Atlanta tri-weekly journal. [volume] (Atlanta, Ga.) 1920-19??, 1922-05-30
RADIO QUIZ

1T have a vacuum tube circuit
without application, but do not
get anything, not even static.
Would regenerative circuit work
without ticker coil? Which would
you advise me to buy, a variometer
or tuning coil? What is ticker
coil? Will any other coil take it's
place? | have an aerial 100 feet
long and about so feet high, using
two strands of copper wire. j.
r. NJ, Triton, Ga.
Answer. You probably have fail
ed to follow directions in assem-
bling your set. You should go over
it carefully to see that all connec-
lions are properly adjusted. 1t is
| impossible to get regeneration with.
out ticker coil. We suggest that
you use a Vario-coupler. Variometer
inserted in the plate circuit will
serve very we'll as a ticker coil.
The dimensions of the aerial are
correct.
eff I wrap my tuning coil with
non-insulated wire, what kind OF
enamel must I paint it with after
it has been wound? In winding the
tuning coil, my wire gave out. Can
[ join these wires together, or must
| the whole be one piece of wire? Is
No. &c enameled wire better than
| No. 26 silk OF cotton covered for
| the coil?'-K. S. MGR, MOntgom-
cry, Ala.
Answer. Better results can be OBJ
tanned if the wire used for the tun-
ing coil is not vanished. DO not
use bare wire unless you wrap some
I, hot
| turn Two pieces of wire may be
joined and used for the coil pro-
vided the connection is well sol
dered. No 26 silk or cotton-covered
wire should be used.
"Please advise Inc if the inclosed
! hook-up is correct. Should [ have
the variometer between the grid
| leak and vacuum tube, or is it best
| to leave it where it is? Does it mat
! ter to which side of the filament
the negative and positive of the
"A' battery go? Would it help to
! phones? Can I use No. IS cotton
covered wire for the aerial? A
friend says the free end of my
aerial should be directed toward the
| station from which l am receiving.
| Is he correct?''-F. Med, Madison,
/
| Georgia.
ARswer-Your lookup, the ever
popular Armstrong regenerative Cir
| cult, is a good one. The variometer
| should be left in its present posi-.
| ton as shown in the diagram. Elk
! pertinent by connecting the A bat
! terry once each way to determine
which is best, as this depends upon
| the kind Of tube used. A fixed con
denser shuntcd across the phones
would improve the set. No. Is cop
| per wire is rather light for an aerial
as it may snap in the wind; other
wise it is satisfactory. Better re
suits can be obtained if the free enc
of the aerial is pointed toward the
| broadcasting station.
"Ts the inclosed diagram of my
radio set showing the hook-up cor
rect? Will wire like samples 1 in
close be suitable for aerial, ground
lead-in and tuning coil?"-L. N.
Milledgeville, Gu.
Answer--The hook-up Of your sci
as shown by the diagram is cor
rect. Wire the size of samples may
! be used as specified. Be sure to sol
der all connections in the aerial
and set.
with an aerial of a single strand
Of wire $50 feet long and as feet
high at one end and 80 feet at the
other, and a set wired as shown il
the inclosed diagram, using two
slide tuning coil, fixed condenser
2,000-ohm phones and crystal de-
tectOr, is there any reason why this
set should not work ?"-J. T. Wood
ruff, Grayson, Ga.
AnSWer-The set is wired cor
rectly according to the diagram. Yot
should be able to hear local sta
lions over this set, but you will no
be able to hear concerts broadcast
by stations more than fifteen tt
J tWcntY miles aWaY