0 59. 5

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0 60.0 70.0 60.0 70.0

500 HZ % 5 5 3 9 5 6

700 HZ % 5 7 4 6 5 4

900 HZ % 5 8 3 3 4 4

MAX DIST % 6 8 5 10 6 5

FREQ OF MAX DIS 810 810 790 550 760 790

S/N RATIO DB

IKHZ SIGNAL 41.0 37.5 40.5

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M.

BATTERY DRAINt MA

NO INPUT 6.6 7.5 6.7

65 DB INPUT 13. 5 15..0 14.0

BATTERY VOLTAGE 1.31 1.35 1.35

V0LT:1.5 TONE SW:N PC:0 COMP:OFF TONE:L

180
181


FIDELITY IE HIGH PASS

M0DEL:F652 TONE:NONE BATTERY:S312

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

FI-184

801468

22.0

79.0

97.5

FI-185

801620

MAY 31, 1973

29.0

80. 0

100.0

FI-186

802155

30.5

80.0

95.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

22. 0( FULL

)

66.0 76.0

8 7

0 0

0 0

8 7

900 900

23.0

N.M.

.0

• 0

.00

25.0

60.0 70.0

8 20

5 9

0 0

8 20

500 500

29.5

N.M.

.0

. 0

.00

20.0

60.0 70.0

5 9

2 4

0 0

5 9

500 500

25.5

N.M.

.0

.0

.00

S/N 2KHZ 36.5 40.5 37.5

THE BATTERY DRAIN COULD NOT BE MEASURED BECAUSE

OF THE DESIGN OF THE BATTERY COMPARTMENT.

184
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

185
FREQUENCY IN CYCLES PER SECOND

186
LEHR OB

M0DEL:112 G:F P:F TONE:L EAR PHOME : 4620-5 1 BATTER I E S : 401 ( 2

)

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 OB INPUT

BATTERY VOLTAGE

LE-06I LE-062 LE-063

2311201 2311257 2311316

FEB 7, 1973

82.5

64.0

138.0

85.5

62.0

138. 5

85.5

64.0

139.5

68.0

60.0 70,0

8 17

8 16

2 2

13 23

610 610

42.5

N.M.

7.5 7.3

14.0 14.0

1.38 1.38

69.0

60.0 70.0

5 13

2 7

1 1 5 15

500 610

45.0

N.M.

6.2 6.2

18.5 19.0

1.30 1.30

71.0

60.0 70.0

30 36

20 22

7 5

35 41

600 620

48.0

N.M.

6.3 6.4

20.0 21.0

1.39 1.36

187
1 88


LEHR OE

M0DEL:*6 T0NE:N0NE TUBING:! 1/4 BATTERY:675

CODE

SERIAL #

DATE

LE-064

2300571

LE-065

2300599

MAR 5, 1973

LE-066

2300603

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 54.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 78.0

OUTPUT LEVEL DB 122.0

57. 0

70.0

122.0

54.5

73.0

121.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

48.0

60.0 70.0

1 7

12

17

1962 1961

42.5

N.M.

1-9

1.9

1.33

49. 5 60.0 70.0

2 9

1 1

1 2

4 23

1962 1959

40.5

N.M.

1.8

1.8

1.36

48. 5 60.0 70.0

1 9

1 1

1 2

1 14

1944 1944

41.0

N.M.

1.8

1.8

1.35

191



LEHR OE

M0DEL:*6F PC:CW TUBING:l 1/4 BATTERY:675

CODE

SERIAL #

DATE

LE-067

2323637

LE-068

2324101

MAR 5, 1973

LE-069

2324465

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 61.0

MPO, RANDOM NQISE

INPUT LEVEL, DB ' 75.0

OUTPUT LEVEL OB 128.0

60. 0

75.0

128.0

61.5

75.0

129.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

54.0

60.0 70.0

3 5

1 2

1 3

5 6

1313 1261

42.0

N.M.

2.8

3.6

1 .33

53. 0

60.0 70.0

3 5

1 1 1 2

3 6

1633 1900

41.0

N.M.

2. 8

3.5

1. 33

55.5

60.0 70.0

3 2

1 2

1 3

5 4

1457 1217

41.5

N.M.

2.8

3.7

1.34

195
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

196
FREQUENCY IN CYCLES PER SECOND

197
M0DEL:6L-AVC A:CCW TUBING:! 1/4 BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

. 700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI S S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

LE-070 LE-07I LE^072

2324913 2324932 2325010

MAR 20, 1973

32.5

81.0

112.5

32.5

81^0

112.0

32.5

81.0

111.5

32.5(FULL

}

64.0 74.0

2 2

0 0

0 1 2 11

500 1930

39.0

N.M.

.9

.9

1.38

32. 5( FULL)

63.0 73.0

3 2

0 1 0 1 7 14

1530 1590

39.0

N.M.

1.1

1. 1 1.35

32.5(FULL)

63.0 73.0

4 2

0 0

1 1 5 7

1580 1570

39.0

N.M.

.9

.9

1.38

198
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

199
FREQUENCY IN CYCLES PER SECON

200
LEHR OE

M00EL:*6S TONE:NONE TUBING:! 1/4 BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FPEO OF MAX 01

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

DB

%

%

%

%

DB

MA

LE-073

2280323

40.0

85.0

121.0

40. 0( FULL

)

68.0 78.0

3 12

1 2

1 5

3 14

500 1550

41.5

N.M.

1.6

1.6

1.35

LE-074

2280337

MAR 6, 1973

40.5

83.0

121.5

40. 5( FULL)

69.0 79.0

3 10

14

20

500 1900

42.0

N.M.

1.5

1.5

1.35

LE-075

2280341

42.0

84.0

121.5

42.0(FULL)

67.0 77.0

4 14

1

14

2

4

19

500 1560

42.0

N.M.

1.8

1.8

1.37

201
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

202
203
LEHR OB

M0DEL:111F GC:FULL PC:FULL T0NE:N EARPH0NE:51 BATTERY:401

CODE LE-076

SERIAL # 2323026

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN OB 77.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 73.0

OUTPUT LEVEL DB 135.0

LE-077

2323073

APR 5, 1973

80.0

67.0

134.0

LE-078

2323133

78.0

72.0

134.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

64.5

60.0 70.0

15 26

9

3

20

600

46.0

N.M.

5. 3

11.4

1.37

18

7

28

620

64.5

60.0 70.0

16 21

16 23

5 10

26 36

620 620

47.0

N.M.

5.8

11.0

1.38

63.5

60.0 70.0

10 18

8 13

3 6

10 19

500 500

45.0

N.M.

5.4

11.6

1.40

204
205
206

NORELCO OE

M0DEL:KL6730 TONExN N TONE TUBE TUBING: 1 BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL OB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

NO-103

095696

66.0

102.0

128.5

66. O(FULL)

60.0 70.0

5

1

4

9

10

4

4

34

1830 1241

52.5

N.M.

2. 5

3.2

1 .29

NO-104

096147

MAR 12, 1973

65. 5

78.0

128.5

65.5(FULL ) 60.5 70.5

3 6

2

14

4

1 19

1211 1244

54.5

N.M.

2.3

3. 1 1.33

NO-105

096203

65.0

77.0

129.0

65.0(FULL)

60.0 70.0

4 13

12

20

1245 1211

54.5

N.M.

2.5

3.3

1.32

208
FREQUENCY IN CYCLES PER SECOND

209
FREQUENCY IN CYCLES PER SECOND

210
NORELCO OB

MOOEL:HP8122 PC:5 GAIN:0 TONE:N EARPHONE:PHP BATTERY:

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

NO-106 N0-I07 NO-108

019662 020464 020920

MAR 23, 1973

78,0

76. 5

141.0

76. 0

74.5

138.0

80.0

77.0

139.0

72.0

60.0 70.0

11 17

8 10

2 4

16 30

580 580

48.5

N.M.

5.6

18.0

1. 55

64.0

60.0 70.0

14 13

10 11

4 4

28 24

610 600

50.0

N.M.

5.9

22.0

1. 55

67.0

60.0 70.0

9 13

6 10

1 3

19 24

60 0 610

50.0

N.M.

5. 5

19.0

1.55

211
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

212
FREQUENCY IN CYCLES PER SECOND

213
NORELCO QB

M0DEL:HP8123 PC : 5 GAIN:0 TONE:N EARPHONE: PH77 BATTERY:1015

CODE NO-109

SERIAL # 040019

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 56.5

MPOt RANDOM NOISE

INPUT LEVEL, DB 77.5

OUTPUT LEVEL DB 125.0

N0--1I0

040054

MAR 23, 1973

61. 0

78.5

127.0

NO-111

040265

61.5

78.5

127.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

49. 5

60.0 70.0

4 10

12

10

1880

6

7

10

500

38. 5

N.M.

5.0

14.5

1.55

54.5

60 70.0

4

2

5

8

1300 1290

43. 0

N.M.

5.0

17.0

1. 55

53.5

60.0 70.0

3 5

13

4

1110 1290

45.5

N.M.

