FRIDAY
380 Meters
.——Tlme signals.
m.——Stock market rc-
:4. p. m.—-—Pr.pduce morket re-
'45 p. m.—-Weather forecast.
on p.m!n.—31usic and talk, “The
Easter Parade, " Paul Brown.
E! p. m.——Produce stock market
tions: news bulletins.
30 p. KIN—Children 5 program.
:85 p.m TIL—Health talk.
':40 p.111 m.—-Address, "The Hu-
'0 Movement," by N. J. Walker.
’45 p.m m.—Radio drama "Pierre
3110 Plains," presented by WGY
wry—N. Y. City—405 Meters
30 p. m.—-Ellsworth B. Morse.
- -e: Herbert E. Rector, tent.
:50 p. m.——“lncome Taxes," by
8:00 p. m—Ellsworth B. Morse,
baritone: Herbert E. Rector, tenor.
s: 15 p. m.——-—Francis Kirsch. so-
prano.
8: 30 p. m.——"Work of the New
York Assembly," by the Honorable
Julius Berg.
10:30 p. m.—-John Doherty, barl-
tone.
. . “UL—N. Y. City—455 Meters
12:10 p. m.—-Friday noon hour of
music.
1 p. m.——-Hotel Ambassador Trio.
2 p. m.—-New York Board at edu-
cation program.
3 p. m.——-Hotel Astor organ recital.
4 p. m.—-—Eiinor Gunn's fashion
talk.
4:10 p. m.—-Vivian Marlowe, lyric
soprano.
4:20 p. m.——Wov}en Lawyers' As-
sociation.
4:50 p. m.———Arts and decorations.
5 p. m.—-“The 'Larger Aspect of
Interpreter.
6: 15 p. m.-- “Systematic Psyched-
ogy, " by Dean James E. Lough.
5:39 p. m.—Federal ' and state
agricultural reports; Farm and
.Home reports: closing quotations or
the New York Stock Exchange; for-
eign exchange quotations; Evening
Post News.
7 p. ..m.--Carl Temple's Radio
Boxing Lesson for Boys.
7:10 p. m.—Leonldas Leonardl, pl-
anlst. .
7: 45 p.
topics.
8 p. m. ——‘Mildred Delma. soprano.
9 p. m.-—Concert under the aus-
pices or R.. E. Johnson; Carmela
Ponselle. soprano: Frederick Gun-
ster, lyric tenor: Edward Tankow,
basso; Rudolph Bachco. Molinst.
10:30 p. m.—-—Danco program by
Alamae Hotel orchestra.
\VRC—Washlngton, D. C.—
409 Meters
8 p. in. ——Fashion developments at
the moment.
8: 10 p. m.——Song recital. by Ar-
thur McCormick. baritone.
3:20 p. m.-—"Beauty and person-
ality," by Elsie Pierce.
3:25 p. m.-—Current topics.
3:35 p. m.—-—Plano recital, by Ethel
Grant.
2,,ngLA
u-v
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FRIDAY,APRII.‘ 11, 1924.“
Wall ltrest. '
4 p. m.--—Song recital. '
5: 15 p.112, rn.-—Timo signals and urea-
ther forecasts.
6 p. m.—-'—Stories and songs for
Children by Peggy Albion and Mary
Frances Glenn. , ‘
WEAF, New York City (492 meters)
11: 00 a. m.——Musicsl program.
11:10 a. m.—-“The Roses in Your
Garden" by Leonard Barron._
11:25 a. HL—A Lesson in Swim-
ming by Captain Mills.
11:50 a. m.—Consolidated Market
and weather reports.
4.00 p. m.——George O'Brien, bari-
tone.
4. 15 p.xn
pianist.
4. 30 p. to .—-George O'Brien. bsrio
tone.
tin—Helen .Ienki Dietrich,
'4. 45 p. m.-—-Belen Jenk- Dietrich
pianist.
5:00 p. m.—"Children's Hour"
stories.
7:80 p. Ina—Daily sport talk by
Thornton Fisher. ‘
7. 40 p. m.—Cari H. F. Von Lautz,
pianist.
8: 00 p. m.-—"The\Happiness Boys"
—Bllly Jones and Ernest Rare.
8: 30 p. m.—Music by an Instru-
mental Trio.
8: 40 p.111 tin—Talk by Moder A. A.
Siam m; "llnl-L—A
ways Safer for Motorists."
8:50 p. sir-Music by an Instru-
mental Trio.
