davidaulloa/AmericanStories huggingface dataset:
New-York tribune., 1922-12-10
"B" Battery Units Well Madei
Have Special Spring Clips

Fre-ch pav-O-Nac "D' Dattsriee-
Both tho 22il.volt ond 4J-volt slze'
OF this battery were tested - TIE
Radio laboratory One OF tho most
outstanding features Of the battery
upoa first inspection is The. type Of
terminal used. These arc Of the cpring
cl . kind IN which Il is only necessary
20 compress the clip. inoert the. lead
snd -eleate the pretGure "a order %
make q firm connection.
The 22b-volt : terry g. equipped
With eight positive terminal taps rang
iur in i.6-yolt steps from i2 20 2215
volta. The +5-vot size has seyea taps
OF the positive aide raag ne between
3 and % volts. The larger batter
yoighs eleven pounds and tho s;nallcF
one four and one-half pounds.
Each battery consists CT q numoer q.
individual cells connected b. SOL
de-ed Lead. The zinc covering form
ing one terminal o. each o2 the
cells f. protected b. special rubber
lied compound ard the cells are sep
srnted by csribosri psrtitiona iaa-
bsdded in the snine substance. A
Ecavv seal ng Wa covering the wnoie
strpeture acts gs a protection aeainst
noisture and prevents internal feae-
tion between the individual rr!th.
Manufactured b. French Batter anc
Carbon Company, Madison, Wi'.
New-York tribune., 1922-12-10
National Radio Body
Plans Elimination
Broadcast Chaos
Is Busy Organizing Center
Throughout Country and
Will Cooperate Closely
With COvernmentBureau

Plans crs under ray % solve ihe
preblsms o. hroadcsesirr, which arc
oerieualy hGnticspDlng tie nssfuiness
Of ere radio iadustry, Il is announced
by the National Radio Chamber oi
Commerce. Completion OF the cham
ber'r exscn,iTs personnel vAieh will d.
rect the carrying eat of these plsas
vas also made kaorn.
Regional .-ai.o chamber, L vas
stated, viii bs estabiishei In many
cltieg. constituting a network og o..
ganirstion linking up VITA ths central
chamber IN New ICrk, wh.eh vii WORK
V.,h 'he popsr.ni-at % Commerce, the
United Ststaa Bureau OF Standard.
tAe gsv- Department and al other
iE.erests from /brcaGcfster % l.stener
IN sr effort 20 harmoniae On q nation
vide scale al radio iEstrementslitles.
Tho Nr6. rtsp In tie organization
CT rsgisnsl chambers va taken Friday
IN Chicago, when .stabiinhmert o.
Chicago chssnbsr vas discussed ~ the
Union League Club. Kenneth r. Gregg
q Neg York, rsDrssent,l ,he natloua.
chamber q. thls conference. william
II. Dsvis heads the national chamber
6s pralident. Harold J. Power, % Nod.
ford Bilieide, Maze, is vics.prcsiieut
and che sser-tsry 10 George +. Lewis.
Of NsT YORK Cloyd Narshal, Of Ncv
York. has bean chosen treasurer and
Gregg 6Gregg, engineers and man
ageFs.
Tho following board o. rog,ruors
hGi boea sleetsd; Alfred II. Grebe, Of
Richmond mn, Z. T.; G.. 3. Cooper,
o. Nev York; Alfred =, Morgan, %
Upper Montelsir, y. j., Byron l.
Moore, % Buffalo, y. Y: James r.
Crawford, Of Long IJland CITY, \. ~
HoTden Washlnrton, Of New YORK.
ard Gordon SLEEPER. o. Ne.f YORK.
District vice-pTesiients aago oeon
chosen a. followa; y. K. Lgscomh, "
Conbridgc. Msss.; AtVater Kent. of
PhiiAdelph.s; Colin y. Kennody, of
Sen Frsncieco; Robert II. Marriott. of
Seattle; Powell Cro'ley jr., of Cinc'a.
natl, Ohio; Harry Brslley. 81 Mi
warkeei Or. 9. Z, Burgess, oi Madison.
Nisp snd p. T. Mcdonald g.. cf
Chiesgo.
Esiabl.shsssnt O. -. regional cham
ber-, !, vas Gaid, vag step "a the
general plan . Fodersliy1 thc National
chamber b. tae formation of simlar
ehenaer- ln ,ho cities comprising the
aias fesioas! districts into which the
, cLsnbsr has divided 80 activities.
With Ns- York a. tho hoadcuarter
of the par9at body, Chicago has been
ssllc'sd sr the starting point from
which other einmbefs vi'l Be brow \ 4.
into being. Radio rspressn.et!-es fror,
AZ cver the country viii attend tis
CfieGgJ meeting.
New-York tribune., 1922-12-10
In Well Designed Head Phones
Care Has Been Paid Detail