5.9

17.0

1.55

214
215


NORELCO OE HIGH PASS

M0DEL:HP8249 PC : 5 VTC:CW TUBE:N TUBING:! BATTERY:675

CODE NO-112

SERIAL # 073419

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 49.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 79.5

OUTPUT LEVEL DB 118.0

NO-113 NO-114

073444 073470

MAR 22, 1973

52. 5

78. 0

118.0

54.0

79.5

118.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

900 HZ

1500 HZ

2000 HZ

MAX DIST

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 OB INPUT

BATTERY VOLTAGE

DB

%

%

%

%

DB

MA

39.0

60.0 70.0

4 3

2 13

1 5 4 36

900 1710

42.0

N.M.

2.1

2. 1 1.35

41.0

60.0 70.0

3 2

2 11

2 9

4 40

900 1730

42. 0

N.M .

1.9

1.9

1.33

39.0

60.0 70.0

4 3

2 14

2 12

4 36

900 1750

41.0

N.M.

2.1

2.1

1.38

218
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

219
FREQUENCY IN CYCLES PER SECOND

220
NORELCO OE

MODEL:HP8258 TONE:N AMG:CW TUBING:l BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

NO- 11

5

063499

59.0

76.0

119.0

NO-116 NO-117

063532 063566

MAR 13, 1973

59. 5

74.0

119.0

57.0

76.0

119.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

DB

%

%

%

%

DB

MA

47.0

60.0 70.0

3 13

0 5

0 5

6 60

1677 1739

41.0

N.M.

,7

.7

1.37

47.5

60.0 70.0

1 8

0 5

0 2

17 76

1707 1732

42.0

N.M.

.7

.7

1.35

46.5

60.0 70.0

3 13

1 5

0 4

3 53

500 1725

41.5

N.M.

.7

.7

1.38

221

FREQUENCY IN CYCLES PER SECOND

223
NORELCO OE

M0D6L:HP8273 PC:5 TONE:N TUBE:N TUBING.'l BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

N0-1I8

062718

61.5

77.5

122.0

48.5

60.0 70.0

2 10

1 3

0 4

4 25

2110 2110

40.0

N.M.

2.1

2. 1 1.35

NO-119

062727

MAR 22, 1973

61.0

80.0

122.0

NO- 120

063207

48.0

60.0 70.0

3 15

I 4

1 8

5 33

2110 2110

40.0

N.M.

2.0

1.9

1.36

62.5

77.0

123.0

47.5

60.0 70.0

2 8

1 2

0 3

4 20

2130 2130

40.0

N.M*

2.2

2.0

1.38

224
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

225
FREQUENCY IN CYCLES PER SECOND

226
NORELCO OB

M0DEL:HP8126 PC : 5 GAIN:0 TONE:N EARPHONE : PH-77 BATTERY:1015

CODE

SERIAL #

DATE

NO-121

057119

NO-122

057196

MAR 21, 1973

NO-123

057163

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 70.5

MPOt RANDOM NOISE

INPUT LEVEL, DB 66.5

OUTPUT LEVEL OB 130.0

68.5

76. 0

130. 0

71.0

74.5

130.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

SINPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

56.5

60.0 70.0

3 4

0 2

3 4

4 7

1070 1250

42.5

N.M.

6.0

18.0

1.52

58.5

60.0 70.0

3 5

2 4

5 6

5 7

960 1320

37. 5

N.M.

7.0

20.0

1.55

59.0

60.0 70.0

3

14

4

880

44. 5

N.M.

7.0

19.0

1.55

5

4

4

5

980

227

229
230
OTARION EG

M0DEL:X-109 T0NE:CCW TU8ING:2 1/4 BATTERY:S76

CODE

SERIAL #

DATE

nA-23S

400992

OA-239

401000

MAR 26, 1973

OA -240

401004

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 59.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 77.0

OUTPUT LEVEL DB 126.0

61.0

78.0

128.0

56.0

79.5

128.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

54.0

60.0 70.0

2 6

0 2

0 1

2 9

500 1220

38.5

N.M.

1.0

2.4

1.55

56. 0

60.0 70.0

5 11

2

3

12

500 1240

39.0

N.M.

1.0

3.0

1. 55

52.5

60.0 70.0

2 8

1 2 0 2 8 25

630 640

34.0

N.M.

1.5

3.5

1.54

THE BATTERY DRAIN IS APPROXIMATE ONLY, AS THE AID OSCILLATED

WHEN THE LOWEST AMMETER RANGE WAS USED.

231
232
FREQUENCY IN CYCLES PER SECOND

I 233
OTAPION QE

M0DEL:C0MPETTE TONExNONE TUBINGU 1/2 BATTERY:S13

CODE OA-241 OA-242 OA-243

SERIAL # 41661 41682 41709

DATE MAR 26, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB t o . u MPOt RANDOM NOISE

INPUT LEVEL, DB 81.0 82.0 80.0

OUTPUT LEVEL DB 107.0 104.0 104. 5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 38. 0 34.5 34.5

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0 60.0 70 .0 60.0 70.0

500 HZ % 11 7 14 8 12 7

700 HZ % 2 1 2 1 1 1 900 HZ % 1 1 1 1 1 1

MAX DIST % 11 7 14 8 12 7

FPEO OF MAX DIS 500 500 500 500 500 500

S/N RATIO DB

IKHZ SIGNAL 45.0 48.5 48.0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 1.0 1.1 1.0

65 DB INPUT 1.0 1.1 1.0

BATTERY VOLTAGE 1.54 1. 55 1.54

234
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

235
FREQUENCY IN CYCLES PER SECOND

236
OTARION IE

M0DEL:LISTENETTE T0NE:N0NE BATTERY:S13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

OA-244

A-3640

27.5

86.5

98.0

OA-245

R'3888

MAY 22, 1973

34. 0

81.5

99.0

OA-246

R-3967

27. 0

80.0

105.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

DB

%

DB

MA

27.5(FULL)

66.5 76.5

5 6

2 5

5 10

5 10

900 900

31.5

N.M.

.8

. 8

1. 53

34.0(FULL)

63.0 73.0

5 4

1

3

5

500

37.0

N.M.

.8

.8

1. 55

3

5

5

9 20

27.0(FULL

61.5 71.5

3 0 10

10

30

10

45

60 125

1000 990

27.5

N.M.

.9

.9

1.54

I 237
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

238
FREQUENCY IN CYCLES PER SECOND

239
OTARION OE

MODELCTONETTE TONE:NQNE TUBING:! 1/2 BATTERY:S13

CODE OA'247

SERIAL # 41530

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 48«0

MPO, RANDOM NOISE

INPUT LEVEL, DB 80.0

OUTPUT LEVEL DB 117.5

0A~248

41577

APR 23, 1973

51. 0

81. 5

119.0

OA-249

41588

48.0

81.0

118.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

48.0(FULL}

60.0 70.0

4 17

1

14

500

49.0

N.M.

1.0

1.0

1.54

5

3

17

500

51.0(FULL)

60.0 70.0

5 28

2

0

5

9

3

28

500 500

47.5

N.M.

1.1

1. 1 1. 55

48. 0( FULL)

60.0 70.0

3 19

6

3

19

500 500

48.0

N.M.

1.0

1.0

1.55

240
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

241
FREQUENCY IN CYCLES PER SECOND

242
TICON OB

M0DEL:375PPX TONE:H EARPHONE: C FD-8 BATT ER Y : RM 502H

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

01-142 01-143 01-144

107691 104857 108031

MAR 28, 1973

71.0

79,0

130. 5

71. 5 82.0

131.0

72.5

80.0

132. 5

59. 5

60.0 70.0

2 2

2 3

2 4

2 4

500 1020

39. 5

N.M.

3.6

16.5

1.46

60.5

60.0 70.0

1 3

2 4

2 5

2 4

730 650

40.0

N.M.

4.2

16.0

1.45

62.0

60.0 70.0

2 4

3 4

1 3

3 4

700 670

40.0

N.M.

3.3

17.5

1.46

243

245
246
OTICON OB

M00EL:375PPZ TONEtH EAR PHONE : C FD-5 BATT ER Y : RM 50 2H

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FR EQ OF MAX DI S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

01-145 01-146 01-147

113697 115573 115759

MAR 28, 1973

63.0 63. 0 64. 0

73.0

123.0

77.0

123.0

79.5

122. 5

54.0 53.5 53.0

60.0 70.0

2 2

1 2

1 5

2 3

880 860

60.0 70.0

1 2

1 2

1 4

2 4

1330 1300

60.0 70.0

1 1 1 3

1 3

1 4

870 850

39.5 39.5 39.5

N.M. N.M. N.M.

2.9 3.5 4.1

13.0 13.9 13.0

1.45 1.46 1.47

247

249

OTICON

MODEL :380~SI

OB

TONE:IMONE EAR PHON E: AFE-8 B AT T EP Y : RM 502H

CODE

SERIAL #

DATE

01-148

121744

01-149

122089

MAR 29, 1973

01-150

122156

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 56.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 77.0

OUTPUT LEVEL OB 120.0

57. 0

77. 0

120.0

58. 0

79.5

120.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

50. 5 60.0 70.0

7 14

3 12

4 L6

14 20

1560 1060

50.0

N.M.

1.7

1.7

1.48

51. 0

60.0 70.0

7 16

3 13

6 15

10 21

1590 1060

50.0

N.M.

