Communication System
Personal Station

Digital Wireless Intercom

11:42

□：□
Personal Station

XLR3P

XLR3P

Base Station

2W LINE IN/OUTWIRED INTERCOM
4W LINE IN/OUTWIRED INTERCOMMICROPHONE

SPEAKER (8Ω)

POWER SUPPLYAC 240V
POWER SUPPLY
DC 12V
PUBLICTELEPHONE LINE

③④1:4

1234

1900MHz band②⑧⑨

Dedicated cableBase Station

Cell Station

①②⑤⑧

⑥⑦⑧⑨

Personal Station

Analog Wireless Intercom①〜⑥11:4
3450MHz band 24CH

Coaxial cable
M Type×2（1mw）364Personal Station②⑤POWER SUPPLY
AC 100V

3Cell Station①HEADSET (SP) / (MIC)

Cell Station

1900MHz band

Microphone cable①〜⑦⑨×NM Type410MHz band 72CH
Antenna

24Dedicated device
for receiving command37

Analog Wireless Intercom System

Analog Wireless Intercom System
Antenna power 1mW or less, for surface movement businessWireless Intercom System

1 : 4 Simultaneous Communication System■ Land mobile station
YFF- 4530

Base Station

Specifications
Structure: Rack mounting type
Power supply: AC 100 V
Number of calls: 1:8 simultaneous calls
Circuit configuration: Unit structure
Number of antennas: 2 (transmission/reception shared)
Channel setting: S tation selection is easy with quartz control PLL synthesizer system
Standards: Technical standard conformance has been certificatedEnvironment: -10~+50˚C
Weight: Approx. 7.0 kg

Monitor speaker
Test head set connector
Microphone input connector

Channel settingSwitch

Display switching Switch
Display panel

Main power switch
Power supply indicator

The wireless intercom system of Tamura is a contact/connection system in which an

Microphone volume adjustment volume
Monitor speaker volume adjustment volume
Line level adjustment volume
Side tone adjustment volume
PGM volume adjustment volume

Squelch switch

Backlight switch

Reception unit switch
Transmission switch

operator can exchange information and issue an emergency order freely and without failby radio communication from a work site at any time.
Because the system employs an antenna dispersed system, it is possible to eliminate a
non-sensitive zone of radio waves even in a hidden service area by comprising a system

Antenna connector (M type)Line switching switch

I/O interface Fuse (3A)

FG terminal

with its smallest influence.

AF mixing connector
Originating/receiving call 2W connector
Originating/receiving call 4W connector
PGM input connector

48

External
speaker jackAC 100 V power supply
input connector

49Analog Wireless Intercom System
Personal Station

Command receiving device

YMT- 4120

YRT- 4120

3.5f Monaural

22.5±122.5±1HS-316C

85.4±2
Specifications

57±5

Structure: Compact, light, and drip-proof
Power supply: AA alkali cell×2 Continuous use time is 23 hours
Call: Interactive simultaneous call
Antenna: Helical antenna or whip antenna for transmission/reception
Channel setting: Station selection is easy by quartz control PLL synthesize system
Standards: Technical standard conformance has been certificatedEnvironment: −10~+50˚C
Weight: Approx. 210g (battery pack YBA-4120 included)

AA alkali cell×2* Batteries are not included

91.5±3

CAW-4510

40±2

PBA-4120
Production on order
Nickel-hydrogenbattery (2.4 V)

325±1050±2

YBA-4120

AntennaSpecifications
Type: Dipole type
Applied frequency: 413~454MHz
Type: λ/2 half wavelength type
Junction type: M type
Impedance: 75Ω
Weight: Approx.800g (attachment base included)

DIPOLE ANTENNA
CAW-4510NO.

TAMURA

φ56±2

287.5±3

Battery pack82±282±257±5Structure: Compact, light, and drip-proof
Power supply: AA alkali cell×2 Continuous use time is 20 hours
Call: Interactive simultaneous call
Antenna: Helical antenna or whip antenna for transmission/reception
Channel setting: Station selection is easy by quartz control PLL synthesize system
Environment: 10~+50˚C
Weight: Approx. 220g (battery pack YBA-4120 included)

4±0.5

Specifications

85.4±2120±283.5±1
12±1

70±2

25±1

2-φ4.5±135±1

単位：mm

5051

Wireless Monitoring System

Analog Wireless Intercom System
Electrical characteristics
Base Station
YFF-4530

Half wavelength dipole antenna

Number of frequencies

Reception: 454MHz band

12.5 kHz (Interleave 6.25 kHz)

