Radio Secret
of War Bared
Jf Automatic Receiver Designed
j to Help A. E. F. Copy Ger
man Messages.
By FLOYD MARSHAL!,.
j The signal corps operator behind
j the Amerlean lines let go an oath.
"Ri'if a moment before he was "copy
V Ing" the enemy messages. Then right
'®3rr^Ria midst of a sentence came—
silence. A hasty examination of the
radio receiver showed everything in
order. A rapid bit of tuning, and with
It ihe truth was flashed. The Ger
man* operators had changed the
wave-length! Enter a new problem,
how lo keep up with the radio sta
lking behind the German lines.
They sent for R. E. Thompson a
few days later In Washington. For
Pershing had so ordered. And what
Thompson was aide to do forms one
of i he most Interesting stories of the
world war. Outwitting the enemy Is
Ilie chapter heading.
Necessity Is truly the mother of
Inyen tion and In this rase the Inven
was an Interesting device manu
>*Jca?tiired by the Wireless Improve
to-Jhent company, which Is now a sub
hiflipry of the R. E. Thompson Radio
oration. This device was an auto
Rwiple or uncontrolled radio receiver
JJtjfresjgnrd by the Wtco at the urgent
JG'Njfchest of the American expedition
wsj(ay forces to enable the operators of
signal corps In France to keep
S’- trail, of the radio stations operating
Behind the German lines.
was found to be extremely im
: jSfijtolant to listen in on the German
j ifig^Cations but the German engineers,
j^-iAkmg advantage of the considerable
which they knew was required
tune the ordinary receiver to an
-tgfJgjHtar or different wave length, pro
fcsjqeded to rebuild their transmitters
that they could he instantly
^'.switched to different wave lengths
,*»>arid by using combinations known to
*m tlielr receiving operators would
njmnge a number of times during a
to anessage. American operators, listen
35?j5ftr In, would hear only brief and im
^.•Jjjfelllglble parts of the message. The
jffijtflnerlran, moreover, would not know
X’sfaere to look for a station that had
jfL’W^pged and usually by the time the
tion had a*ain been found on the
«SS>Ket ver tuner another change would
5$$'* been made.
Pershing AsU* Action.
this condition became sevi
Ie Tt. Krumm. who was in
i ge of the radio division under
Ttussell, remembering that
heard It. E. Thompson, now
t of the Tt. K. Thompson
Co., and then chief
of the Wireless Improve
company, speak of an automat
tuner which he had Invented,
General Pershing to send a
to the chief algnal officer
Washington asking him to get in
with Thompson and arrange,
that the Thompson auto
tuner be Immediately manu
and shipped to France,
was forthwith called to
stiingtnn and accepted an order to
and build these sets for the
tar wavelength range requlr
the army.
an exceptionally abort time
recelvera were constructed and
on their way to France where
put to work immediately
track of the German "aklp
at at Ion a.
I'nl-ronfrol Receiver.
an Ingenious arrangement,
ta able to cause the re
tuned to all tha wave
let) to 4,000 meter*
d over and over again
ig of a single crank. Its
■d to this control a small
strur.ted electric motor
the receiver to constant
tgh the range of wave
200 to 4,000 meters. And
rave-length waa passed
y 10 second*,
gnal waa being received
m was. of course, atop
osltlon corresponding to
une. When the station'*
ipeared a button wa«
wlthlrr 10 seconds the
would be found at some
■ngth when the mechan
In stopped until anothci
order.
ig In purposes the motoi
id to constantly drlvi
nechanlsm over the en
that regardless of wlial
a German station dc
»n upon, the A meric* r
re on to hint within 10
at then on thev skipped
ipped. The joke of the
that the Germans kept
ig the whole of the war,
•r* being under the lm
they were getting away
wing to the extreme
hr surrounded the inanu
d delivery of these acts
the fart that they had
>d did not come out until
e war was over.
'^Hound Corners of Wires.