1.4

1.4

1.49

52.0

60.0 70.0

7 15

3

4

12

1550

11

13

15

500

49.5

N.M.

1.7

1.7

1.48

251
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

252
FREQUENCY IN CYCLES PER SECOND

253
OTICON OE

M0DEL:565SZ TONEtNONE TUBING:!" BATTERY:675

CODE

SERIAL #

DATE

01-151

777045

01-152

777063

MAR 23, 1973

01-153

777076

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 53.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 81.5

OUTPUT LEVEL DB 120.5

52.0

82.5

120.5

52.0

81.0

120.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ Z

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

53.0(FULL

)

61.0 71.0

8

3

5

23

500 1540

46. 5

N.M.

1.7

1.7

1.40

52. 0( FULL }

61 71.5

9

2

2

24

5U0 1550

47. 0

N.M.

1.8

1.8

1.39

52. 0( FULL)

61.0 71.0

7 16

117

500

46.0

N.M.

1.4

1.4

1.40

40

3

16

500

254
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

255
FREQUENCY IN CYCLES PER SECOND

256
OTICON OE

M0DEL:568-SX T0NE:N0NE TUBING: 1»» BATTERY:675

CODE

SERIAL it DATE

01-154

785075

1-155

785094

MAR 30» 1973

01-156

785109

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 51.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 79.0

OUTPUT LEVEL DB 118.0

48.5

80.0

118. 5

54.5

80.5

119.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

51.0(FULL}

60.0 70.0

4 4

10

4

500

45.5

N.M.

1.4

1.4

1.37

2

15

980

48.5(FULL)

62 72.0

4

2

1 10

500 1770

45.5

N.M.

1.3

1.3

1.38

51.0

60.0 70.0

3 4

1 0

0 1 3 S

^00 9 70

43.5

N.M.

1.4

1.4

1.40

257
258
FREQUENCY IN CYCLES PER SECOND

259
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

260
OTICON OE

M0DEL:591SZ OT:T TUBING: 1»» BATTERY:RM13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

SINPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

01-157

77180

DB

%

%

%

%

DB

MA

46.5

80.5

119.0

46. 5(FULL

)

60.0 70.0

2 4

0 1 0 3

? 3S

BOO 1640

43.5

N.M.

1.6

1.6

1.33

01-158

779083

MAR 26, 1973

46.0

81.0

120.0

01-159

779138

46. 0( FULL)

61.5 71.5

2 2

1 1

1 2

2 19

500 1660

42. 5

N.M.

1.6

1.6

1.33

45.0

81.0

120.0

45.0(FULL)

63.0 73.0

1 2

0 1 1 2

1 36

500 1650

40. 5

N.M.

1.6

1.6

1.34

I

261
262
FREQUENCY IN CYCLES PER SECOND

263
OTICON

MODEL : 565-SZ-LDC

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN

HARMONIC DIST

aiNDUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FREO OF MAX

S/N RATIO

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

OE

N/H:H 0UT:MAX TUBING:i»« BATTERY:675

01-160

778523

45. 5 71.0

107.0

01-161 01-162

787623 787643

APR 3, 1973

45. 5 72.0

106. 0

43.5

70.0

105.5

DB 33.5 33. 0 31.5

DB 60.0 70 .0 60.0 70 .0 60.0 70.0

% 4 3 4 3 4 2

% 1 1 I 1 1 1 % 0 1 1 1 1 1 % 4 3 4 3 4 2

DI S 500 500 500 500 500 500

DB

38.5 39. 5 38. 5

DB

N.M. N.M. N.M.

MA

1.8 1.6 1.6

1.8 1.6 1.6

1.35 1.37 1.35

264
265
266
QUALITONE CR

MODEL:SNEC TONE:N TUBING:! 1/2 BATTERY:S76

CODE

SERIAL #

PATE

QU-196

2182

QU-197

2183

APR 17t 1973

QU-198

2184

MEASUREMENTS WITH

FULL VOL CONTROL

\KHZ GAIN DB 40.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 82.0

OUTPUT LEVEL DB 118.0

42. 0

83. 0

118.0

45.0

33.0

119.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 40.0(FULL) 42.0(FULL) 45.0(FULL)

HARMONIC DIST

aiNPUT LEVEL DB 66.0 76.0 64.5 74.5 63.0 73.0

500 HZ % 3 8 4 10 3 6

700 HZ % 1 5 1 7 1 3

900 HZ % 1 1 0 3 1 1 MAX DIST % 4 14 5 15 4 9

FREO OF MAX DI S 570 580 570 590 570 570

S/N RATIO OB

IKHZ SIGNAL 41.0 41. 0 43. 0

S/HUM PATIO DB

IKHZ SIGNAL N.M. N.M • N.M.

BATTERY DRAIN, MA

NO INPUT 1.7 1. 7 1.8

65 DB INPUT 1.7 1. 7 1.8

BATTERY VOLTAGE 1. 55 1. 55 1.54

267
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

268
FREQUENCY IN CYCLES PER SECOND

269
QUALITONE OE

MODELtSSD T0NE:N TUBING:! 1/2 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

S/N 2KHZ

QU-199 QU'-200 QU-201

14474 14475 14478

APR 9, 1973

50.0

80.0

121.0

53. 0

81. 0

121.0

49.0

80.5

120.0

50.0(FULL) 53.0(FULL) 49.0(FULL)

61.0 71.0

0 1 2 4

0 4

2 16

1480 1840

61.5 71.5

0 0

1 11

0 2

3 15

1350 1810

63.0 73.0

0 1

1 11

0 1

1 14

1500 1820

46.0 51.5 46.5

N.M. N.M. N.M.

2.2 2.0 2.2

2.2 2.0 2.2

1.55 1.55 1.56

51.5 52.5 46.0

270
271
FREQUENCY IN CYCLES PER SECOND

272
OUALITONE OE

M0DEL:SWH T0NE:N0NE TUBING: 13/4 BATTERY:S76

CODE

SERIAL #

DATE

^*EASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN OB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN OB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S

S/N RATIO OB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

QU-202 QU-203 QU-204

25526 25528 25529

APR 9, 1973

49.5 48.5 49.0

80-0 80.5 81.0

120.0 119.5 120.0

49.5{FULL

J

61.0 71.0

4 3

1 2

1 1 4 9

500 1660

46. 5

N.M.

2.2

2.2

1.56

48. 5( FULL ) 62.5 72.5

3 3

1 1 0 1 3 15

500 1720

45. 5

N.M.

2.3

2.3

1.55

49.0(FULL)

62.0 72.0

4 4

1 1 0 1 4 13

500 1760

46.0

N.M.

2.2

2.2

1.55

273
PRPOIlFNr.Y IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

274
FREQUENCY IN CYCLES PER SECOND

275
OUALITONE Qi MODELrTSNEB TONE:N TUBING:l 1/2 BATTERY:S76

CODE OU-205 OU-206 QU-207

SERIAL # 2185 2186 2187

DATE APR 16, 1973

^«EASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 44, 0 /. Q n H- D m V

MPO, RANDOM NOISE

INPUT LEVEL, DB 83. 5 84.0 . 83.0

OUTPUT LEVEL DB 119.5 119.0 118.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 44.0(FULL

)

41.0(FULL) 43<0(FULL) HARMONIC DIST

SINPUT LEVEL DB 65.0 75.0 67.0 77.0 65.0 75.0

500 HZ % 4 11 3 8 2 4

700 HZ % 2 8 1 5 I 3

900 HZ % 1 6 1 4 0 5

MAX DIST % 5 16 4 10 2 5 FREO OF MAX DI

570 590 570 570 570 570

S/N RATIO DB

IKHZ SIGNAL 42.5 41. 5 40. 5

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M. nATTCDV DMIItKT nOATM HilA UKAliNt MA

NO INPUT 2.0 1.7 1.9

65 DB INPUT 2.0 1.7 1,9 BATTERY VOLTAGE 1.55 1.55 1.55

276
FREQUENCY IN CYCLES PER SECOND

277
FREQUENCY IN CYCLES PER SECOND

278
OUALITONE OE

M0DEL:TSP TONE:NoNE TUBING: 1 3/4 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

QU-208

15998

57.0

81.0

130.0

57. 0(FULL

)

63.0 73.0

1860 1820

45.0

N.M.

1.0

2.9

1. 55

QU-209

16190

APR 9, 1973

59. 0

80.0

129.5

QU^210

16250

59. 0( FULL

)

61.0 71.0

5 6

2 2

1 1 5 8

500 1690

46. 5

N.M.

1.3

2.8

1. 55

58. 5

80.0

129. 5

58.5(FULL)

61.5 71.5

4 2

500 1100

45.5

N.M.

.8

2.7

1.55

279
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

280
FREQUENCY IN CYCLES PER SECOND

281
OUALITONE EG

MODEL:TSPN TONE SC: IN N TUBING:! 1/2 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

QU-211 QU-212 QU-213

1711 1720 1726

APR 10, 1973

62.0

80.0

130.0

64. 0

79.5

130. 5

63.0

78.0

130. 0

62.0(FULL)

60.0 70.0

12 12

7 12

4 6

14 14

580 790

47.0

N.M.

.8

3.2

1. 56

63.0

60.0 70.0

11 23

5 10

3 6

10 31

500 560

47.5

N.M.