9: 00 p. m.-—”Astor Cortes" bodice
Orchestra.
KDKA, East Pittsburgh, Po...
(826 Meters)
9:45 a. TIL—Union Live Stock Mar-
ket reports.
11:55 as.
balls.
12:00 lib—Weather forecast. Unit-
ed States Bureau of Market Reports.
, 12:20 p. m.——Lenten Services.
6:15 p. m.~—-0rgan recital by Lu-
cile Hale.
7:15 p. m.-—Sunday School lesson.
' 7:30 p. m.’—Feature.
7:40 p. m.——Nationsi Stockman
and Farmer market reports.
8:00 p. m.——Radio Boy Scout
meeting.
8: 30 p. m.——Coucert by the King-
haw Entertainers.
9: 55 p. m.-—Arllngton time sig—
nals. “'eather forecast.
KY“; Chicago 11]., (588 Meters)
9: 30 a. m.-—Lnte news and cum
ment of the financial and commer-
cial markets furnished every half
hour during the twenty-four.
11:35 a. m.—-Table talk by Mrs.
Anna J. Peterson.
12:30 p. m.-—-"The Progress of the
World."
6:00 p. m.——Spanish
Prof. A. A. Braschl.
6:30 p. m.—News. financial and
final markets. Dun's Review and
Bradstreet} Weekly Review of Chl-
cago Trade.
6:83 p. m.-—Talk.
6:45 p. m.—-—Chlldren's bedtime
story told by Walter Wilson.
7:00 p. m.—-Dlnuor concert.
10:00 p. m.——hildnight Revue.
“'82, Springfield, Mas...
(337 Meters.)
. 11:55 s. m.——Ariington time sig-
nals; weather reports; Boston and
Springfield market reports.
6:00 p. m.-——Dlnner concert by the
WBZ Orchestra.
7:00 p. m.——.Dramatlzed story.
7 :30 p. m.->Bedtlme story tor the
kiddies.
9: 55 p. m.——Arllngton time sig-
nnls.
10:00 p. m—Rocltsl by Harriet
C. Jenny. messo soprano; 121.. Jenny.
violinist.
“OR, Newark, N.J ., (405 meters.)
2: 30 p. m.—-Ben Friedman Enter-
tainers.
3: 00 p. m.--Mlss Joan Ruth, col-
oraturs soprano.
8:15 p. m.——Bartlett
well knoun tenor.
, 8: 30 p. m—Ben Friedman Enter-
tainers.
m.—Arllugion time sig-
\
lessons by
Simmons.
6:15 p. m.——Agnes Leonard in
songs for the children.
6:30 p. m.~—"Man in the Moon
stories for the children."
7: 00 p. m.-—-—Wllllam Mouser and
“Youth and Beauty." musical pro~
gram {or children.
7: 20 p. m..——Prcr Charles L. Dur-
ham in "Greetings from Cornell." '
WGI, Mcdford Hillside, Muss”
(860 Meters.)
12:00 Noon—Music.
12:40 p. m.-New England weath-
er forecast.
12:45 p. m.—-—Closlng Reports on
Farmers’ Produce market report.
5: 30 p m.—-—Closing Stock Market
reports. Um Stock Market reports.
5: 15 p.m m.—Code Practice.
6: 30 p. in. --Meeting or the Ami-ad
Big Brother Club.
7: 00 p.m .‘Boston Police reports.
7: 80 p. m..—1 Selected verses by
Mr. Charles 1.11. Wagner. 2.-—Red
Cross Talk by Henry Copley Green.
3. Tufts College Program.
, Engaged.
(Exchange):
Mord Ber
Gsyboy—Why did you leave your
TOILET SOAP 5c m, pm“,
Planta's 13 Fair stenogrupher (blushing)-——1
was caught kissing my employer, sir.
Gayboy—Er—um—you can start
in tomorrow morning. '
WHEN LOOKING FOR QUALITY
GROCERIES AT THE VERY LOWEST
PRICES STOP AT THE ORANGE Am
GREEN STORE.
i
Simple RF. Amplifier Uses
Recently we described a radio
frequency amplifier or simple c911-
, sanction, and gave details for build-
ing the s t. That outfit will give
good resu ts when properly handled,
and represents a low—priced set
which will not dent the tan’ 3 pocket-
book too much. However, there
are many persons who have some
instruments at hand, and want. to
use them if possible rather than in-
vest in new apparatus. “With this in
mind, we will today discuss the
building of a radio frequency ampli-
fier which is not expenshe and has
given more than the usual signal
strength.