.w aharp bend In a wire not only
a Rood point for enerRy to be
ra.tfcited from, but It aleo chanRes the
reafirtance of the wire. All wire*
rhould he led dlrertly to the proper
terminal without bendlnR. If poeelble.
Where It 1* neeeaeery io bend a wire
et rlaht anRlee, tiae round nose pliers
er soma other tool to make I he curve
ft.larRe one.
w indow Top for Lead-in.
li-'U often better to piece n lead In
l#t t'tie top of the window, where It
will he nut of the wav end there will
danger of disturbing It bv open
~ Uig {he window. It Ip better protected
4 ftOuf ibp window In ihlp manner, and
i Ue lead In doe* not show In froijt of
the window.
V
Weakness of Most Reflexes Overcome in Set That Is Selective
B> WIIJJ \M A. S( HI l)T, Jr.,
A reflex set that will tune out one
station and not cause interference
with another station operating on a
wave length close to the first is some
thing to be looked forward to. Selec
tlvity often can be had with reflex,
not by decreawing the volume but by
increasing it. When the selectivity is
improved ami the volume increased,
however, true efficiency is obtained.
Present day receiving sets employ
ing any form of radio frequency
(tuned R. F.) usually combine several
quite a few changes made before the
set will be in proper working order.
On account of this latter reason we
are presenting a novel method of wir
ing .so that it "ill Ik* easier for the
builder.
It may have occurred to many build
ers of radio sets after they have fin
ished wiring with heavy 1ms bar to
reverse a few transformer leads or
try placing a certain lead at another
point of vantage to see if it will in
crease the signal strength. If it has
occurred to them they undoubtedly
Now comes the secondary circuit,
and one must take great care here,
for a mistake will end in complete
failure. The end of the secondary
nearest the tickler rotor is connected
to the fixed plates of the variable
condenser ami also to the grid post
of the first tube socket. The other
end of the secondary is brought to
the rotary plates of the variable con
denser and to one end of the audio
transformer. The other end of the
transformer goes to the “A" minus
lead. 0
end of the crystal detector, while the
other end of the crystal detector Is
connected to one side of the primary
of the first audio frequency trans
former, the opposite side of the audio
transformer being placed in connec
tion with the other side of 1 he un
tuned radio frequency transformer.
(Reference should he made to the
s< hematic diagram from time to
time.)
Going hack to the second audio
transformer, connect a wire to the
vacant post on the primary side to|
In fact. It Is not h lmd plan to try
this condenser both In slid out of
the circuit.
Try Reversing I .rail".
The leads to the first audio fre
quency transformer should tie re
versed to find the heat operating
polarity. This Is very Important, and
when the correct wiring for the whole
row of transformers is found the
frail wires should lie replaced by
slrong bus bar.
If it be not top late, we might
The schematic diagram may r.ot l>e as a simple as that for a one-tube set, hut it shows every connection clearly. The sensitizer coil, plus the rest of
the radio frequency circuit, is similar to the wiring of an ordinary three- circuit tuner.
\ aria hie condensers so that they can
he controlled by one shaft, thereby
bringing the number of controls down
to one. Such a practice is a right for
medium, results, but beyond that it is
a failure. Ix>cal stations can nearly
always be tuned at the same dial
reading when more than one variable
condenser is used. Therefore, if lo
cal reception is the only object in
view, all the variable capacities can be
coupled to one shaft.
Tuning in distant stations with all
of Ihe condensers controlled by one
dial is quite a task, since you cannot
possibly get resonance unless each
one of the radio frequency circuits Is
tuned separately and carefully. Of
course, it is another thing when each
coll is designed for use with a special
condenser and all condensers in turn
connected up to the one shaft. Kveu
in this manner utmost efficiency is
not obtainable, because various ob
jects surrounding the coils and con
densers tend to prevent any stand
ardization of such units. On the other
hand, several prominent manufac
turers of radio equipment have
solved the problem to a certain extent
and can successfully operate several
variable condensers on one shaft, hut
as wan stated before, the utmost of
efficiency is not obtainable at the
present time.