1. 1 3.5

1. 56

61.5

60.0 70.0

4 14

3 13

2 4

4 14

620 500

43.5

N.M .

.9

3.8

1.55

282
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

283
FREQUENCY IN CYCLES PER SECOND

284
QUALITONE CR

M0DEL:TSPNC TONE SC:IN SW:N TUBING:l 1/2 BATTERY:S76

CODE

SERIAL #

DATE

QU-214

1743

QU-215 QU-216

1744 1745

APR 16, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB OZJ • Z) AAOH . nU A R O

MPO, RANDOM NOISE

INPUT LEVEL, OB 77 R 77 R 7R R OUTPUT LEVEL DB 1 1 n 11

"^n 0\J» n\J MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB o ^ • u A 1 R AO O

HARMONIC DIST

aiNPUT LEVEL DB OU«VJ f\J«U AO O 70 O AO O 70 O

500 HZ % Q 7 1 O ft

J. u o 11 ft 700 HZ % A ft A A O i 1 900 HZ %

MAX DIST % 9 10 12 8 11 12

FREQ OF MAX DI S 500 560 550 500 560 550

S/N RATIO DB

IKHZ SIGNAL 46.5 46.0 47.0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 1.0 . 8 1.0

65 DB INPUT 3.4 3.5 3.8

BATTERY VOLTAGE 1.54 1. 54 1.54

285
286
FREQUENCY IN CYCLES PER SECOND

287
RADIOEAR

M0DEL:930 1 ,2,LF SCRS:IN TUBINGU.S'* BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, OB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

RA-199 RA-200 RA-201

9Y-425 9Y-834 9Y-843

APR 12, 1973

61.0 63.0 65.5

79.5 76.5 80.0

124.5 124.5 126.0

56.0

60.0 70.0

13 39

5 17

4 9

16 37

1800 1700

56.5

60.0 70.0

9 29

4 13

2 6

11 36

1810 1770

58.5

60.0 70.0

15 52

9 26

4 9

15 52

500 500

50.0

N.M.

2.1

2.2

1.54

51.5

N.M.

1.8

1.9

1. 55

54.0

N.M.

2.0

1.2

1.54

288
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

289
FREQUENCY IN CYCLES PER SECOND

290

{
RADIOEAR OB

M00EL:980A T0NE:SEE BELOW EARPH0NE:M98 BATT ERY :TR 132

CODE

SERIAL #

DATE

RA-202

492-'H2

RA-203

^92-K8

APR 17, 1973

RA-204

492-LO

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 64.0

MPOt RANDOM NOISE

INPUT LEVEL* DB 80.5

OUTPUT LEVEL DB 139.5

68. 0

81.0

141. 0

59.0

80.0

140.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

S)INPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N PATIO OB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

64.0(FULL)

63.0 73.0

41 22

25 18

26 21

41 32

500 1170

36. 5

N.M.

6.7

13. 5

2.62

68. 0( FULL ) 61.0 71.0

7 17

4 1

3 5

7 17

500 500

37.5

N.M.

7.0

15. 0

2.57

59. 0( FULL

)

62.0 72.0

8 60

9

17

16

870

36.0

N.M.

7.3

15.5

2.58

94

47

97

730

SCREWS 1,2,3,4,5,8, IN

291

FREQUENCY IN CYCLES PER SECOND

293
PADIOEAR OE

MODELtlOOO GAIN:GRN DOT RESPtWHTDOT TUBING:15/32 BATTERY:S41

CODE RA-205

SERIAL # MFF-647

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 44.5

MPO, RANDOM NOISE

INPUT LEVELt DB 81.5

OUTPUT LEVEL DB 119.0

RA-206

MFL-816

APR 10, 1973

46.0

81.0

119.0

RA-207

MFV-553

43.5

83.5

119.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

44. 5( FULL ) 64.0 74.0

4 10

1

14

2

4

12

500 1300

45.0

N.M.

1.6

1.6

1.55

46. 0( FULL)

64.0 74.0

4 10

1

14

2

4

9

500 1320

43.0

N.M.

1.4

1.4

1.55

43.5{FULL)

65.0 75.0

10

3

3

12

500 1670

45.0

N.M.

1.4

1.4

1.56

294
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

295
FREQUENCY IN CYCLES PER SECOND

296
RAOIOEAR EG

MODEL:1010 LF:DOT GAIN SC:OUT TUBING:!. 3* • BATTERY:S41

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

RA-208 RA-209 RA-2I0

ZH-25I ZX-869 ZX-893

APR 12, 1973

52.0

8 1.0

121.0

48.0

80.0

120.0

47.5

82.0

120.5

52.0(FULL)

60.5 70.5

7 16

2 11

1 5

7 22

500 1570

47.5

N.M.

1.8

1.8

1.55

48. 0( FULL } 62.5 72.5

7 22

3 13

2 8

7 34

530 1590

47.0

N.M.

1.4

1.4

1.56

47.5(FULL)

62.5 72.5

6 15

2 11

1 5

6 21

530 1620

46.0

N.M.

1.7

1.7

1.54

297
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

298
FREQUENCY IN CYCLES PER SECOND

299
RADIOEAR CR HIGH PASS

MODELUOIO CROS GAIN SC:OUT RESPtLF DOT TUBING:!. 3* • BATTERY:S^1

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVELt DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

S/N 2KHZ

RA-211 RA-212 RA-213

ZH-034 XH-856 APR ZX-094

16t 1973

49.5

82.5

120.0

52.0

82.5

121.0

51.0

82.5

120.5

49. 5(FULL) 52.0(FULL) 51.0(FULL)

61.5 71.5

1 2

2 10

0 3

2 19

1500 1830

47.0

N.M.

1.8

1.8

1.53

61.0 71.0

1 3

2 23

1 3

2 23

1500 1500

48.0

N.M.

1.7

1.7

1.55

62.5 72.5

1 5

2 27

1 3

2 27

1500 1500

48. 5

N.M.

1.8

1.8

1.54

47.5 47.0 47.0

300
FREQUENCY IN CYCLES PER SECOND

301
FREQUENCY IN CYCLES PER SECOND

302
RADIOEAR OE

MODEL:1020 GA IN , LF , LF 2 , SCRS : I N TUBING:15/32 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HAI^MONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

RA^214 RA-215 RA-216

18059 18902 19893

APR 11, 1973

55.0 57.0 52.5

78.5 79.0 78.5

126.0 126.0 125.0

54.0 54.0 52.5(FULL)

60.0 70.0 60.0 70.0 61.0 71.0

4 7 3 8 5 8

1 3 1 1 1 3

2 3 1 1 2 2

4 7 3 10 5 8

500 500 500 530 500 500

39.0 39. 0 37.5

N.M. N.M. N.M.

1.6 1.5 1.4

1.7 1.8 • 1.9

1. 56 1, 56 1. 55

303
FRFOIIFNCY IN CYCLES PER SECOND
FREQUENCY IN CYCLES PER SECOND

305
PADIOEAR

M0DEL:1030 LF SC:IN AVC SC : OUT TUBING:15/32 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

SINPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

RA-217 RA-218 RA-219

108 418 609

APR II, 1973

50.0

78.0

120.0

48.0

80.5

121.0

48.0

78.0

121.0

48.0

60.0 70.0

5 4

1 2

1 1 4 24

500 1660

40.0

N.M.

1.6

1.6

1.55

48. 0( FULL

)

61.5 71.5

4 4

1 1

1 1 500 1650

38. 5

N.M.

1.6

1. 6

1.54

48. 0( FULL)

61.0 71.

5 4

1 2

1 0

4 22

500 1660

38.0

N.M.

1.6

1.6

1.55

306
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

307
FREQUENCY IN CYCLES PER SECOND

308
FREQUENCY IN CYCLES PER SECOND

309
PCI

model: SOFT SOUND

OE HIGH PASS

T0NE:P0S 1 TUBING:! 1/8 BATTERY:675

CODE

SERIAL #

DATE

RC-0I6

2100

RC-017

2103

APR 23t 1973

RC^OIS

2104

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN 08 39.0

MPO, RANDOM NOISE

INPUT LEVELt DB 82.0

OUTPUT LEVEL DB 114.5

39.5

82.5

113.0

42.5

82.0

113.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

39. 0( FULL ) 65.0 75.0

0 0

7 75

0 5

18 90

1650 1610

42.5

N.M.

.9

.9

1.38

39. 5( FULL)

65.0 75.0

0 1 0 54

1 8

6 62

1650 1740

41.0

N.M.

.9

.9

1.35

42. 5( FULL)

63. 5 73.

0 2

0 36

1 8

2 44

1680 1340

41. 5

N.M.

.8

.8

1.37

S/N 2KHZ 41.5 38. 5 38.0

310
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

311
FREQUENCY IN CYCLES PER SECOND

312
RCI OE HIGH PASS

MODELtWIDE BAND TONE:POS 1 TUBING:! 1/8 BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL* DB

OUTPUT LEVEL DB

RC-019

2188

46. 0

82. 5

122.0

RC-020

2189

APR 23, 1973

45. 5

82. 5

122-0

RC-021

2200

45, 0

83.5

122.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

46-0( FULL

)

65.0 75.0

0 6

2 20

0 7

3 22

1630 1300

43. 0

N. M1.5

1. 5

1.40

45.5(FULL)

63.5 73.5

0 6

1 16

0 9

1 20

1500 1290

41.0

N.M.