Ccsyphohc Head Set - TAe phcrsa
used IN this head 90. are subttartlall..
built sad represent their type very
eredibly IN other respects. Zach phoac
has an impedenee Of 1000 ohma, and
their series combination satishes ar
proxiristely the requirement that the
impedanec Of the external output of "a
tube re equal 20 that from fisment 70
plate for most Cfieient operation.
Heavy cast aluminium cups contain
the permanent magnets and induetlvo
gpools that exert their variable a.
traction upon the diaphragm. From
The basc of the pole pieces tho rieg-
retic circuit Ia completed around the
bot'oa Of the cup b. ereseentshspcd
steel strips held 10 place beneath q
ring Of niekelcd brass. The two spools
Of fne enameicd copper wire nre Gov
cred with a protective sheath of heavy
black tinsulatiye paper. and the leads
arc sbidered 20 upright copper strip
from the terminals 80 the rear Of the
aluminium case.
The six-inll. diaphragm rests upon
the aurfaccd edge o. tho aluminium cup
ard "a clampcd IN place by The hard
rubber car piece that screws down upon
II. A coating Of non-nagre metal IL
given the thin, soft iron disk 10 or
der to prevent its sticking % the pole
tips, dc % zoo close contact. The
hard rubber car piece measures "a
inchcs across and hss at 81 center g
hole three-eiRhths Of m incl II dia-
meter, through which the sound "a car
ried % the car.
The hvc-foot Black cotton hraid-cov-
cred lead 10 connected st the phoaea
% open terminals a. the rear q The
Gazing. An eyelet tip Cts over the
terminal end and Is held securely be-
tween two small brass nuts. a double
aprinz headband covered with Tat
woven cotton strips eupports the phone
yokes. Adjustmeat ia made n the
usual way and friction Is relied upon
20 Aold the phones in any position at
which the yoke extensions are ret.
Manufactured ~ Charlie Cory d
Son, Inc. New York CITY.
New-York tribune., 1922-12-10
e. aR,ns1, Clrcai N.orl..

lt.s--v.E, yoa yis4c' e.,sT "
~. "-essr c.r-rit'' and fhe p1f"- 80. 80
.,,iaef"f Are these iTo ts2.fs 49,
- ~ ls cae ~ aas9'eiion ot "a. o.eei.s
~, = 4 ss,.c.ss. 10 construct snl Nalel
a.. - riy -srIT cac e-apioy'
-, aad tho ctAsT fogr tlscf' =. 80 -.
80 .argsi- r,a.i.ar N tcss"-, .g.-
- 80 taost 6e-lrct'-. IL ". Isn.,
!. ..e., fs .r,.-.,.ar ..st .hr- are e!AsF,htl
$40 rfnst you ray - 80 afseF.assf
-. 10 YOU eossiasr 'AiTa-r-il2
: --ou.I apyFsc'ats no o~i.t .t .-,f,,
ssrsian.s = .ril - ustd 49,
,, .~rr srafn O. e.. double i..1
~. .e-,r. - c. c., cf sua CO. Ao-
=, sfsr "a fe'sci5.. th9uEi .9s Hr"
-. 4 c-.s' I. 80 : arrttne ih-i ..' -,
rf ,u'- t..s o. er-' t,F -, ~ ,,r
....rr -ltrf- to,Iel os '-t tf.aisf'.
,-.-.,---,.. ,..,~ sul "push-ru..
.f-...it, ~-. ,.s.re!. flnar-.c and ai'-
4sne. T..- canaos be rsoc toEe'a,,''
Wits rcqara - :he r.ae- - .s'ai '|s
diagram shovr ir thif paper
t--s tubes. luz, - corfss' any Ha'' -
~ tubes can ic seed. 1'ese .-le
~. .e. ~ ra.io-frcCuelrr aaiPl.n,eFa'
rssir rrolpes uad~r these coaci,ioAl
= .aer roc.ited by tho cryf,s.' Wa.e.
q. nc de.sctor. TIE reetlhed entreh'
h,i.g Z. audio.frtquoncT 10 ied haeE
into TIC tubes, wh'eh sow act % an9io-
frequency aapliaeTf. -
IT, o5srs.lng al ra1.o-freq ere-
-,,issers eoadsnsess are placed
S-rsss ths primaries and seeondaries
~ ,he audio-srscucrey transformer. u
10 - % make a pathway of lov im-
.eSsnee for the high frequency cur
rs~t. n 4 these condensers that are
,ie rscre. 81 ruccegr IN the systeui.
Tbcir eapaei,y ~ili depend grca. deal
ron tbe tubes and transformers that
ere need. but they viii. range trofa
New-York tribune., 1922-12-10
The Daily Radio Program