The circuit is shown in Fig. 1. All
the tuning is done with two val-lo.
meters. and the hook-up introduces
nothing difficult. The elimination of
a series condenser in the antenna
tuning circuit. and the method of
hooking up the tuning variometer
“A." are not according to usual prac~
tice, and deserve a word of men-
tion. A two-told gain results from
this arrangement. First, we~ get
closer coupling to our antenna. so
that signals will usually be stronger
than it a series condenser were used.
Second. by eliminating the series
condenser, we introduce the antenna
resistance directly lmo the grid cir-
cuit of the amplifier tube. which
tends to have a stabilizing effect on
the tube. Most radio frequency am-
plifiers» accomplish much the same
result either by a. potentiometer
across the "A" battery, or by put-
ting a variable resistance in the grid
circuit, as shown in Fig. 2. That is.
in most r. t. amplifiers, we have our
antenna resistance, and then in or-
der to make the set work well, we
introduce an additional resistance in
the form or the potentiometer just.
mentioned. In the set we are dis-
cuslng today, we have only the an-
tenna resistance, but we manage to
use this to .do much the same work
that the potentiometer does in other
sets.
It should not be understood that
the not is a non-oscillating ampll-
Two ,Variom‘cters
her. It will oscillate on most aeri-
als over 'most of. the broadcast range,
and for this reason care should be
taken in handling it to see that the
variometer “l" is always kept be-
low the oscillating point. Intro-
ducing the antenna resistance in the
grid circuit of the first tube did not
entirely eliminate the tendency to
oscillate; it merely reduced this ten—
dcncy.
As to the construction of'the set,
the diagram is self-explanatory. and
it is mostly a mutter Of the individ-
ual (an arranging the instruments to
please his particular tsstc. Note that
we use the parallel veriomcter. men-
tioned in yesterday‘s article. as the
tuning variomctcr. “A." The vario-
metcr "I" is left hooked up in the
usual way. No potentiometer is used.
A vernlcr condenser may be used.
as shown by the dotted outline. If
it should happen that the set does
not tune quite high enough to reach
the MIG-meter Class B stations. an
11 or 13 plate variable condenser
may be placed at this point, also. All
tubes will perform satisfactorily.
This set is not an ideal set in all
respects. Our gain l‘n signal strength
is male at the expense of selectivity.
so the set is not one to be used
steadily where local interference is
bad. In this connection. a. wave
trap will be of help. However. the
time when this little set_sits up and
makes itself heard is in the late eve-
ning, when the local broadcasting
station has shut down, and when
"ax" hunting is in full swing. A set
at this type located in “’ashlngton.
D. C.. and operating on an aerial
consisting of a single 45—foot wire,
has frequently brought in Chicago
broadcasting so well that but one
step of audio frequency was needed
to put the music on the horn. In
this particular case, UVZOI-A tubes
were used. Of course this reception
can not be duplicated under all con—
ditions, but it shows what can be
done with the outfit.
Copyright. 1924, by The American
Radio Relay League. inc.
HOW LOOp Aerial
Picks Up Waves
By CARLTON E. BETLER
Radio Engineer.
Reception on a loop may seem to
v
be mysterious. Bringing in voice
and music with the aid or an out-
door aerlai seems to be tangible
enough. yet it seems lncrcduluous
that a few turns 0: wire wound on
s wooden frame. and located in the
same room, can operate a. receiver.
The operation of a loop aerial is
a little different in principle to that
of an aerial. An aerial consists of
a conductor suspended above the
earth and connécted to “earth
through the inductance of the re-
ceiver. This gives 9. condenser et-
tect that you do not have in the
loop type or serial.
The loop consists of a single con-
ductor wound in the form of a coil.
' This is merely an electrical induc—
tance. With both types or serials
the radio wave cuts the wire and
induces a current in them.
On loud signals it is possible to
completely remove the serial and
ground connections from the re-
ceiver and still hear signals. This
is on account of the inductance oi
the tuner or the receiver acting as
a loop antenna and picking up the
energy. in reality having a current
induced in the windings due to the
incoming wave cutting the conduc-
tors.
The incoming wave will cut the
wire on the nearest side of the loop
s. traction of a second before it cuts
the wire on the other side of the
loop. The induced current on the
one side of the wire will then be
out or phase with the current in-
duced when tbp wave cuts the wire
on the other side.