1.5

1.5

1.38

45, 0{ FULL)

65.0 75.0

0 6

0 15

0 8

1 20

1630 1320

42.0

N.M.

1.5

1.5

1.39

S/N 2KHZ 41.5 42.5 41.5

313

FREQUENCY IN CYCLES PER SECOND

315
RCI

MODELtSUPER POWER

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN D3

HARMONIC DIST

SINPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DPAINv MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

OE

LO:l Hl:l TUBINGsl 1/8

RC-022

7470

58. 5

80,0

123.5

53. 0

60,0 70.0

0 1 2 33

0 8

5 37

1650 1380

46,0

N.M.

1.6

1.7

1,34

RC-023

7472

APR 23,

59. 0

81. 5

123.0

53. 5

60.0 70.0

0 2

0 31

0 9

1 32

1660 1440

46, 5

N.M.

1.5

1.6

1.35

RC-024

7479

60. 0

83.0

123.5

56.0

60.0 70.0

0 1 0 30

0 8

2 36

1680 1410

49. 5

N.M.

1.7

1.7

1.34

S/N 2KHZ 43,5 43.0 45.5

316
FRPOiiE'Nr.Y IM r.yr.\ F«i ppf? <;pi~r»Mn

FREQUENCY IN CYCLES PER SECOND

317
FREQUENCY IN CYCLES PER SECOND

318

(
SIEMENS OE

M0DEL:H21FF TONE:NQNE TUBING:! 1/8 BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

S I-lOO

9736

52,0

77.0

121. 5

SI-101

9893

APR 26, 1973

52.0

76.5

122.0

SI-102

12398

53.0

77.0

122.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 ,DB INPUT

BATTERY VOLTAGE

DB

%

%

%

%

DB

MA

52.0(FULL)

60.0 70.0

6 6

1 2

1 4

5 13

500 1960

51.0

N.M.

1.7

1.7

1.38

52. 0( FULL ) 60.0 70.0

6 10

2 4

1 4

6 17

500 2000

51. 0

N.M.

1.5

1. 5

1.38

53.0(FULL)

60,0 70.0

7 10

1 3

0 2

7 17

500 2000

51.0

N.M.

1.8

1.8

1.38

319

" t: - JTI r

rH-—

—1—1

]i nm

m- It + _|_.

||4rijTjJ:;;

tip-

:z±::i|±:::jr?l|:^ii

—3 ^ 4 5 e 7 8 9 1000

f

^ p

i4-

—1_ ±T-

-4+---

2 3? 3

if Sft

lii

A "S FREQUENCY IN CYCLES PER SECOND

321
SIEMENS OE

M0DEL:H22AGC TONE :CW TUBING:! 1/8 BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVELt DB

OUTPUT LEVEL DB

S 1-103

11992

43. 5

82.0

117.5

SI-104

11996

APR 27, 1973

43.5

82.5

116.0

SI-IOS

12093

44.0

82. 5

117.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

43.5(FULL ) 67.0 77.0

8 12

3

2

18

13

3

26

1320 1320

44.0

N.M.

1.9

1.9

1.38

43 . 5( FULL ) 66.5 76.5

10 14

3

2

10

12

4

16

500 1570

43. 5

N.M.

1.5

1. 5

1.37

44.0(FULL)

68.0 78.0

9 14

3 12

3 4

17 24

1300 1290

44. 0

N.M.

1.6

1.6

1.37

322

FREQUENCY IN CYCLES PER SECOND

324
SIEMENS OE

M00EL:H24SL TONErCW TUBING:l 1/8 BATTERY:675

CODE SI-106 Sl-107 SI-108

SERIAL # 6158 8687 13788

DATE APR 27, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 68.0 68.0 69. 0

MPO, RANDOM NOISE

INPUT LEVEL, DB 77.5 74,0 75.0

OUTPUT LEVEL DB 128.0 129.0 129.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 55. 5 57. 0 58.0

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0 60.0 70.0 60.0 70.0

500 HZ % 2 4 4 14 7 18

700 HZ % 1 2 3 8 2 7

900 HZ % 1 1 1 5 1 6

MAX DIST % 6 13 5 14 7 18

FREO OF MAX DI S 2080 2070 1320 500 500 500

S/N RATIO DB

IKHZ SIGNAL 46. 0 44. 0 44.5

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 2.4 2.3 2.2

65 DB INPUT 3.3 2.9 3.1

BATTERY VOLTAGE 1.33 1.35 1.36

325
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

326
FREQUENCY IN CYCLES PER SECOND

327
SIEMENS OE HIGH PASS

M0DEL:H-360 TONEtNQNE TUBING:! 1/8 BATTERY:RM13

CODE SI-I09

SERIAL # 556

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 28.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 76.5

OUTPUT LEVEL DB 109.5

SI^llO SI-lIl

566A 756

APR 26, 1973

31.0

75.5

110.0

31.0

75.0

110.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

25.0

60.0 70.0

4 4

2 2

0 2

5 8

1190 1300

34.0

N.M.

.4

.4

1.38

28. 0

60.0 70.0

4 4

2 5

0 1 4 5

500 700

36. 5

N-M.

.4

.4

1.36

28.0

60.0 70.0

4 3

2 0

1 2

5 10

1230 1300

37.0

N.M,

.4

.4

1.41

S/N 2KHZ 52.0 52.5 52.0

328

FREQUENCY IN CYCLES PER SECOND

330
SIEMENS OE HIGH PASS

M0DEL:LG360 TONErCCW TUBING: 1 1/8 BATTERY :RM- 13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

SlINPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

S/N 2KHZ

SI-1I2 SI-113 SI-1I4

1211 1310 1332

APR 26, 1973

20.0 23.0 21.0

82.5 83.5 82.0

109.5 108.5 106.5

20.0(FULL)

69.0 79.0

2 2

1 3

0 1 5 12

1280 1320

38. 0

N.M.

.7

-7

1.37

52. 5

23. 0( FULL)

70.0 80.0

1 1 2 5

0 1 4 8

1380 1350

21.0{FULL)

67.0 77.0

1 1 2 7

0 1 5 16

1270 1320

41. 0

N.M.

.7

.7

1.37

49. 5

39.0

N.M.

.6

.6

1.38

53. 0

331
FREQUENCY IN CYCLES PER SECOND

332
FREQUENCY IN CYCLES PER SECOND

333
SIEMENS OB

M0DEL:394 TONEiSEE BELOW EARPH0NE:14A B ATT ERY : MN9 100

CODE S 1-115 SI-116 SI-117

SERIAL # d f99 I Z 86 14 28918

DATE Ann OCT i/^'^o APR 25, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 82.5 82. 0 84. 0

MPO, RANDOM NOISE

INPUT LEVEL, DB 68.5 69.0 70.5

OUTPUT LEVEL DB 13 6.0 135.5 134.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 69. 5 6o , U 69.5

HARMONIC DIST

o)INPUT LEVEL DB oU.U fU.U oU.U lU.U oU.U fU.U

500 HZ % D { o o 11 14

700 HZ % 1 5 2 4 2 4

900 HZ % 1 5 3 7 2 4

MAX DIST % 6 7 6 9 11 14

FREQ OF MAX DIS 500 500 500 880 50 0 5 00

S/N RATIO DB

IKHZ SIGNAL DD. 5 H- f • 0 56.0

S/HUM RATIO DB

IKHZ SIGNAL N. M. N •M • N . M . BATTERY DRAIN, MA

NO INPUT 5.9 6.0 6.2

65 DB INPUT 9. 4 9. 0 9.7

BATTERY VOLTAGE 1.48 1. 50 1.48

T0NE:N PC:CW VOL REG :T
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

335
FREQUENCY IN CYCLES PER SECOND

336
SONOTONE OE

M00EL:36-13 MIKE ROTOR VALVE FORWARD TUBINGU 1/8 BATTERY:RM13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVELt DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

500 HZ

700 HZ

900 HZ

MAX DIST

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

SO-238

15232

DB

%

%

%

%

DB

MA

37.5

79.0

105.5

37. 5(FULL)

61.0 71.0

10 6

4 2

1 I 10 6

500 500

46.0

N. M.

.6

.6

1.37

SO-239

15282

MAY 31, 1973

33.0

80.0

103. 5

SO-24

015314

33. 0(FULL}

60.0 70.0

8 8

3 2

2 3

8 8

500 500

45.5

N.M.

.6

.6

1.36

39.0

78.0

104.0

35.0

60.0 70.0

10 4

2 1 2 1

10 4

500 500

46. 5

N.M.

.7

.7

1.37

337
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

338
FREQUENCY IN CYCLES PER SECOND

339
SONOTONE OE

M0DEL:36-21 MIKE ROTOR VALVE FORWARD TUBING:! 1/8 BATTERY:RMI3

CODE SO-241

SERIAL # 15170

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 46.0

MPOt RANDOM NOISE

INPUT LEVEL, DB 81.0

OUTPUT LEVEL DB 117.5

SO-242

15193

MAY 31» 1973

48. 0

82. 0

118.5

SO-243

15206

47.5

81.0

118.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

cDINPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N PATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

46. 0( FULL

)

62. 72.0

12

4

3

35

500 1940

41.0

N.M.