conducted b. .Ae Rev. Austen Kemp
toa.
Q ,. m.-Cholr Of the Broadway Bap-
tist Church, Cambridge.
CKAC, Montreal, Cansda t43o metera)
4 p. m.-saersd concert.
WGY, Schenectady, y. Y. t4oo meters)
1890 a. m.-Nornlng service.
1880 p. n -Vosper service.
kDKA. Pittsburgh, fs. t5te mrters)
II z. ui.-services Of Emory Aetho-
dist Episcopal Church.
o.l5 u. n.-caiiiren's Bible Story, b.
Hey. ". 4. Logan.
3 ?. -i.-Sptcisl musical concert.
i:A5 .. n,.--Ncspor aervieen Q. tnc
Shadysiie Presbyterier Churea.
S.90 =. m.-scrviccs o. Point Breeze
Prcsbytoriaa Church.
wLw. Cincinnati. Ohio tS00 metersl
II n.-ReNRous services a. Church
- The Covenant.
wWJ. Detroit, Mich. tiOO meisrO
% r.-Chuycn services.
8 .. m.-Detroit News Orchestra.
kYW. Chicago. m. 600 meters)
$3.50 ?. m.-Radio chapel services.
voc. Davenport. IoAa (teo meters)
2 D. m.-Erwin Svindeli, organ:st.
1880 .. m.-SDort news.
S D. m.-Chureh service.
Q p. MP. s. c. orchestra.
WBAP. Fort Worth. Tex. 400 meters)
$3.50 p. m.-ssersd concert.
WHAs. Louisville. Ky. fS6e mstsrs)
5-s D m.-Secred concert By the Los-
ikrIl,c C.erus of international Fed
ogstiou q Catholic Aumnae.
rgg. Afiaufa. Go. fic- rieters)
New-York tribune., 1922-12-10
Two-Stage Audio Frequency
Amplifcafion Unit

New York Coil Compsny's Two-Stage
Audio Frequency Uni.-Grafting two
stages o. fudio frequency onto set 10
a simple matter for the owner Of this
unit. All that e necessary 81 % make
direct connection across from The
Dhone terminals of the old set 70 the
input terminals AZ the upper iefthand
ecrueT o. the two-stage ampliaer pane
and bring leads around from the -"
and "B" battery terminals 20 the desig-
mated posts on the ampiiher.
Each stage OF the smpliher consi1ta
Of transformer with windings mount.
ed upon u figure "S" core, moulded
socket and rheostst. All connections
are made with substantial timed cop
par wire and are we'll soldered et the
functions. A tv'o-po!nt switch at the
right end Of the front panel makes y
POSSIBLE 20 use one or both stages a.
desired, and the flament current TO the
last tube moy be turned completely of
By means of the rheoetat control in
ease only the fret tube Is IN uge,
The three one-inch uilled knobs for
control Of thc two rheostats and the
point switch are mounted symmetTicaily
upon the panel. measuring inches long
New-York tribune., 1922-12-10
Eighth Ward Radio Club
Seeking More Members
Code Taught Weekly Meetings.
Local Boys Eligible 10
Mcmbershin