This will cause one and ot the
loop to have a. positive maximum
while the induced current in the
other end of the wire will have a
negative maximum. One end or
the loop is connected to the grid of
the first tube and the other end is
connected to the potentiometer. or
to the positive or negative A bat-
tery line, depending on the type of
circuit you are using.
The incoming wave cutting the
sides 01 the loop will thus induce
a current. which, when introduced
into the receiver, will be detected
in the usual manner. The portion
of the wire which is horizontal to
the incoming wave will contribute
nothing to the execuve current in
the loop circuit.
\Vonld Sam-agate the Gifted
The National Society for the Study
of Education has recently been ap-
pealed to by eminent leaders in
education to foster s. movement to
give more attention to the specially
gifted, pull. 0! recent years grea-
tcr attention in proportion has been
given to backward or subnormal
children. -’
Edison‘s Diet Nearly Ideal
Spinach. tomatoes, carrots, sar-
dines and milk form the diet of
Thomas E. Edison, electrical wizard.
Emminent physicians have pro-
nounced this almost an ideal diet—
in tact ideal but for the inclusion or
sardines. which they generally agree
upon as being only for those with
good digestions.
the articles.
hand embroidery.
Art Need 19 Work
_Ne:w' designs-«in Bed Spreads, Card Table Covers,
Buffet Sets, Centers, Scarfs, Pillows, Towels, Chil-
dren’s Dresses, etc, in pleasing and ”fascinating as-
sortments; also all the needed flosses to complete
OUR ART DEPARTMENT is the very center of
interest 111 this city for lovers of the beautiful in
a
TheN E
Ryan CO. 3
Jones’, Pillsbury’s, Gold Medal Flour 95c bg.
Granulated Sugar . . . . . . . . . . . . 8 1-29 lb. ;
Fancy Maine Potatoes . . . . . . . . . . . . 38c pk.
Best Butter 45c lb.
FreshEggs........ ......2‘9cdoz.
QuakerOats....... ......9cpkg.
‘ Ogrcanoiwmm ... ... 19%
Red Salmon,‘tall can . . . . . . 23c can
Quaker Oats, large .
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Uneeda Biscuit . . . . . . . . . . 5c pkg.
cocoons
Marshall’s Kippered Herring . . . . 25c can
'Fancy Maine Corn . . . . . . . . . . . . 13c can
Chipso, large package . . . . . . . . . . . . . . . . 220
Japanese Toilet Paper . . . . . . . . . . . 3 for 25¢
Del Monte Sliced Peaches . . . . . . . . . 15c Oan
Libby’s Sauerkraut . . . . . . . .
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SilverLakeBeets 15ccan
Seeded or Seedless Raisins
Extra Large Grape Fruit . . . . . . . . 3 for 25c
United States Store System
83 Washington St.
llcpkg.
(Successor to A. F. Beckmann)
56 SO- MAIN ST. SOUTH NOR‘VALK
‘ OPEN SATURDAY RV'ENINGS UNTIL 9:30 P. M.
'PRE-EASTER SALE
Corsets, Hosiery, Gloves, Brassieres & Underwear
—SPECIA1.LY PRICED—
$3 FRENCH KID SILK VESTS
GLOVES :— 3
$2.49 Peach, O§h§dtgfhgta Flesh. g:
NOVELTY iii;
GAUNTLETS C%§§%{SE§““ é
$1.00 $1.00 & up E
SILK HDSIERY BRASSIERES :-
Newest spring shades. For all figures 5;
95c “P
CHILDREN’S sox
29c 39c 49c
Large assortment.
PURE THREAD SILK
run. rssmounn
HOSIERY
$1.95-
All shades in vogue.
49c 8“"
SHADOW BATISTE
STEP-INS
- 75c
Reg. $1.00. Peach and Flesh.
RIBBED VESTS
4 ‘°' $1.00
Reg. 390. Sizes 36 to 44.
NEW SPRING FASHIONS IN
WOMEN’S: FOOTWEAR
Designed fresh fOr Easter and the spring days that
follow. They completely satisfy the feminine long-
ing for ultra-smartness 1n footwear.
Smart new styles In grey, fawn, patent and satin:
SILK HOSIERY TO MATCH.
South Norwalk
81 Washington St.
:t—SI'GRE OPEN SATURDAY EVENINGS—t:
~BROWER & MALONE FEED (30..
48 mm mm NORWALK. CONS.
FERTIIJZERS for FIELD, LAWN and FARM
The“ MotorrspeohisndaeuerslcropnolsoSheep
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' F0 SEEING
Norwalk Chronicler