Avoid Coupling Condensers.
It is seen, then, that in designing
the reflex set so that really good se
lectivity wdll be had one must not
couple the two variable condensers.
In this case only one is used and
therefore the set is actually one of
single control.
The receiver about to be described
embodies a special form of reflex
which is far more efficient than j*xt
the straight reflex set. (irenter seder
livlty is obtained, ease of control, and
greater volume is had with three
lubes.
All of the apparatus can be mount
ed on a 7x18 inch panel.
Acer*wary Part*.
A list of tha part* necessary for
the construction of this super reflex
eet follows:
One three circuit low-loss tuner.
One 23 plate .0005 mfd. variable
condenser (low loss type).
One Iron core radio frequency
transformer (Untuned). 1
Three low radio audio transformers.
One crystal or mineral detector
lflx»d preferable).
Three tube sockets.
Six binding posts mounted on rack.
One double circuit Jack.
One single circuit Jack.
Two variable grid leaks.
One battery switch.
Three 30 ohm rhenstate.
One .001 mfd. fixer! condenser.
One panel, 7x18 Inches.
One baseboard, suitable for use
with, 7x18 Inch panel.
Necessary dials, bus bar and sup
ports.
One knob to he used on sensitizer
shaft to match up with knobs of rheo
stats.
One cabinet. 7x18 Inches.
The panel should he laid out be
fore anything else Is done.
A piece of white cardboard the r\
art size of the panel Is procured. With
the aid of a ruler and compass the
panel template Is laid nut to suit th»
builder. A very good lay-out Is shown
In the drawing elsewhere on this page
The variable condenser Is mounted
In the center of the panel with two
of the rheostats on ths right hand
side, while one rheostat and the sen
sltlz.er control Sre placed on the left
hand side. The Jacks and hattcr\
switch are clearly ahown mounted
below the large dial In the center.
As soon ss the psncl template |
finished, fasten It to the front of 1 hr
panel by meana of elampa to prevent
them front marring the panel. Then
Impress the markings upon the face
of the panel with a center punch.
The baseboard Is mounted nr fast
ened to the panel first, following It
by the condenser and rheostats, fare
should he given to correct placing nt
the three circuit tuner. Tt la placed so
that It* msgnetlc field docs not take
In any part of the variable condenser.
The placement of the various trans
formers, tube sockets and other In
struments I* clearly shown III Un
drawing.
Novel Wiring Mrtlmil.
flnee sll of the apnaiatos |s |o
place the wiring should he started
In this case there are hound to he
spent a few hot. blue, smnkish min
utes trying to bend or stretch the
heavy connectors to their new posi
tions. In order to save this excess
energy and to be a Vile to reverse one
or all leads that can be reversed, the
set should he wired with No. 28 D. <
(\ wire. Of course, tills is only tem
porary and will be replaced, wire for
wire, witli heavy bus bar. just as soon
as the correct reversals are found.
Step by Step Process.
Following is a word diagram of the
reflex set. the schematic diagram be
ing shown at the bottom of tin* page.
t’onnect first witVi the No. 28 wire,
replacing later with bus bar.
From the binding post marked ANT
a wire is connected to the top end of
the primary « oil. Now run a lead from
t tie ]*ust marked <N I> to the other
end of the primary.
Before wiring the primary circuit
of the audio transformer one will find
It tnurh easier to finish up the plate
circuit of the first tube. From the
plate post on the first tube socket a
wire Is run to one end of the sensiti
zer coil, which is known as the tick
ler coil of the three circuit tuner.
Now run a lead from the other side
of the sensitizer to one side of the
radio frequency transformer. Continu
ing the wiring, connect a lead to one
side of the primary of the second
audio transformer from the other
side of the untuned radio frequency
transformer.
Ollier (minedIons.