Tho Eighth Ward Radio Club. whier
mecta every Tuesday 40 che Chrlfto-
dora House, ~ Ayorue b. w rool
400. az 7isJ p. m. shsrp, has room fcf
few new members. with a iii'r
knowledge o. radio. The club meu
bers have donated Two 6uizcr fcts ~
code practice. Tie members nfs ma. -
ing progress under tho Leadership o.
Manuel Smith. % p.alniclj. y. j., as
instructor.
The club viii yfit radio liliiu
WEAF through rho c0uricsy o. N. p
Hnrkners rni thc boys j0inirf uorf
vili be IN Che group that win make ;ho
yisit on December ll.
1. Is desired % have only b0.k VITO
fegide IN the reichborhood 90 I5f =
kins Square. between Fifil lai io'I
ioenth streets. Applications f0r mem
bership may be iled with MaftI
Remnek, secretary. Eighth Warl Rsdiu
Club. 80 Avenue 3. New ior..
New-York tribune., 1922-12-10
Pnx.r sia1s Amplifer

.-s.!s.,-yvil you uladi- se'.fo 80
--hg; e8n do % irnprov, ihe Sps,e Nsi
OF NJ rlggEzvoI ioul F.r,tksr I ~.
uslGg one oiag. of radio aps. ieAt.on hoa
r.rsrerati.s lstscios an[ '.rts c,sKes o'
eud.3 srspiiacst.on. I urs 80 r2ii1 on ~.
LAST. cr faagagvQ', rtef, 90 fpi.' % -
Other Gut.o T,rpn end % on tha rAel2'
frscusacv Gmr.lasr. - mGgna"sz d'e.
fs, ri-e - rtueh ve.rsas az Il nscss8afy
for c.-er reecp,ia- cgsuad q is-foot res..i'
II iurrssre the Ni cuTreat ~ suoio-
freqvtncv rtaNca - gft volume tae NhhY
.ourl 90 tie hon beeorsl ioe Ironses,. :, - y !.
fa-'s thers - corleneeF ecnnsetien thst can
b. added % tn loud sDe~ksr, thst eis-i-
ur thc tone rcun-wha.f Worid a pave
;sss o. ies- e;sgs hslpf-?. y. y.
Answer-I am not qrite elosr - -
jus. VIA. Bind o. tlbss yoy ers Using
In your audio-freGueney fst, bot Jour
last question az g. whether the power
..b. would help would asel 70 indi-
cate that you are uslnE 2ofe. II This
ia lie Gaze ESQ colts OF the last step
q; vour rst :, fsr too Algh fer sAst
rsrsieula- type of tgbe. ard a roreF
.rbs --oal9 ma.eris!iy help.
plaeing @ &C" bat.ery IL ths last
s.ag,. h order g Tnslntsin 3 negative
Alss on TIE grid, might hslp C. little.
This con - obtainsd b. meane of Hash
llra. cells. The roltags vii hsre 70
Js Isssr:slzsd by experiment, be. III
range aayvhels from rs % . Tol.;,.
There ray Be l!.tie trouble IN ths
magns-o. ..se.f. Tai1 a.gh. 30
caresl - tie moyilg eo!l rlssins rp
aQsirst the sail a vAici y y To-
cs.ss; bet you'd r-zgss. met Gou
trr q. o.aer remsLlss bsfcge yor ~
tsrfer, With .hs lasgasyo2, ~ y -
..r1a-fa, tlncrit % reasaelltIe.
New-York tribune., 1922-12-10
a. The Tribune Radio Comment and Advice By lack Bnn ca
Clemenceau's Last Speech
To Be broadcast by WIZ
Possibility Of Being Heard iu
England and France a.
Well ~ Here