Oscillation system

Quartz control PLL synthesizer system

Frequency stability

With in ±4ppm

Compander characteristic

主な特長• The transmitter mixer can change transmitter frequency

Transmission compressor 2: 1, Reception expander 1: 2

Antenna power

With in 1mW (+20 -50%) Total of antenna terminal–

2.5 μW or less–Modulation scheme

Direct frequency modulation–

Voice frequency

3 kHz or less(300Hz~3kHz)–

60 dB more than carrier wave power–• There are two types of transmitters: a long-antenna type

With in 8.5 kHz–±2.5kHz less than when carrier frequency without modulation–

designed for a long transmission distance (WTO-0703A)

Strength intensity of spurious radiation

Neighboring channel leak powerOccupied frequency BandwidthFrequency deviation
Reception system

Double superheterodyne

Reception sensitivity

0 dB μV or less at SINAD 12 dB

Squelch sensitivity

Tone SQ: 0 dBμV or less,Noise SQ: 0 dBμV or lessCabinet radiation

4nW or less

Audio frequency characteristic

CommonTransmission: 413MHz band,
Reception: 454MHz band

Downward (master unit transmission): 24 waves, upward (slave unit) 72 waves

SeparationReception

License Free50Ω

Transmission: 454MHz band,Reception: 413MHz band

Frequency rand

Wireless Monitoring System
FM70MHz Band Output 10 mW–Helical antenna or whip antenna

75Ω

Antenna impedanceTransmission

Command receiving device
YRT-4120

F3E/F2D (however, use is inhibited only with F2D)

Radio wave type
Antenna type

Frequency
commonPersonal Station
YMT-4120and turn it on and off by remote control.
• It is possible to use a microphone cable to connect between thetransmitter mixer and the transmitter.

and a portable type designed for mobility (WTP-0705).
• One frequency is selected from 4 frequencies(74.58MHz / 74.64 / 74.70 / 74.7) for a channel.
Up to 3 frequencies can be used in the same area.
• Focusing on stability, a transmission output of 10 mW (0.01 W) isWithin 300 Hz~3kHz

Line input/output

0 dBm, balanced 600Ω (4W)
-20 dBu, unbalanced 220Ω (2W)

Microphone input-60 dBm, balanced 600ΩSpeaker output

Inside; 1W(8Ω),
Outside: 1W(8Ω)

Program input-20~+10 dBm unbalanced 600Ω

Power supply use range−60 dBm, unbalanced 600Ω

with a frequency response of 100 Hz to 7 kHz.

–

15 mW or more (at 8Ω)–At 3.0 V: 150 mA or less

AC100V ± 15%: 1.5A

Use environment

designed even with a small power, achieving high-quality sound–At 3.0 V: 120 mA or lessWarning lamp flashes at 2.3 V or lessTemperature: -10~+50˚C, Humidity: with in 35~90%

Frequency within license
BS
Downward transmission frequency

PS
Upward transmission frequency

PS
Upward transmission frequency

PS
Upward transmission frequency

Channel Frequency Channel Frequency
No.
(MHz)
No.
(MHz)

Channel Frequency Channel Frequency
No.
(MHz)
No.
(MHz)

Channel Frequency Channel Frequency
No.
(MHz)
No.
(MHz)

Channel Frequency Channel Frequency
No.
(MHz)
No.
(MHz)

52

1454.05000

2454.05625

1413.70000

2413.70625

25

413.85000

26

413.85625

49

414.00000

50

414.00625

3454.06250

4454.06875

3413.71250

4413.71875

27

413.86250

28

413.86875

51

414.01250

52

414.01875

5454.07500

6454.08123

5413.72500

6413.73125

29413.87500

30413.88125

53

414.02500

54414.03125

7454.08750

8454.09375

7

413.73750

8413.74375

31413.88750

32413.89375

55414.03750

56

414.04375

9454.10000

10454.10625

9413.75000

10413.75625

33

413.90000

34413.90625

57

414.05000

58414.05625

11454.11250

12454.11875

11413.76250

12413.76875

35

413.91250

36413.91875

59

414.06250

60

414.08875

13454.12500

14454.13125

13

413.77500

14413.78125

37

413.92500

38

413.93125

61

414.07500

62414.08125

15454.13750

16454.14375

15413.78750

16413.79375

39413.93750

40413.94375

63

414.08750

64414.09375

17454.15000

18454.15625

17413.80000

18413.80625

41413.95000

42413.95625

65

414.10000

66

414.10625

19454.16250

20454.16875

19413.81250

20

413.81875

43

413.96250

44413.96875

67414.11250

68

414.11875

21

454.17500

22454.18125

21

413.82500

22

413.83125

45

413.97500

46413.98125

69

414.12500

70

414.13125

23

454.18750

24454.19375

23

413.83750

24

413.84375

47413.98750

48

413.99375

71414.13750

72414.14375

53