As we transform our energy Into
tile secondary of the radio frequency
transformer let us also continue wir
ing litis part of tile set. 'i’he tup end
of the secondary Is connected to one
Above Is the front view, showing the panel layout of the Sohudt Reflev
set. Note the single control. Sets of the future will be designed along these
line*. ____
FOREIGN INTEREST
IN RADIO GROWS
Another problem which Is begin
ning to take on Importance with
radio official* and which may some
day he the basis of International com
plications Is the Increase In Interest
In broadcasting In f'anada, Mexico
and i'll ha.
The increased Interest. It la be
lieved. may result in an Increase In
the number of powerful broadcasting
stations In these three chantries. This
would either result In a lot of Inter
ference or else cut down the number
of wave lengths available to American
stations.
The entire wave length band (from
200 to 645 meters! heat adapted at
present for broadcasting purposes Is
occupied by American stations. In
order to prevent Interference these
stations are separated hy 7, *, 3 and
10 kilocycle**.
Obviously If powerful stations (of
700 watts or over) sre erected In
Canada or Mexico (hey must be placed
tin rtie same wave length ns American
'tatldll*. Because of the short dis
tance between tha countries, lnter
Yrence will lie hound to result.
Novel Yet Efficient Shaft.
A celluloid knitting needle makes
an efficient varlo-coupler or varloin- j
ntrr *h;»ft If hinted In bolllnjr |
; w*tfr It can 1><» In any *hnpc de
*lr#*d.
RADIO ANNOUNCER 1
TO KANSAS CITY)
Gere Rouse, "O. R .'* chief an
nouncer of radio biiiadcaatlng station
VVOAVV, Will go to Kansas city Son
day to be the guest of "The Merry
Old Chief," I,eo Fitzpatrick, Chief an
nouncer of the Knnsaa City Star
WDAF elation at the Kansas Clt}
Radio show in convention hall.
That newspaper la paying the ex
pensea of a dozen announcers from
all over the country, chosen by the
fans as the moat popular in the re
cent canvass conducted by the Radio
Digest.
George Hay of iVl.t, Chicago
I-anibdln Kay of WB8, Atlanta.
"Oawgla" and "The Hired Hand” of
WRAP, Fort Worth, Tex. are among
the Invited guests of the Star.
Loud Speaker Connections.
In connecting a loud speaker to th
set, It must b* don* with th* right I
polarity combination. Th* permnnen. !
magnet In th* apeak*r haa a fixed
fl*ld, and th* ctirr*nt which pa****!
through th* field roll* from th* **•
must be hi th* right direction, nth*,
wise It will produce a bucking elrctro
magnetic flrld and the speaker will
not function well. Regard!*** of the
exr*||«m<** of th* loud *penklng unit
it**lf unless th* horn I* designed sc
cording to correct acoustic principle*
;ind ha* ample proportions, the full
effect, of the *ignnl will be ln*t.
the binding post marked “B" plus.
This "B" plus is also connected to
the lower prongs of th^ two jacks. A
fixed mica condenser of .001 mfd. is
connected across ihe primary of this
audio transformer/
It hardly seems necessary to go
into word diagram for the rest of
the audio frequency amplifier, since
it is of conventional design, except
for the two variable resistances which
are shunted or connected directly
across the secondaries of the audio
t ra nsformers.
All of the grid return leads are con
nee ted together and In turn connect
ed to the filament circuit and then
to the “A" battery minus binding
jM»st. The other filament posts on the
three sockets are connected together
and then to the binding poets mark
ed "A” plus and “B ' minus. So much
for that.
A by pass condenser may have to
be shunted across the secondary of
the first audio frequency transformer.
stress that th* audio transformer
should he of the lowest possible ratio.
Recause of the use of a crystal de
tector, the clarity of this particular
set is as nearly perfect as any radio
set tested by this department.
in a pinch one rheostat ran be used
to control all three tube*, thereby
eliminating two dials from the panel.