.9

.9

1.37

48. 0( FULL ) 60.0 70.0

9 14

3

2

9

6

5

50

500 1630

40.5

N.M.

1.1

1. 1 1. 36

44.5

60.0 70.0

7 11

4

2

18

6

2

47

2000 2000

40.5

N.M.

.9

.9

1.37

340
FREQUENCY IN CYCLES PER SECOND

341
FREQUENCY IN CYCLES PER SECOND

342
SONOTONE OE

M0DEL:77S T0NE:N0NE TUBING:! 1/8 BATTERY:S76

CODE SO-244

SERIAL # 13843-S

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 56.5

MPOt RANDOM NOISE

INPUT LEVEL, DB 78.0

OUTPUT LEVEL DB 124.0

SO-245

13867-S

MAY 1, 1973

58. 0

80. 0

124.5

SO-246

14348-S

58.0

76.0

124.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

53. 0

60.0 70.0

2 1

1 2

1 2

2 4

500 2240

46.0

N.M.

3. 2

3.2

1. 55

54. 5

60.0 70.0

2 3

10

2

2

1 10

500 1750

45. 0

N.M.

3. 0

3.0

1. 53

54.0

60.0 70.0

2 4

1 2

1 1 3 7

1350 1690

46. 5

N.M.

3,6

3.6

1.53

343
FREQUENCY IN CYCLES PER SECOND

\

FREQUENCY IN CYCLES PER SECOND

344
FREQUENCY IN CYCLES PER SECOND

345
SONOTONE OB

M0DFL:670XV TONE:F-N-N-P RED INSERT E AP PHON E: 4i-21R 0 BATTER Y:TR132

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

SINPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

SO-247

A-5001

82. 0

71.5

141.5

71.0

60.0 70.0

13 23

4

2

13

500

51.5

N.M.

8.6

24.5

2. 60

11

4

23

500

S0-'248

A- 6608

MAY 2, 1973

81. 0

SO-249

A-6678

74.5

141. 0

72.0

60.0 70.0

12

2

3

12

8

10

11

19

500 1360

53.0

N.M.

8. 5 25.0

2. 57

84.5

68.0

141.5

71.5

60.0 70.0

8 20

2 8

1 3

8 20

500 500

50.5

N.M.

8.5

25.0

2-60

346
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

347
FREQUENCY IN CYCLES PER SECOND

348
SONOTONE EG

MOOELi^O-S TONE:NONE TUBING:! 1/2 BATTERY:S76

CODE SO-250

SERIAL # 30216

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 53.5

MPg, RANDOM NOISE

INPUT LEVEL, DB 78.5

OUTPUT LEVEL DB 123.0

SO-251

30220

MAY 1, 1973

55.5

80.0

125. 0

SO-252

30229

56.5

80.0

124,5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

53.5(FULL ) 60.0 70.0

3 3

2

13

5

2

17

500 1810

44.5

N.M.

3.0

3.0

1. 55

54.0

60.0 70.0

2 3

1 3

1 4

2 13

500 1700

45.0

N.M.

3.0

3.0

1.55

54.5

60,0 70.0

2 1 1 2

0 1 2 6

500 1820

46.0

N.M.

2.7

2.7

1.55

349

FREQUENCY IN CYCLES PER SECOND

351
SONOTONE CR

M00EL:35AZ TONE:NONE TUBING:! 1/2 BATTERY:S76

CODE SO-253

SERIAL # Z-55646

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 56.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 78.0

OUTPUT LEVEL DB 124.0

SO-254

Z-55657

MAY I, 1973

54.5

78. 5

123.0

SO-255

Z-55665

54. 5

76. 5

123.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

5)INPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

54. 0

60.0 70.0

1 7

1 5

1 4

2 12

850 1650

53.0

N.M.

1.8

1.9

1. 54

52. 5

60 70.0

8

7

6

11

830 1660

52.0

N.M.

2.3

2.5

1. 54

53.5

60.0 70.0

1 4

3

3

9

870 1650

53.5

N.M.

2.7

3.1

1.55

352
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

353
FREQUENCY IN CYCLES PER SECOND

354
TELEX

M00EL:25 T0NE:CCW BATTERY:S13

IE

CODE

SEPTAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

TE-244 TE-245 TE-246

7706 7867 7919

MAY 25, 1973

39.0 41.0 42.0

81.5 82.0 83.0

103.0 104.0 105.0

39.0(FULL) 41.0(FULL) 42.0(FULL)

62.0 72.0 63.5 73.5 63.0 73.0

2 4 5 9 3 7

4 12 6 12 4 14

2 9 5 12 5 11

4 14 6 12 5 18

700 680 700 900 900 640

40.0 43. 5 43.0

N.M. N.M N.M.

1.0 1. 0 1.1

1.0 1. 1 1. 1 1.53 1. 54 1.53

355
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

356
FREQUENCY IN CYCLES PER SECOND

357
TELEX OB

MODEL:70 P:CW T:CW EARPHONE : 3 5681 BATTERY:502

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN OB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

F^EQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAINt MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

TE-247 TE-248 TE-249

0010 C017 0022

APR 25, 1973

70.0 67.0 68.0

67.5 70.0 66.0

132.0 133.5 132.5

62-5 61.5 59.5

60.0 70.0

3 7

3 3

1 1 3 8

500 1280

60.0 70.0

9 10

9 15

3 4

9 15

740 700

60.0 70.0

8 6

3 4

4 4

8 7

500 1320

44.0 41.5 42.5

N.M. N.M. N.M.

4.7 5.5 5.0

10.3 11.1 11.2

1.44 1.45 1,46

358
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

359
FREQUENCY IN CYCLES PER SECOND

360
TELEX OE

M0DEL:33LP TONE:CW TUBING:!*' BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVELt DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FPEO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

TE-250 TE-251 TE-252

10803 10805 10852

APR 24,

46.0 46.5 47.5

81.5 81.5 82.5

121.0 121.0 121.5

46.0(FULL

)

65.0 75.0

7 8

3 7

1 4

6 17

500 1460

50.0

N.M.

1.2

1.8

1.36

46. 5( FULL)

65.5 75.5

3 4

2 7

1 3

5 15

1230 1570

50.0

N.M.

1.2

2. 1 1.37

47.5(FULL)

67.0 77.0

3 4

2 6

1 3

10 18

1860 1850

49.0

N.M.

2.3

1.8

1.33

361
P-RFOIIPNCIY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

362
363
TELEX OE HIGH PASS

M00EL:131 TONE:CW TUBING:11/16 BATTERY:RM13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL

900 HZ

1500 HZ

2000 HZ

MAX DIST

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO

IKHZ SIGNAL

BATTERY DRAIN,

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

TE~253

7440

TE-254 TE-255

7481 7484

APR 24, 1973

DB

%

%

DB

MA

38.0

81,0

116.5

38.0(FULL

)

67.0 77.0

4 11

10 28

1 4

11 29

1530 1530

47.0

N.M.

.4

.5

1 .33

39.0

82.5

118.0

39. 0( FULL)

68.0 78.0

3 7

9 14

2 6

10 16

1220 1470

48.0

N.M,

.5

.5

1.34

37.5

82.5

118.0

37.5(FULL)

69.0 79.0

4 10

16 30

2 3

16 33

1540 1510

47.0

N.M.

.5

.5

1.37

S/N 2KHZ 47.5 49. 0 49. 5

364
FREQUENCY IN CYCLES PER SECONin

FREQUENCY IN CYCLES PER SECOND

365
FREQUENCY IN CYCLES PER SECOND

366
VICON OE

M0DEL:0E-85 T0NE:N0NE TUBING:7/8 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL Va CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

S/N 2KHZ

VI-202 VI-203 VI-204

F4286 F4365 F4412

JUNE 7, 1973

34.5

78.0

117.5

34.0

77.0

116.5

35.5

78.0

117.0

32.0

60.0 70.0

3 1 5 8

1 6

7 13

2150 2150

36. 5

N.M.

1.4

1.4

1 .54

53. 5

32. 0

60.0 70.0

3 1 5 9

2 6

45 46

1660 1660

36. 0

N.M.

1.1

1.1

1.54

» 52. 0

32. 5

60.0 70.0

2 1 6 10

2 7

9 20

1700 1670

38.5

N.M.

1.4

1.4

1.54

54. 5

367
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

368
FREQUENCY IN CYCLES PER SECOND

369
VICON OE

M0DEL:0E-127 T0NE:N0NE TUBING:7/8 BATTERY:S76

CODE

SERIAL #

DATE

VI-205

16578

VI-206

22426

MAY 11, 1973

VI-207

22628

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB ov« 0 O J . c

Z> MPO, RANDOM NOISE

INPUT LEVEL, DB 78 • 0 74. 5

7 /.

» H . A

OUTPUT LEVEL DB l^l9 • b TOO Au MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 61.0 OOm U Do.

