Atlanta tri-weekly journal. [volume] (Atlanta, Ga.) 1920-19??, 1922-05-06
PEGGY JOYCE SAYS SHE
IS THROUGH WITH MEN


with a single vacuum tube detec'
tor, 1000 ohms phones, variable con-
denser, 21-plate, .OoO5 MID, and a
loose coupler? 2. Would I need a
vario-coupler? 3. Which is best
to use with a vacuum tube, loose
coupler or vario-coupler? 4.
Could I get Pittsburg with this
set?"-J. w, 95 Kelly street., At
lanta.
Answer. 1. Yes. 2. Vario-coup-
Ter is more compact than a loose
coupler, but is not needed to hear
WSB. 3. There is little difference
between them electrically. a. You
should add two steps of amplifica-
ton to insure getting concerts from
KDKA.
81. Will telephone wire run
ming parallel with an aerial at a
distance of 200 feet affect the re-
ception of radio signals? 2. Can
No. IA bare copper wire be used
for lead-in, or must it be covered?
3. Can the ground switch be placed
near the instruments, running the
ground wire about fifty feet to
ground outside? 4. Can dry cell
or Ford storage batteries be used
while the storage battery is being
recharged at service station? 5.
Will one b battery be sufficient,
or is it necessary to have two? 6.
Where should the lightning arrester
be connected; what does it COST
G. F., Woodstock, Ga.
Answer. 1. No. 2. No. IA copper
wire, either bare or cotton covered,
is satisfactory for aerial for receiv-
ing set 8. Fire insurance regula.
tions require that the switch he
placed outside the house. 4. Either
dry cell or Ford storage batteries
may be used to replace your regular
storage battery temporarily; the
dry cell battery, is more expensive,
however. 5. One block of "B''
batteries having % IL volts is suf-
ficient for a detector tube. 6. The
ground switch serves as lightning
arrester
81. Can I use No. 26 double cot
ton covered or bare aluminium wire
painted with shellac for the tuning
coil of the So set described in a
recent issue of The Journal? 2.
Can I use house phone receivers
with my receiving set?"-H. Med,
149 Lee street, Atlanta.
Answer. l. Yes, either No. 2G
cotton covered or shellac treated
aluminium wire may be used for
tuning coil, provided you do. not de-
pend upon a sliding contact on the
wire, but use switch and contact
buttons. 2. House telephone re
ceivers are not satisfactory for use
with radio sets.
"Is the inclosed piece of wire too
small for winding on vario-coupler
and variometer? 2-Do stations WSB
KDKA, WWJ, WIZ and KYW
broadcast music on $50 meters and
weather reports, etc, on 4S5 meters:
3-How many turns of wire should
be put on the primary and secon'
Diary of variometer? 4-What diff.
ference is there between a grid and
plate variometer? 5-Would I get
better results by shunting a fixed
condenser across phones? 6-What
is the receiving radius of a vacuum
tube detector set having no ampli
tiCation?" - "Radio-Vamped," Madi
son, Ga.
Answer: Yes. Be sure to sol
! der all connections carefully. 2
Yes, complying with government
regulations. 3-Eighty turns, tap
ped off every ten turns on the pri
| mary fifty turns on the secondary
| Grid Variometer requires heavier
wire and fewer turns than does the
| plate Variometer. 5-Yes. 6. ReceiV
| ing radius Of q single tube set, with
| out amplification varies, depending
upon atmospheric conditions anC
| construction of the set; but you gen
orally can hear over a distance Of
about 100 miles with a set of this
type.
Gould I buy a complete receivins
set, including aerial, for So? viii
have to pay for electricity? Can
get one in Atlanta? How much viii
it cost me to have it installed?"-
| George Finley, PSI Vine street, At
! lanta.
Answer: Crystal detector sets, com
! plete, sell at prices ranging from
$3.50 to $50. If you build a crysta
detector set yourself, it should no
cost you more than So if you follow
| instructions printed recently in thi.
! department. There is no charge fol-
| electricity. The necessary materia
or the completed set may be bough
| from local radio dealers; you should
be able to install it yourself, as it i.
very simple.
Ito get good results from a r.
magnavoT, is it advisable to use tw,
fiVe-watt transmitting tubes in place
of two 201 simplifying tubes? 2
| What voltage ana make of trans
former would you suggest using? 8
What h0ok-up should l use to heal
distant "hams" working on 200 me
tiers? am able to pick up signal,
from broadcasting stations, but have
not heard distant amateur stations
l am using a small aerial havine
four wires, 30 feet long and 25 fee
high. "A. r. B., Triton, Ga.
Answer: Yes. 2. The proper
transformer to use is Thordarson
Use $50 volts up to $50 on plate
! and ''C' battery and potentiometer
/ 3-The aerial of your set is too
| short and too low for the reception
81 signals from distant amateur sta