Of course it is always best to have
a rheostat to control earh separate
tube.
As in the construction of all radio
receiving sets, the results obtained de
pend entirely on the quality of ap
paratus used in it, ami tills cannot be
advised any too strongly with this re
flex rereiver. Vse good transformers,
especially t lie untuned radio fre
quency transformer, whirh is of the
Iron core type ami should be of the
wry best quality.
'i'lie .*et when adjusted properly will
not be critical at all and will give
Mirprislngly good volume and *»e
lectivity.
INTERFERENCE
PUNISHABLE
Malicious interference with radio
reception of neighbors will be prose
» uted vigorously, according to officials
of the radio bureau of the Depart
ment of Commerce.
One such case has already devel
oped. The inspector at New Orleans
received a number of complaints of
interference from Knoxville, Tenn.
An investigation revealed that an
amateur was using an unlicensed
spark coil transmitter without a re
ceiver, which, be admitted, we* being
done for the sole purpose of creating
interference with a listener across
file street.
Am the action vvmm In violation of
the law. the c»se was reported to the
district attorney and came up before
Federal Judge Hicks. The amateur
pleaded guilty and was sentenced to
pnv a fine.
Cnder the low the penalty for op
erating an unlicensed transmitter is
a fine not exceeding IfiOn, and the
apparatus is forfeited to the govern
ment. The penalty for operating a
transmitter without an operator's 11
cense is $100 or Imprisonment for two
months or both. The penalty for mali
cious interference is a fine of $'*0rt
• >r a sentence of one year or both.
All 1 |* to Detrctor.
A vacuum tube regenerative set
using only one lube, will bring In
signals from nearly the same distance
as n set having an audiofrequency
amplifier. The amplifier serves to In
crease the strength of signal* brought
In by the detector tube, for the pur
pose of operating a loud speaker or
making the signals louder In the
phones
RADIO BUSINESS
BOOM IN CANADA
All previous Canadian sales records
for radio nets and accessories wer* |
surpassed duiing this years Christ
mas business. Assistant Trade Com
missioner T. W. Donnelly report* to
the Department of Commerce from
Ottawa.
The availability of the leading
broadcasting station in the 1'nited
States and the principal stations in
Canada affords local enthusiasts
great/pr scope for operation. The
rapid ndv.mi'f'Uient of the science in
the T’nited States is responsible in a
very lar^e measure for the rapidly
growing Interest In this country. Al
though the broadcasting stations in
this country are modern in every re
spect and have interesting programs,
the number Is limited.
Consequently the operator, as is
♦ rue the world over, experiments and
is not satisfied until he has connected
with a distant station In the 1’niird
States. Only on rare occasions is it
possible to tune in on Toronto from
Ottawa. This is due chiefly to at
mospheric conditions.
UNIVERSITY TAKEN
TO RURAL SCHOOLS
Manhattan, Kan . Feb. 13.—The
o.000 country schools of Kansas are
going to be radioir.ed.
A statewide campaign is being
planned for the equipment of these
schools with receiving seta so that
they may listen in on education and
other programs from station KSA(\
'conducted by the Kansas State Agrl
cultural college here.
Interference Eliminator |
What Radio Ultri Ha*a Baan Looking For 1
For tho«e who have had Interference Troubles thia R
new auKiliarj tuning devir# will trap out the un- I
desired atationa. I
Select Your Stations at Will
The sir is s® crowded with music snd 'nice* that
| the averat# set fa'ls to bring in the desired ate*
f FRKD W STEIN tines properly. The Rteinite Interference Eliminator
f, * shuts out local and other interference. You get one
station at a tlma, whatever ana you
want, and tan tuna It In loud and
rlear.
