Radio-Electronics Reference Annual - 1946, ZACHOMIKOWANE#, Doc, 00 - Księgozbiór Elektronika
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qq
0
k
Published
bg
.
)5 WestBroadwag
.
NeuYork
7,N.Y.
RADIO-CRAFT
PRESENTS
tun
FOR
SER EMEN
Ctctyov hec
copy hom
yovt
IRC Didrhulot or wrile
dircct
Every well'posled Serviccmonwill wonl hi,
oen
perronol
copy of thii
hew
IRC Service Cotolos.
Prcfu3ely
illu3lroted wilh lsctul chori3, diogromi,
toble3 ond producl piclures,il contoinrihe kind
of
moleriol o busy mon lilca
lo hov. righl ol hit
fingedlpr,
trjbutoB no.k, rhere
quolily
r$hlo6
ore
quoted
Alro includedore perlinentfo<15on IRC'r
"Ceniury
Line"
of
voluho
conlrok. ,. 100
(ontrob
thotwitl
solve over 90fr of
your problemr
in thii cotesory,
8ul ih66 ore only the highlishh of lhj!
helpful new
cotolog.Youll \tonl to tec ond reod n oll.
Ahohq the interedingfeoture3in thi3
cotolog
you'll
find the
.omplete rtory on
lhe n.w
inollcr rire BTS
{%
wott)
dnd BTA{l wott) reri'ior', o' well o' useful
dolo on the
enlhe
BT
ond 8W resistorlines.Now in
RMA P.elc,red Number
Ronse. 03 rtondord Dil-
/v{okesurclhot you
9ct
your copy by nopping in
ot
your
neore3tIRCDaitribll,or
or,
if more
convenienl,
drop o
cord
to
Depl.
RA
Inlemationol
Resislonce
Co.
401II(|RTH
EN|)AD
STREET,
PIIITA|)EI.PIIIA
8,
PA.
i,st
tlrllNLt
Itgl|ffs l0tl lrP6 0rRtstsllttct
ultls,u t||mst{tPts
ronmit ffPucfit0xs
lx^i tWoTrar
rrrurrcruRlN
[i TtiE
rotro
Contents
THE COI{STRUCTOR
A.T\IDDESIGNER
Public AddreBs
Sysrem
A Mognelic
Recolder
Electronic Metronome
A Pen-cnd-lnlc
Recorder
TweTule
FM Receiver
Wired nodio
in Two Un s
l-Tube Metsl
Locotor
2
6
22
28
29
30
SOI'ND
AMPI.IFIENS
AND INSISIJMENTS
EleclroDic Guitct
Ecoromy 2owotter
Fixed.Bios
Amplitiers
A Novel Feoturein P.A.
Sysrems
A Colnpoct Ampliffer
Au!trolion
Champion
l3
l8
20
36
THE SERVICEMAN
AND },IECHAMC
Remote
Juk€
Boxes
Storion niding
R€cord Chongors
,]
27
MACTICAI TEST
INSTBIJMENTS
Fl,i.
#:
,
Signdl Troc€r-Plus
Cdpccilester
I
l{
'f{f,;,
Dt.ntrmic Tub€ Te$er
C{pccitor
CheckeE
Electronlc
Multichecker
Belt€r Signdl G€nerdtor
21
24
42
43
THE ?ECHMclAlrS DEPARTME$T
How to Trock the
Superhet
Mdtctdnq LoudsF€dl(grs
Medrurem€nt of Ccpocity
Tronls{BBion llaes
C!o$-Ov€r
l0
l5
23
3l
Network!
