The Washington times., 1924-04-17
THE QUESTION BOX
Two Sets on One Aerial.

NJ. EiShman-ASa constant reader
Of your questions and answers
would thank you to advise me il il
is possible to operate two receiving
sets in two different homes from
the same aerial? If not advisable
please tell me what difficulties
would arise by so doing? Answer
It is possible but not advisable. If
one set were of the crystal type
some satisfactory result could be
obtained, but if both are to he
of the regenerative tube variety
the tuning of one set will affect
the signals of the other, throwing
any adjustments that might have
been made out.
John S. Weigert-I have an At
water-Kent five-tube set. Is the
battery being slowly discharged if
the rheostats are left on after the
switch is turned off? Does it do
any damage at all? Answer-After
the switch controlling the A battery
circuit is turned off there is no
current flowing in the circuit even
IL the rheostats are left on. In
your set the current may be
turned off either by means of the
switch or the rheastat.
Stewart Burckkhardt-I am con.
templating building a two.tube Erla
duo reflex circuit. Do you think
this set will bring in the results
claimed for it? I wish to have a
loud speaker on boat about
thirty feet long and would like to
know if the eerial I have pictured
per inclosed will work? Answer
Considering the amount of appa-
ratus that is required for the con.
struction of this set 1 am sure you
will feel satisfied with its returns
In amusement OF course as to
distance you understand much o.
that depends upon the location of
the set, which in your case, being
on a boat, ought to give good re-
suits. The aerial as you have
drawn it will work nicely, but
owing to its shortness yOll may
have to use an additional loading
coil to bringg in the higher wave
lengths.
AL Schol-Iis litzendraht wire bet.
ter than solid wire for winding a
radio frequency transformer? What
is the best crystal rectifier? Is ii
advisable to add one step of choke
coil amplification to two.tube
reflex set, making three tubes alto.
gether? Answer-The gain is hard.
ly worth the difference in cost in
this case. The best natural crystal
Is the galena. One step of impe.
dance coupled amplification will be
decidedly worth while in this cir,
cult.
Edward Banks--I have a one.
tube set and get some distance
therefore / ask you to aid me in
location Of the following stations
FACT and ,2AS, which were broad
casting on a wave length of 1876
meters. Answer-The two stations
you mention are amateur transmit
ting stations and are located in
New York city.
Samuel j. Shappiro-I would an
preciate it If you would advise me
If there Is station located in Mas,
sachusetts with the call letters OF
WBBZ. 1t sounded to me as if il
was some storage battery concern
broadcasting.- Also is station XIX
independence. Mo-, or Kansas? An.
swer-It Is quite possible that the
station you heard was, WBBG, the
g sounding somewhat like z over
the radio. This station is located
in Mattapoisett. Mass. Station
XIX is located in Independence
Kan. IA, tn.,..
A. RauschA Please tell me which
Is the best ground. Water pipe, gas.
pipe or radiator piper AnSwef-
The best ground is 'one connected
to the water pipe. =. l
A.. FreeFnan-What station signs
itself as some storage battery com.
panyH. Answer-The Willard Com,
Pany in Cleveland, Ohio; station
WTAM. - :"