Improved reeulte with tuba er crystal.
f Try for yourself entirely at my risk
the wonderful Improvement thia In* i
expensive little device will make in J
ijj the receptioa of your apt. Sold on |
absolute guarantee of satisfaction or m
money hack and the greatest dot- m
Isr's worth ever offered the radio M
public. Improve* result a on both fl
eryatal and tube sets that use an
indoor aerial, outdoor aerial or light
socket . hut will not help a set using H
loop antenna. Clears up reception j§|
wonderfully and partially absorbs
Mfrc. F.».u. I JOG Mi. T
Tub. VI.. $13; U.f Dliluu MoB«T Back
Crystal Sot*. $6; Da Luma Crystal. j*ut (Ms Infarfaranca aliminator an
Sat, complata with haadphonaa, votir •#< and not# imanni tmprova
aarial and ffro«u»d. HO; 2 Tuba Sat. mrn« No tools nandad and but a mn
$16; 2-Tub# Ampllfiar. $1$. TRF.E mant • tint# raquirad to Install. Full
daarrlptlv# litarstura on raquaat .fractions with aach Instrumanf. Sint
ply rnnnaat with sat and follow <n»« .Mon* Raqulras no additional tuhas or
ha*tarias. You must ha pleased and Ha gh*ad or you *et money hark poomptU
! on your say so. II postpaid anywhere in H. » whan rash accompanies order
I has* two h a Atchison hanks wtll testify to my ral ability M'hanae Na
tional Rank. Atchison Savings Rank Ordac tod*) a dollar h II aill do.
STE1N1TF. LABORATORIES
Program for Krbn’.arv 2*.
Ih \mmo Inted Press.
WPG. Atlantic Cl tv (.'99 Hi: 8. re* Ital
9. romei t orcheM * n
WKKI. Huston (Silent).
WMAq. • hicsgo News (447 5> fi «c
(hestra. 8, Russell Pratt. Pi*-.| Daw. ' '
photologue; 9. rilii NK" tlltH
WON. Chicago Tribune Cl.'" 2): *'■ "t
Iran; i, 3". enaenible quintet; X, chorus.
If. dan* e. orchestra.*
wi.jt, Chicago (4 4 '.i 7 trip in 4 ue
trails: 7:20. national barn dance, II Hen
ala theater.
WKIJH i hlcago Post t .70): 7. « • ■ -•
b) . 9. dance, tending. vocal; II. or
pestr;* nnntr«. reading*
K YW, Chicago <.73' 4) 7. ron*-ert s
musical. Youth,.'i Companion; 9.3 V « on
gree* (lassie; 12. I'yrninfl, 1 a m.. In
somnia cluh. Nlghthawks
WliW. Cincinnati (4.: 7): 6. concert,
quintet, lafafone.
WTA M. Cleveland (3*9 H: R dan e
WOO. Davenport (4X3** 6 i" Hand
man. 7. religious discussion. 9. reader,
vocal, pianist; 11. dan* e songs.
K< i A I »en \ e- (324); 10 dan- e
WW.f. Detroit News (3.72.7: 7:30, con
cert.
WHO. lies Moines: (Silent >
PM V. Havana #400): 7 :{«». conc ert
K IHS Hot Springs Park Cl 7 .7 > X 30.
cellist pianist; 9 15. organ; 1". frolic.
WOS. .leflerson Ctty (44" 9); x. musical
\ V 11A I *, Kansas Citv Star t>.
v It on | . f the a if 11 -47. Nightliawks
W1IAH. Louievil le Journal < ’.99 X) 7: 50.
cum erf. readlngi*. pianist
KIM. Los Angeles* Times (4"49) *
ur-ht-Hira 8 5". children 9 .10. tall* 1"
trip to Mount D<wc; 2-4 a. in . Dost
A ngels
K.WV Hollvwood (23(5.9): X 1» ln
at rut. lent al. 10. \* *1 Instrumental: 12
or <(i*si m 1. celebrities of lloll> wood
\V MC. Memphis Commercial Appeal)
( 4 9*.7 I ; $ mush si
WCCO MlnneaiMilie S'*. Paul (41(5.4) x
philosophies. elf., talk; x 3", mushal,
|ii den***. saxophone «i ti a t f •* *
f K AC. Mont tea! (4:?7» *■ ". concert;:
7: '(> entertainment: 9. dance.