PNACNCALRADIO RECEIVENS
l
2
26
N6w Id€o tn Deleclor
Circuits
Short-Wcrve Int€dlei
Two Cigdr Box Rddios
SHOBT CIRCI'ITS TIID WInlNG nl{I3
Neo! Checkerlrom Old Pons
A Chdlsb
Crqdl€lromPtD€Filihos
26
41
.. .
coFrlh
r'.5 bY HU€o car 9tacx
Public
Address
Reloy
System
ponabl6
plcLup
A compl€tely
unit which
cdn be Eoved
rcptdly
6rd
{'ithour
lhe accompcdmont
ot kailirg
{'ir€s
is indoed
o usetul device
in public
ptckup
ol outdoor
€v€nts. The unit shown ar th6 t6fi-
od&$s
tos€tler
with its d€Biqnsr
old
the dutLo!
ol dris cticle,
!rlr.
Comtgh-
i:s suc}l
c
pi&u!'
cnd letrdllminins
statton. ti LG
conside!.bh
more
outpul
thrm ths pqct-typo
!€ls
used in cone€ntion
hdlir,
glvog
dld
oxcelent
results ovo! distccos
ol ho!€
tlld
three hun&ed
Is€t. Such
lcmqe8
qre
Usudlly nsc
the
plocticdl
tn
public
cddr.s!
r!6dEuD
worl.
VERY radio M. who has had my
part h
thc
setting and op.€lina
ol sornd .quirment
at
ield-me€ts,
Ietball
samcs
and
ofte.
!trblic
evcntsrvh6e larsc crowds arc
rrescnt
has
been conlronted rv'ft that cver-pr€sent
p.oblem
oi havins somconcrri! over th.
rut
$hich sas rot to exceedone mn total
Aite.
codst.u.lion F€s connlet.. a class
II experinentallicenservas
era ed"nd the
call leners W8XWI
On ore occasion *tere th. announc.r
*ar coverirs an alhlctic .o.tc{ on a rec.
reation field. a clump of husfi.s stood b.'
trrrca hih i.d 16. r..civ.r i..1 th. raai.
savcs 1!ere alsorbed or reflecredto $rh
an €xlcnt di.t
sati\fuiory oDeraiionnas
imro$ith. wlen
the ante.na sis r|fred
in srch a Nar as
to
dirc.t d,e s€ves
aFair(l
rfie recrslion blildins at an ansle, ihe re
frcctcd
\urc\ rcx.hed 1ne .e.eiver an.l
!,er
fect
re$rlts \'.rc had f.on rh. l.rd
sn.nk
were
assienedto the
The first
trarsmilrer
placed
in tfiis servicc
rEs hilt in
lrack
fo.m and cafuiedon the
bacl ol the
arnouncer.
\Vhile
the opcralion of this errlipn.nt
\rxs satisfxctory as lons as
rhe .r.\'d re
maincd
at a dinance frofr
rhe
.nnouncer.
vhen lhcr' .ro\vded around him the
llllF
siL.ah wcre absorbed
to such an exte.r
rlFt the loud{Deaker r.hloc
$o{ld f.ll
To
overcomcthis di6crl!' the tnnsmil-
ler was honnkd
on a lrllod .nd
thc
an.
tenna .hinged
to a fork or end 6re r\'!c
which beinc directional.
remitt€d ih.
heaming
ol the sjmals to
dre
receiver.
Anothcr
advantase
saincd
by
ihis ar
Engemcnt was the
lacr tfiar the antelna
Ms
'vell
rhov€
th€
heads
ol rlE Deonleand
theihirrinqof rt. .ro$d .lid
ioiafi&r the
Tfiis station
wilh a \?ve lensrh of a
litile lessihan
one metcr. ooeiateaon $,har
i\ l.roNn
a! Tine-ofsishrtnnrmi.sioi and
bestre\rilrs
rre ohEined whcn rhc parh
b.-
lween the t.ansmitter and r€ceiv.r ir l..r
Thc
,tuestion
usually
asked is how far
will
the sisnals carrr'?
This cah br an-
rweredbv elins ihat in hinety-6v€p€rcent
ot all oc€sions
whcre this out6t i,
used.
the distance cover€d
is less than rhr..