HARMONIC DIST

aiNPUT LEVEL DB 6 0.0 70,0 A A "7 n A dU.U /U.U /LA A "7A A

500 HZ % 3 13 1 A 1 A 10 10 1 3

700 HZ % 1 8 2 5 3 1

900 HZ % 2 5 2 4

1 A1 u MAX DIST % 3 13 10 13 1 3 23

FREO OF MAX DI S 1130 500 500 500 500 500

S/N RATIO DB

IKHZ SIGNAL 46. 5 46.0 46. 0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M. N.M • BATTERY DRAIN, MA

NO INPUT 2.5 2. 8 2- 3

65 DB INPUT 5.9 6.2 5. 5

BATTERY VOLTAGE 1. 53 1.53 1. 54

370
371
FREQUENCY IN CYCLES PER SECOND

372
VICON OE

M0DEL:0E-128 T0NE:N0NE TUBING:7/8 BATTERY:S76

CODE

SERIAL #

DATE

VI-208

13044

VI-209

14124

MAY 11, 1973

VI-210

14294

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 60.5

MPO, RANDOM NOISE

INPUT LEVEL, OB 77.0

OUTPUT LEVEL DB 125.0

64. 0

74.0

125.0

63.0

78.0

127.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

52.0

60.0 70.0

5 5

1 1 0 0

5 5

500 500

45.5

N.M.

1.8

4.2

1.53

52.5

60.0 70.0

7 9

0

17

500

47.5

N.M.

1. 8

3.8

1. 53

119

500

56.0

60.0 70.0

9 11

2

0

9

50 0

48.5

N.M.

1.8

4.2

1. 53

3

0

11

500

373
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

374
FREQUENCY IN CYCLES PER SECOND

375
VICON OE

M0DEL:0E-132 T0NE:N0NE TUBING: 1 3/8 BATTERY:S13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC OIST

aiNPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREQ OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

VI-211

ABQ

39. 5

70. 0

112.0

33.0

60.0 70.0

0 1 2 6

2 10

3 20

1920 1920

34. 0

N.M.

.5

. 5

1. 54

VI-212

AEK

JUNE 7, 1973

39. 5

71.0

113.0

33.5

60.0 70.0

2 1 2 14

2 17

3 30

1920 1920

33. 5

N.M.

.6

.6

1. 54

VI-213

AMII

44.0

72.0

113.0

38.5

60.0 70.0

0 0

3 23

1 10

4 28

1370 1870

36.5

N.M.

. 5

.5

1. 53

S/N 2KHZ 44.0 42.5 42.5

376
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

377
FREQUENCY IN CYCLES PER SECOND

378
VICON OE

M0DEL:0E-135 T0NE:A TUBING:7/8 BATTERY:S76

CODE VI-214

SERIAL # 24654

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 49.0

MPOt RANDOM NOISE

INPUT LEVELt DB 79.5

OUTPUT LEVEL DB 120.0

VI-215

24696

MAY 14, 1973

50. 0

80.0

119.0

VI-216

24749

50.0

81.0

119.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM PATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

46.0

6 0.0 70.0

1 2

0 0

0 : 6 54

1580 1570

43.0

N.M.

2.1

2.1

1. 54

44. 0

60.0 70.0

2 2

0

0

6

0

2

42

1560 1560

46. 0

N.M.

2.1

2. 1 1. 54

45.5

60.0 70.0

1 3

0

0

9

0

1 36

1430 1420

44. 5

N.M,

1.9

1.9

1.54

379
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

380
\

11

'-^

^-

p

-

--1

_

-\

-'- —

^-

-

-

-

t

—

- J

"1"

:

N

]

i

: . i

' jil i|

.

. Mi -- il ! ri ] --[ i^m! !

1 iiil'lll llil^M

fiii 1 iliijr , fea

' ^ ^

*' /^^ixu T

~

llii: illiillfe

n

-

...

-k

t1-

i

4- :=

—

—

4

rrL

-

-

r

-

- -)

1

\i

1

1

1

T"

-f

!

-m

mm

"^-^

—

;i;;:4":;:

Ti

i

4 1 i

V1 -'-^

\—z

- -

1

- i- 4

1

j- :h|iJ Jj-jiqiii4|j

Ifliif': : : M

6 7 S 9 lOOC)

fi

-_

"T -:

-1 It r'

---

k

K

2

72 1A FREQUENCY IN CYCLES PER SECOND

381
VICON

MODEL tOE-iae T0NE:A TUBING:7/8

OE

BATTERY:S76

CODE

SERIAL #

DATE

VI-217

24326

Vl-218 VI-219

24374 24512

MAY 14, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 47.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 80.0

OUTPUT LEVEL DB 120.0

48.0

81.0

119.0

45.0

80.0

119.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

45.5

60.0 70.0

2 1 0 0

0 0

3 32

1480 1530

43.5

N.M.

2.3

2.3

1. 55

46. 0

60.0 70.0

2 1 0 0

0 0

6 34

1470 1500

46.5

N.M.

2. 1 2.1

1. 55

42.5

60.0 70.0

1 0

0 0

0 0

3 28

1470 1550

42. 5

N.M.

2.1

2.

1.55

382
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

383
FREQUENCY IN CYCLES PER SECOND

384
VI CON OE SPECIAL

M00EL:0E-139 T0NE:N0NE TUBING:! 3/8 BATTERY:SI3

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

VI-220 VI-22I VI-222

ABL ACR AEY

JUNE 13, 197

41.0

73.0

111.0

41.0

71.0

111.0

41.5

72.0

112.0

36.5

60.0 70.0

0 0

0 0

0 0

2 20

1940 1920

40.5

N.M.

.7

.7

1.55

35.5

60.0 70.0

0 0

0 0

0 1 1 22

2010 1930

39.5

N.M.

.7

.7

1.55

36.0

60.0 70.0

0 0

0 0

0 1

1 20

2040 1950

40.0

N.M.

.7

.7

1.54

385
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

386
FREQUENCY IN CYCLES PER SECOND

387
WIDEX OE

M0DEL:A1-T T0NE:SEE BELOW TUBING:3/4 BATTERY:675

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

WI-061

8 50

48. 0

83.0

117.0

WI-062

859

JUNE 12, 197

46. 0

82.0

115.0

WI-063

864

46.0

81.5

116.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

SINPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

45. 5

60.0 70.0

0

2

0

4

1500 1270

40.5

N.M.

1.1

1.1

1.39

46. 0( FULL ) 60.0 70.0

6 7

I0

6

500

41.0

N.M.

1.4

1.4

1.41

3

17

5 00

44.0

60.0 70.0

6 6

500 500

41.0

N.M.

1.1

1.1

1.41

LEFT:BETWEEN 1:2 CENTER:CW PIGHT:CCW

388
389
FREQUENCY IN CYCLES PER SECOND

390
WIDEX OE

M0DEL:A2T L:CW R:CCW TUBING:3/4 BATTERY:675

CODE

SERIAL #

DATE

WI-064

85920

WI-065

85925

MAY 4, 1973

WI'-066

85953

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 51.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 82.0

OUTPUT LEVEL DB 128.5

53. 0

82. 5

129. 0

52.0

83.0

129.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

51.0(FULL)

67.0 77.0

3 7

2

16

1530

5

3

6

500

46.5

N.M.

7.9

11.8

1 .32

53. 0( FULL)

66.0 76 .0

6 11

2

16

500

46. 0

N.M.

7.3

11. 5

1.33

5

3

11

500

52.0{FULL)

67.0 77.0

9 14

4 6

1 2

9 14

500 500

48. 0

N.M.

8.5

10. 8

1.34

391
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

392
393
WIDEX

M00EL:29 TONE:H EARPHONE : AFT-1

OB

BATTERY:401

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 OB INPUT

BATTERY VOLTAGE

WI-067 WI-068 WI-069

546077 567861 567868

MAY 7, 1973

53. 0

72.0

117.5

53. 5

75. 0

118.0

54.0

70.0

119.0

44. 5

60.0 70.0

2 3

1 3

2 3

2 20

500 1570

50.5

N.M.

2.6

2.5

1.42

45.5

60.0 70.0

2 4

1 4

2 7

2 25

500 1600

50.0

N.M.

2. 5

2.5

1.42

45.5

60.0 70.0

2 3

1 3

2 4

2 10

1070 1310

48.0

N.M.

2. 5

2.5

1.45

354
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

395
FREQUENCY IN CYCLES PER SECOND

396
WIDEX OB

M0DEL:45 TONE:N EARPHONE : AFA-0 BATTERY:401

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN* MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

WI-070 WI-07I WI-072

543311 543318 554990

MAY 7, 1973

72.5 71.5 71.5

73.5 72.0 74.5

137.5 138.0 138.0

66. 0 64. 0 65.0

.0.0 70.0 60.0 70 .0 60.0 70.0

8 8 9 9 8 8

15 17 14 22 15 21

2 2 6 6 4 3

17 18 23 30 18 22

700 720 750 760 740 740

43.0 42. 0 43.0

N.M. N.M • N.M.

4.1 4. 5 5.5

19.0 17. 5 18.0

1.32 1. 32 1.33

397
FREQUENCY IN CYCLES PER SECOND

398
FREQUENCY IN CYCLES PER SECOND

399
WIDEX

M0DEL:52 T0NE:N0NE

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

OE

TUBING:3/4 BATTERY:S76

WI-073 WI-074 WI-075

609533 609586 611516

MAY 4, 1973

61.5

78. 5

128.5

61. 5

79.5

128.0

60.0

80.0

128. 0

59.0

60.0 70.0

9 12

5 9

2 2

9 12

500 500

49. 5

N.M.