WKAK. ) oi k ( 4 *> / C 11. enter- *
tat«w»st, dacr« , . i
WH.V New York (361 2>: <3° Isealth,
talk. 6 >15. orch-atr. . 7: “« dan"*; x 4..
tenor. pianist, entertainers 10:3". dan<e ,
WNYC. New York (326): 6 1" 9 3*», or
instrumental, vocal music.
W.IZ. New York (435). 6-10 30. enter- (
talnment. talks, dame
WOAW. Omaha (326): 6. dramatic;
6 3*V announced; 6:45, program; 9, pian
ist : 11 Nightingales. _ l
WTAY oak Park (250) 6 f.-( n < **
sfcsl program: 9-in popular program;
12-1* 10. organ . on* ert.
KOO. Oakland C5b1»: * concert ; IV ,
band .O' a! yddte*s «' > n' * «o!» - -
wrr. Philadelphia (394 f.» ; 5:30, orches
tra: 6. talk; 7. concert
WIP Philadelphia «50$5* ■ r'v or*h»«
♦ ra . 6-7 talk* 1 vCk. R 1’ ■ on* ert ;
3 Of, dance; 11:05 teclta!
WCAE Pittsburgh *4*13*'. f ’(l t_n«
Kaybee 6 4 7, special; 7. road talk. • ."
concert.
K DK A Pittsburgh (368.1); -■». concert;
C:4S. Bibl« bin'. 7-4*>. band !
KHW. Portland Oregonian (43.). 1
Melody men. solos
WGY, Hrhenectady (378.5); S.36. dance, |
songs
Kg()A» Seatt’e *4.7.7): * 4 program
10 70, dance. 12:0-5. onhestra.
WHZ SnringfieM (71.73). *■ 1 ■* h stor% f
sketches 6 7". trie; 7 1 V * nio al. ,
X: " baritone; * 45. pla> mushal.
KSD. Ht Louis Post Dispatch (545.1);
8 svniphonv.
C1INC Toronto (376): * or<he«tra
K EN T. Shensndoati *t>6». t ". lon
\\ ui* Davenport (4*4): 9 foa ert; U.
orehesita __
WO AW Program
v--—--J
H»tnrd»y. February
i 45 F* M Public new* period, rondu*. t
erf br Eugene M Knna.k.
« P Drama11* hour Da% * Stud o or
K,r e-Sion S-le/tad ••'din** *e||
knnwn author* and
^ «, \! Eddie Ruhr * or., he* t »«
P'^'deiii since rema u rant*
* p m Program from I n v^i» '
Omaha v »n> departmen- Arranged
ne P Tht * I ' '
! rug.ila from l.‘n«veraitv of Opm»u •’''***
J* naan AVvpe. ;n*(ru< In' and VI* in P>
r l« r»f Robert f'ua- «den
Piano- Prelude C Sharp Minor
' r.arttmaninoff
Helen Berhard*
Voice—-Joy <’yrll Scott j
Jaannet’e < a « j
Piano—".luha Dance • . 1)91
Irene Glbeon.
Piano—“Canrnnatta" f hr.ett
Dorothy Rair.*e>.
'Sylvia** ..
Mary Ann* Hallmer. Xre. M ry Ba;>y.
Fonda Waldorf Arr-,:ne ^at h "■
nie GUleanle l.orlna Sleeper. Ruth Gut
ting \ nice puplla of Mrs l#u ae Jansen
Writs
PUnn— Aeger a ' kia*ger
U i I ** >
"Musette* Walt* Song' Puaxinl
At r* H*ig h F.nne
Plano P.omso Sit»a’ »»
Hut h S* .1 wager
A r la from —Flavian' - \ erdl
Mm I \N Arnold
Piano -Gotintrv Garden*- . ' K*
l.o s 1 e»ngle\
\ oi« a "The Moon Behind the <'«»?
ton wood . «'adman
A! a Hugh Kinnerty.