Tie radio telephony enthuuasts
those In America, Carfdn, Cuba anf
the British isles perhaps elsewhere,
due 20 the recent improvement Of the
broadcastlng equipment Of VIZ, a.
Newark, operating on 3co-meter waY8
lonrth. viii be given n ch hrnco 70 hear
the farewell address % Georges Gle
mencoau. which VII be- delivered before
tho annual meciiuy OF the American
Committee 0f Devastated france in tif
ballroom OF che Hofsl pcnrsylyarif
during Iucsday evening next. This a.
supposed 70 be bis last puo'ic oppeai
arcc IN America on BIS present visit
A Characteristic OF M Clcmenccag
while delivering an address Is . r-pps
about while he Is spcaklrG IN ,-lcr
to pick uT evorv word fot ttc Invisible
audience a. ieas. Elk T,icrophonel viii
be placed along th, guests table
Tho microplonss also VIII pick up
the Introductory address Of O0rT
Wister the novelist. rho wiz preside.
and the comments o. Jules J. Juste
rand, Pr IS Ambassador the or"
other speaker f0i thc cvcning.
The 2,501 guests viii assemble 40
O'clock. The broadening by VIZ wiII
bog,r about ? and continue throuChou
thc 'neakerf' program. The myflc.
TOO, viii be broadcaft.
~. C,eucnccau is completing % rf
mafiailo toui through tho United
States. aud close students Of bis public
speaking ani writing can compare ho
notca ~ bis previous statements to ffr
u the Tiger o. France" has caafesi
h.G viewpoint.
New-York tribune., 1922-12-10
Novel Part Permits Csc of
Three Phones simultaneously

Pacert muiti-jaet-Tarec inde-
nenlent lacks are, by means O. this
device, provided from a single eonnee-
tion. ri 90 "block" shaped. iaeasnFirg
2 inches long and inehes vide aero
rs base. TIE long sides o. the blae.
competition casing are beveled tovE-d
the top. ,
The multi Jack ;aay be fatteEed %
the panel front Of anT receiving ae-'
the main leads beirg coraeeted 20 the
"phone terminals.' When .nose tnln
one phone plug Is inherited The pne.n.e,
newt eircuit. which So moYo desirablc lc
.ban n parallel connection, eiaeo IL tAe
iattsr case the impotence Is corhdeg
sbly reduced. An increase o: imPed-
snce will have mueh lees effect upon
tie operation Of the standard tabe,
fhan 4 decrease.
New-York tribune., 1922-12-10
Sunday, December 10
NJZ. Newark 1850 metersl

lo:2O =. m Musical program.
II q. m.-MOrning services Ht 81.
ThomRg's Church, New YORK CITY;
Rev. Floyd s. Leach, Ph. D.. cfaeiat-
ing; Z. Tertius Noble, Il. A., organ
let.
2 D. m.-City symphony concert st the
Manhattan Opera House by an or
chestra OF eighty-three players.
n. m.-Program arranged By \. Il.
&. A. older boys conference. Ac-
dress will be delivered In foreign
languages and ther translated into
English.
4.45p. -i-various addresses.
g.s0 n. oi-"Thc Bubble Books that
Sing Dy Ralph Mayhem.
p. m.-A talk on books Of adventure.
7,s0 n. rn.--~Child Welfare" By Judge
Geosve G. Appel.
7s45 D. nl.-- Book review.
s y. m.-Coneert BY the sitiis Irio.
g.zo q. m.--Concert BY Felsn GarLi-'
Q p. yladimsr ROSing. Russian
s.so se'Gs' y. Tse'na steer, cOioratura
soprano. - ..-,..s.
o.55 10 10 p. m.--Ariington time Signals
Weather forecast.
lO:Ol D. m.--Continustion o. program
BIZ Felian GarJla.
New-York tribune., 1922-12-10
BY~ak In Schedule Stops
Amnndsen'a Polar Reports

7. Il rspcr.si thst the sTrahEsnien,. |.
~, ca-,a.r Amrnisen and q cha.n 81
r!rllesf ltst.ona for the trapsnl'tsion
x 3,r. aes,ssss has no, seen car
rici CO.. Amradeea'a chip, the -Aanal
wa g. .rgnfr.!. IL Noas, AsskG, a. q
n .as' c3ac. o. A'rercl % tAe b.te
ro--e.. .taGsEzsl we-e . - rsce'Vea
81 .ha Noiwegsa Meteorological las,i-
.',.e from Octobe. ~ onward. feT
r.s.rages wero received and haze been
irl- .as-ed or l. tAe Eihsl IoTsr.
lave igstion j. Being carried ovt WitA
! v.e-- % iHiirC the bresl u tat
ehrtr.
New-York tribune., 1922-12-10
Report of Tribune Institute
Radio Laboratory for Week
Apparatus Tested and Approved Includes Radio
Frequency Transformers, Two Stage Audo
Frequency Ampli6er and Other Parts

