The Washington times. [volume] (Washington [D.C.]) 1902-1939, 1924-04-29
QUESTIONS AND ANSWERS

JSuB6WaLer bedcn Hotel, WnlcaEO!
~ What is the wave length?-J. B.
Answer-WGN. (2) $40 Meters.
Question-Where is station WRAZ?
(2) Have they any regular broad
casting schedule?-G. r. Answer
Newark N. J. ~ Tuesday, Wednas.
day and Friday from 1880 to $3.50
p. m.
Question-How many volts are,
used in arc light circuits? (2) Will
sparks umping from an electric
wire to a tree cause Interference
D. NJ. N. Answer--It runs as high
as 10000 volts (2D Yes; such spark
ling causes much interference. Gen.
orally the power company will trim
the tree If the leak is reported.
Question-What determines the
wave length range of a variometer?
~ Should the rotor be as close to
stator as possible. 90 How can the
wave length of a variofneter be
reduced?-D. E.. jr. Answer-The
amount Of wire used on the coils
and the spacing between the rotor
and stator. GU If the rotor and
stator are too close, distributed ca
pacity will be increased and tuning
will be broader. 90 Connect the
windings in parallel
Questionable plus and minus
signs are indistinct on my storage
battery. How car ! determine the
correct terminals?-D. T. Y. Answer
The polarity of the battery can
he determined by placing wires lead.
ing from the terminals in a glass
| or salt water. Do not let tho
wires touch each other. One of
the wires will turn gray and the
other will be much darker. The
lighter of the two terminals is the
negative side of the battery.
Question-Why is it that on a
"B" battery control switch every
other point is dead" that Is, no
connection is made?-F A. Answer
If the arm of the multiple point
switch came in contact with two
live" points the cells between the
two points would be short circuited.
With every other point dead"
there Is no possibility Of a short
circuit.
Question-Win a loop receiving
set work on a veranda which ID
screened on all sides with copper?
F. G. Answer-If the screen 10
mounted on wooden frames IL il
not likely to cause any interference.
II it does and the screen is large
enough, make a connection with
the copper and use it as an
antenna.
Question-what is wirit?-C. v.
Answer-Wirll is No. 10 round cop.
per wire covered by a coating of tin.
Unlike the ordinary copper wire,
Writ is hard but is not springy,
because of special temper. An
insulated covering of linen is placed
over the Writ. 1t is used for wiring
radio sets.
Question - Where are stations
WWAB and WWAC? (2) What is
the power of each and wave lengths?
S. E. Answer-WWAB, Tren-
ton, N. ]. WWAC, Waco, Texas.
f2yWWAB, 10 watts. 226 meters;
WWAC. so watts, $50 meters.
Question-Is there any danger of
an antenna being struck by light
ning?-C. D. P Answered. athe
antenna is properly equipped with
a lightning arrester or lightning
switch which leads heavy stats
charges direct to the earth, the
antenna Is no more likely to attract
lightning than an overhead tele-
phone or electric light wire.
Question-What is meant by the
capacity of vacuum tube?-D. A.
Answer-Tube capacity is con.
dencer effect between the grid and
plate of vacuum tube The i'm.
portance Of this capacity is large
at high frequencies, but is Of less
Importance as the frequency is re-
duced
Question--Will batteries last longer
If connected in parallel instead of
series? (2) Should the rheostats he
adjusted when tuning? The tubes
are WD.II. (S) Will six volt storage
battery tubes give greater volume
than a WD-H?-C. II. Answer
Yes. (2) Yes; but not above the
point where the set begins to howl.
(0 Storage battery tubes give slight
ly greater volume than dry cell
tubes.
Question: have single circuit
receiver. Why is It that I must
tune the set for distance stations
and then hold my hand near the
dial Of the condenser in order to
hear the music? ~ What can I
do to correct this fault?-M. NJ.
Ahswer-the effect is known as
body capacity" Interchange the
wires connecting to the variable
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