"Vacchio Minuet!©”. Sgambatl
«'a the* ml St i g be' g
• a 1 "M r.uai in G B*ethoven
lb) "Evening Song -- hwvoaftn
tr» "March" ...... Karganoff
rnPerslty of innaha String quartet
A 11< a Horn Jeanette Reeve* Marian K.'de
Helen pupil* of Robert t*uacadar»
Piano— Rove « F>raarn" l.iMt
Helen Malone
Voice—"Rain" Gav
Jeanette i'n»«.
Remote Control
Radio Program
\\<>\\\ ami Plume Company
lo Broadcast Musical !Num
liers From North Platte.
One of the longest attempts ever
made to broadcast a musical program
from remote control by radio will be
made next Thursday evening when
WOAW and the Northwestern Bell
Telephone company combine to tire
sent a community program from
North J’iatte.
The program will he given under
tlie auspices of tile Kiwanis and Ho
tary clubs from tlie Keith theater at
North Platte.
The music will be conducted by
long distance telephone for 3*10 wit©
miles or 2M air line miles to lb
WOAW studio where it "ill I* 1
broadcast through Omaha.
Officials of tlie WOAW and 'i-lj
phone company will prepare a.st tj
in tlie North PI itte thi iter "
the program will lie given.
DRIVE AGAINST
INTERFERENCE
A determined campaign against ttie
elimination of the man made inter
ft-rPni e (D radio reception w ill shortly
1,0 started by the road bureau of the
Department of Commerce, It is ex
pected.
The budget bureau has approved an
additional appropriation for this serv
i e which rna.v allow the field force
of radio inspectors and supervisors
to be douhied. While it is not yet
definitely known what th» amount
will be. it is believed it will be more
idian $100,000.
The recommendation for an addi
tional appropiration for the radio serv
ice will he sent to congress within
the next few days, where speedy
action on it is anticipated. Inasmuch
[ as the recommendation has the ap
proval of President Collldge it Is lie
[lieved there is little doubt as to its
^adoption.
Changing Tube®.
By merely changing the tube*
.around in different FOrke's, thF effi
j ciency of a set will be increased as
| much as SO to 75 per cent. First
[tune in a signal, and then take two
t f the tubes from the sockets and re
verse them, putting them each in ths
:other's socket. Keep on doing this it
! various combination# until the partic
ular cop binarton 'bat gives the
est result * is found.
Piano—"Past a net*’ ... Kelts©
Mnrv A1.!' - Kiri!#'
Voire hive 1= the Wind .Ma«Fayden
Mr* .T. M. Arnold!.
Piano—‘Gavotte Ra^h St R»*na
Arne- Pm:tb
Voice— The Wren Benedict
Mr* J. W. Arnold!
"Danse Negre Pjrit Scott
Alice Wlxios.
Pollchineile” Rachmaninoff
Grace Phangstrom.
11 P M -Fran W Hodek. jr and
ilia Orqaha Nightingales at Roaeland
garden*.
llitii P. M.—Organ music.
Radio School
of Mechanics
Expert Instructors
Full Course $25
AT 9143 Lcflung Bldg.
Radio Engineering
Service Co.
■N_ ^
^ You Can Have the
tv ✓ Brunswick Radiola
Super-Hetrodyne
• • • for • • •
$400
It's the superlative
a c h i e v ement in
Radio, the world's
outstanding Phon
ograph in scientif
ically developed
condensation — an
instrument years
ahead of its field.
Don’t Let 4 Walls Imprison You
Bring all the wonderful world to you
with the Radiola. Come today. See it.
Hear it. Trade in your old Phonograph.
Payment terms are exceedingly liberal.
A. HOSPE CO.
1513-15 Dougla*
k