by ~ inches high. IAe panel ia ses.
tened 70 the front edge Of a blsek an.
ameled hardwood base, 8 By : lrehes
and half-ineh chick. Battery binding
posts are 81 = special design which
eliminates the possibility OF the wires
yqueefirg out. AZ the heads are eercved
down tightly. and insuras good contact
The whols unit consists essentially Of n
saSr,entiallv designed apparatus with
out the tim. rnngs,n whieh contributs
more to lrst cost than 70 srheiez. oper-
alton. Manufactured BY Nov York
Coil Company, New York CITY.
New-York tribune., 1922-12-10
SiN Soc Canndinn slnllnn.

With tho primary object of kecpins
vedorsi officials in touch r-iih one ar
posed % Dr. erected Dr. g0rrlmcr
ol tia Dominion Of G. ala. TL. io'
loving sites are mentioned. Foft
Smith. Fort Resolution f14t s'rpsor.
Fort Norman. Fort macpncraor (al'
Mackenzie Kivcr) and Dawson C.ty
New-York tribune., 1922-12-10
New Link in French Radio

AZ Pluto, Eesr saigon. ths Compagnie
General. DO Telegraphic sane III has
erected nev etstion. Direct commu-
nicsticn VITA 50. Aeiss and also with
faEansF.-o, Isdscasesf, &C. % De- cf-
fae.sd
New-York tribune., 1922-12-10
pSulers S.ur Become Radio Fans

ti,,s,.A Aing and Queen of peig;ula have
~ = fAoio fans. According 10 re-
a. A'ng Albert and bis qaecn rs
-. 70 TEST eo1ccrt of the afaiine
- ,saseral chimcs rhief ~, h~o-Jcset
New-York tribune., 1922-12-10
bother s''l Chance for ID. \. Fans

'sta, r.. .'.As'f issions OF telephony
e ~" ssNustcrhausen, Berlin. are
4, t,.-sfelength q $500 meters. and
il.,s are 10 7 q. n, II 8. m. 20
tssnrs-,,e IN anc Z 70 $3.50 p. ~, middle
New-York tribune., 1922-12-10

The following apparatus and instrn-
nents were subjected to complete and
thorough tests under setusl conditions
in the radio laboratory Of The Tribune
Institcse during the week. All have
been given ',ns ,sesi.ute seal Of ap-
proval.
New-York tribune., 1922-12-10
First Aid for the Radio Fan
Correct Way to Join VariOcoupler Taps;
Points OH the Double Function Receiver:
How TO Construct Audio Frequency Choke