2.6

3. 3

1.54

58.5

60.0 70.0

7 12

4 7

2 2

7 12

500 500

49. 5

N.M.

2.8

3.3

1.55

57.0

60.0 70.0

5 8

3 7

2 1 5 11

500 1730

49.5

N.M.

3.2

3.7

1. 54

400

402
WIDEX OE

M0DEL:85 H:CW TUBING:3/4 BATTERY:675

HIGH PASS

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPO, RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

SIINPUT LEVEL DB

900 HZ %

1500 HZ %

2000 HZ %

MAX DIST %

FREQ OF MAX DI

S

S/N PATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

S/N 2KHZ,

WI-076 WI-077 WI-078

19849 19855 23537

JUNE 5, 1973

39.0 38.0 39.0

81.0 82.0 83.0

117.0 118.0 117.5

39. 0( FULL

)

38. 0( FULL

)

39.0(FULL)

65.0 75.0 65

1500 1500

42. 5

N.M.

1.1

1. 1 1.33

75.0

2

0

12

700 2240

40. 5

N.M.

1.3

1,3

1. 33

65.0 75.0

1 2

4 6

0 1 4 45

1500 1290

43.5

N.M.

1.1

1.1

1.34

46.0 44.0 45.0

403
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

404
FREQUENCY IN CYCLES PER SECOND

405
WIDEX Q MODEL:105 TONErCW TUBING:3/4 BATTERY:S13

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPOt RANDOM NOISE

INPUT LEVEL, DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREQ OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

WI-079 WI-080 WI-081

81834 81850 92498

MAY 4, 1973

52.0

80. 5

121 .5

50. 5 81.5

121. 5

52. 0

81.5

121.0

52. 0{FULL

)

63.0 73.0

3 5

1 2

0 1 3 56

500 1590

48.0

N.M.

1.8

1.8

1.53

50. 5( FULL ) 65.0 75.0

3 3

0 1 0 3

3 50

500 1530

47. 5

N.M.

1.8

1.8

1. 53

52.0(FULL)

63.0 73.0

3 2

1 1 0 2

3 43

500 1580

49.0

N.M.

1.9

1.9

1. 54

406
407
FREQUENCY IN CYCLES PER SECOND

408
ZENITH BI

MODEL:BICROS TONEiNONE TUBING:!. 675 BATTERY:RM41

CODE

SERIAL #

DATE

ZE-253

880-8752

ZE-254 ZE-255

8810914 8810951

JUNE 7, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 24.0

MPOt RANDOM NOISE

INPUT LEVEL, DB 80.5

OUTPUT LEVEL DB ^ 111.0

27. 0

81.5

113.0

27.0

80.0

113.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ Z

900 HZ %

MAX DIST %

FREO OF MAX DI

S

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAINt MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

24.0(FULL)

65.0 75.0

0 0

0 2

2 13

21 62

1260 1260

38.5

N.M.

1.4

1.4

1.32

27.0(FULL)

63.0 73.0

0 1 1 5

3 20

17 58

1120 1120

39.0

N.M.

1.4

1.4

1.33

27.0(FULL)

63.0 73.0

0 0

2 7

4 21

10 38

1120 1080

38.5

N.M.

1.5

1.5

1.36

S/N 2KHZ 51-0

HARMONIC DISTORTION

1500 5 15

2000 3 6

55.5

4 12

0 0

65.5

2 10

0 1

409
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

410
FREQUENCY IN CYCLES PER SECOND

411
ZENITH CR

M0DEL:CR0S T0NE:N0NE TUBING:1.675 BATTERY:RM41

CODE ZE-256

SERIAL # 881-1578

DATE

MEASUREMENTS WITH

FULL Va CONTROL

IKHZ GAIN DB 29.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 81.5

OUTPUT LEVEL DB 115.0

ZE-257

881-1636

JUNE 8, 1973

29.5

82.0

114.0

ZE-258

881-1724

29.0

80.0

114.0

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DIS

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAIN, MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

29.5(FULL)

64.0 74.0

0 1 1 4

3 12

10 31

1120 1120

39.0

N.M.

1.4

1.4

1.33

29. 5( FULL)

62.5 72.5

0 1 0 3

4 13

9 30

1110 1110

37.0

N.M.

1.4

1.4

1.34

29.0(FULL)

63.0 73.0

0 0

1 3

3 8

8 24

1120 1120

37.0

N.M.

1.4

1.4

1.34

S/N 2KHZ 55.5 53. 5 52.5

DI STORTION

1500

2000

2

0

412
FREQUENCY IN CYCLES PER SECOND

413
FREQUENCY IN CYCLES PER SECOND

414
ZENITH OB HIGH PASS

M0DEL:ELPA PD T0NE:B EARPHQNE:Y4 BATTERY:401

CODE ZE-259 ZE-260 ZE-261

SERIAL # 8426904 8427339 8428045

DATE MAY 10, 1973

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 68. 5 68. 0 68.5

MPO, RANDOM NOISE

INPUT LEVEL, DB 72.5 77.0 67.0

OUTPUT LEVEL DB 129.0 127. 0 128.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 55.0 46.0 45.0

HARMONIC DIST

S)INPUT LEVEL DB 60.0 70.0 60.0 70.0 60.0 70.0

900 HZ % 6 4 7 7 10 10

1500 HZ % 3 4 1 4 1 5 2000 HZ % 1 1 0 1 0 0

MAX DIST % 6 4 7 7 10 10

FREO OF MAX DIS 900 900 900 900 900 900

S/N RATIO DB

IKHZ SIGNAL 54. 5 47. 0 43.5

S/HUM PATIO DB

IKHZ SIGNAL N. M. N.M. N.M.

BATTERY DRAINt MA

NO INPUT 3.4 4. 2 3.1

65 DB INPUT 14.2 14.5 8.7

BATTERY VOLTAGE 1.32 1.35 1.35

S/N 2KHZ 62.0 62. 5 62.0
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

416
FREQUENCY IN CYCLES PER SECOND

417
ZENITH OE

M0DEL:PACEMAKER EP T0NE:NQNE TUBING:!. 175 BATTERY:S76

CODE

SERIAL #

DATE

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB

MPCt RANDOM NOISE

INPUT LEVELt DB

OUTPUT LEVEL DB

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB

HARMONIC DIST

aiNPUT LEVEL DB

500 HZ %

700 HZ %

900 HZ %

MAX DIST %

FREO OF MAX DI

S/N RATIO DB

IKHZ SIGNAL

S/HUM RATIO DB

IKHZ SIGNAL

BATTERY DRAINt MA

NO INPUT

65 DB INPUT

BATTERY VOLTAGE

ZE-262 ZE-263 ZE'-264

UD-833- UD-986 UE-050

MAY 8, 1973

57.5 58.0 58.0

78.0 78.0 79.0

128.0 128.0 129.0

53.5

6 0.0 70.0

7 9

3 9

3 3

7 9

1060 700

40.0

N.M.

1-2

2.8

1.53

55.0

60.0 70.0

3 1 1 3 14

2 3

4 14

1060 720

42.0

N.M.

1.0

3. 1 1.53

55.0

60.0 70.0

2 5

2 6

2 4

18 26

1780 1760

39. 5

N.M.

1.1

3.0

1.55

418
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

419
420
ZENITH OB

MODEL CVOCALIZER III PWRrFULL TONE:L.C. EARPH0NE:Y5 BATTERY:401

CODE

SERIAL #

DATE

ZE-265

21181

ZE-266

22022

MAY 8, 1973

ZE-267

22489

MEASUREMENTS WITH

FULL VOL CONTROL

IKHZ GAIN DB 68.0

MPO, RANDOM NOISE

INPUT LEVEL, DB 80.0

OUTPUT LEVEL DB ^ 134.0

72.5

78.0

134. 0

73.0

77.5

134.5

MEASUREMENTS WITH

REDUCED VOLUME

CONTROL SETTING

IKHZ GAIN DB 62.0 59.5

HARMONIC DIST

aiNPUT LEVEL DB 60.0 70.0 60.0 70.0

500 HZ % 2 6 4 4

700 HZ % 1 3 2 9

900 HZ % 1 4 1 0

MAX DIST % 2 6 4 9

FREO OF MAX DIS 500 500 500 700

S/N RATIO DB

IKHZ SIGNAL 52.5 52. 0

S/HUM RATIO DB

IKHZ SIGNAL N.M. N.M.

BATTERY DRAIN, MA

NO INPUT 5.0 4.8

65 DB INPUT 10.0 8. 2

BATTERY VOLTAGE 1 .34 1.38

63.5

60.0 70.0

2 4

1

12

500

52.5

N.M.

4.8

8.8

1.35

3

3

4

500

a FIN

421
FREQUENCY IN CYCLES PER SECOND

FREQUENCY IN CYCLES PER SECOND

422
FREQUENCY IN CYCLES PER SECON

423

« U. S. GOVERNMENT PRINTING OFFICE : 1974 O - 544-466 (743)