.o0o6 20 .o0i msds. it vii Be nscsssaTy
% experiment q ll.tlc ~l.A those.
The telephones are plseei IN tke
plate circuit ot ths last tube, IN of1sr
10 have ERE correct amour. OF impcd.
ence In that e!rcult at acilo-frsqrsa-
eies. A coaieuerr ~ shuntsd seTcs,
these tsle,hsnAs FOR the sane parpocs
Tbs; cendcae.n arc shunisd across the
sudio-frequency tranefofnerr. Th-
la,'sT should not hars q grsa.sr ratio
than four % one. The "push-pulW
fyrtsm of smpl.ication 81 solely for
""S'o.frednency, and i.a purpose T.
20 c.Ve better ortp1t fTec from Gis-
tvi.,vr.
Notes on Sup-r.He,erOdype
csss.!ea--i Aav- sour. heos.a2. et ths
,apcf hstcrocyns a. psbiishsi In Tosf
papss on JuiY 20. vovie IKE 70 ssz yea
The following cuegtiors. what giDs due.
lateral coil would you recommend for the
In ,ndueiivt r.isiioni ! siso nsiiss 'As
s-eoa6sfy of ths ouo.iistion transformer IN
TIE HTid circuit Of the hs.sr3d,n. y vAri'
sbls. Can tails be agej yalnei ~ not
ho- can roa in-as Il v-rits,.f " yoa
can eugrss' a Better uis;hoi ~ o-si,isiion .
trsn-formtrr of ieG.eeo eyels fFeoreney I
aao-id - glad % has g. Also. whst s'rs
eondsa'fr, sre gssa n -, plate eno RIG
circuit = the NJ ,vbsr and ATs hard bSlea
i.;i.r fsr ths ts,ss,orrf Z une-r-ssne rs-
rir'.nsH e975llar II not rstisfseiory on
shor, vsy.s eiiAenSA you sho. ,h,e ,,,,iii 70
gei l1r,'n:, ! = "a: pc: R':sHsss',i,. ,.ss :.
.sare.as ~ou- os.,iis,ion g is0.ses eYelse
fscondt saould IKE also % tnoE
Naf fifc rEd nor mary tr-ns OF Tire ero
ntt-ssAly 10 make an Audio .ffecu.hey
ch1ts c-N --erra over an iron core tahen
sson, scrd s2ars e5g. l. /. leo.
Aniver-I -on!d euggest tEst .cs
uae q standard vsTio-couDlsr a. 81
ci'latioa transeorner h thi, eeae.
The recondary OF ,he transforner IN
the grid circuit o. the heterodyne tube
should a.so b. formed Ok coupler, "a
a A1ed coil ia loss efficient. I, you uao
the duo-iatersi eoils. would euggea:
'hs; you make arrangcnents 20 tap
thcm.
Iho eondencers IN ito grid circuits
,f the Z. /. tubes should Be seert
.0o2j mfi. There are no conden1cr,
h ,hc plate circuits.
Rehstaace coupling il used IN ths
rrpcr-he.crcdyrr, because VIA. you
arc acturlly linp'ifying - not ths high
.r-cuenc- cufr,-,s broadesat, br'
the resulting frsqceaey from tke dif'
ference between tSo frequency OF the
ireofainq wave snd tAe local hetero-
dyn-. I. a. on th:s Fundamental prin'
clpls that the supsr-heseroiyne II
based, since z. 20 ;zueh easier %
ampl!sy modsfE.s fre1ueneie1 tasn y
s. % aap,ify very high frequeneiea.
WIN regard 70 she saeic-srsGasaes
.toke. the core ehoald be about ~
ln-ao- long ord = iaeh n diameter
Over thl, VII be placed az lnsulatinl
. ,-bc and then vina 1900 tsrae Of 10
. Ss erssasled s-l-o o~c- y. THE II
a,-e -ou sati.fsctoTy caote * eoT
I rect .mpelaase fer the best sTereE'
response 20 spsech Frequency. TA'
.rsasforiner sssrked 10 can b e th'
/ regular rsdio-fTequency type de,igne'
/ for y~a-c loagtAe Up 20 5000 meters
New-York tribune., 1922-12-10
Distance Features To-day
Eastern Standard 1ine
wcL Medford Hillside. Mass. SSs0
mefers)

Z ~ n-aThe Family cire'e"; saastn-
arv Choir Of the Immaculate Coneop-
ton Church of Maiden
l.e1 n. ;i.--B0sf5u police report
~ f.. .. . f-fsr-fN 90. rfrI.
Mexico weekly ledger., 1922-03-30
FOR INDUCTION COIL
Simple Way 70 Find Out n the Sec
ondary Winding 10 In Good,
Condition.

To test the secondary winding Of
an induction coil connect a volt meter
and a six-volt storage battery to the
secondary terminals. The voltmeter
should be connected in series, that is,
break the wire leading from battery
to coil and attach each terminal Of
the voltmeter to an end Of the wire
that is broken. II the current will
not flow from the battery the winding
Is open. If the winding Is In good
condition the voltmeter will show a
reading of half the storage battery
voltage. 3
Mexico weekly ledger., 1922-03-30
HANDY CLEANING RECEPTACLE


. conysaieHt p~ecaptaeie to have
around tie garage fSf sseaning boltR.
nuts and other small parts is made
by removing the bottom from a One-
pound coffee tin and soldering In its
place a coarse wire creen The
parts to be cleaned are then placed
in the tin. the cover put one and the
receptacle is shaken in q larger pail
containing kerosene OF gasoline. Dirt
and grease are separated from the
parts by the oil and allowed to fall
through the mesh.--Motor.