The writer has folloyed tne soundbusi
n€ss for
last
6lt(,en
r.a*
and
pe.sonall:.
cncotrnt€..dthese.xble difi.iltier H. co.-
ceived ih€ id.a ol .linrinating
rhe @b1.
dlirelr Lr usnrs x small loN power lnns
nitter,
r,owered by b.ttcries, and orried
by rhe announcc.
This relays his voicc to
a sp..ial rec.iver
ri.t
!p, locatednear the
public
address anlli6er.
Thc ortpnt fr.n lhe receiveris f€d into
ihe amDlilic d after ahDli6caiion de
liy.red by thc loud-socake.; so that all
On anoth.. occa"lon it n?( f.nnd rhal
lhe vayes when strikhs a concr.re \!xll ar
rn
lnclc $.r. roll..ted hlt lrlren strilnrq
sqtarely
ther
nenei.at.d
ihe rhree foor
drick vail and operated a
lrllic
addrc$
sv{eh inride rhe btrildi.c.
The kanshirt.r rvill delner ahort onc-
halt Ni( vhen rNo 958 acom rub.s arc
rscd Nnh l3i volis on
the
platcs
\\'itll
hvo 955irhcs lsinA 180
volts on
rlares,
xn
otrtptrtol abort rhree-ourrter
\'arr .ai !c
A request rvas madc to
lhe FCC al
Washinston lor pcrnGsion
to
cffy
on
some cxpoihents
in dris 6cld with a
tBnsmiltcr of
slnable
power,
but drey in-
dediately
tu.ncd rhlnbs down on thc rc,
qu.st,
statins that no such serrice had €ver
FREQUE'{CY
STAAIUTY
This
station, snall as it is. cones nnder
the regrlations ot th€ FCC ?nd must be
handlcd bv a lic.nsed comnercial
Dhonc
Thc FCC require! \orc
means of fr.
quercy
conl.ol on
all trinsmntere and lor
those workins on lrequencies
alDve 300
negacycles
lrobably
lhe t st metfiod is rh.
,5c
of hrn.d lines in both the
rlate
and
ll theseare risidly constfl'ctcdand Nell
insulaled, ihe frequencr-will .enain con
stanl over lons
Deriods
of time. Th.ir 2n.
pearanc.
and rclativc
Dositionsa.e €asilr
seenio lhe two photosarhs.
O.e
rrecaution
nust h€ taken
i. mounr
ina the porcelain
in$ ators to the ahninnm
chassis If
these arc scresed d.sh righr,
lhc chancesare
ther will ceck and the
copperlubrs will noi be lrrld nsid enoush
RADIO STATION UT8XWI
A two
y€ar
corr.sriondencefinally re.
5ultedin a hearinc rd
the sflter nDEar€d
b.roredem wrtha full
d*(riDtion;f thc
!.w scrvice he desired10 estalJlish
About
threc nonrhs larer a construction
Frmit
was
sEnted
for a small transhilrer
10 op€rareon 310 ner'icycl€s
wnh an o,t'
Thc b.sr liy t6
lreveithis.
is
ro
.ut
a
pi.cc
of felt thc stan€ of
thc bas. ol the
insrlato. and
DIac€
ir berwe€n
rhe in$la,
tor and the aluminnm cha$h bcfore
riFhr
ains
the
screws.Any
variation in the er
celair dulcd by
rehoenrure chans4 {ill
he tak€r up by
thc
falt pad
and da;age ro
rhc
insulalors avoided Thes€
Dredurio.
oust b. tak6,
Flg. r-T116 hrlihtt.'
ur6 |
.nd.,d
tr.i.mittloiJin.
as fr€au@cy er
bc %ri.d
cn.ult
rg{a
BaDto.EtEqBoMc
nEFERETCEA.lttfl'r!
unir.
Thc one \rilh a ionr
r.,'rs rllg rluss
into the sid. oI the
l,nbli.
aail.cs atrrl'ner
10drarv ,ilanrentann platc
(rrilcnt
.nd ttre
odrer calle Nnh x lhone D[r!
lteds tl,e sig-
nils nro tl,c amtliner
hptt
jxck. (Cal,l(
(.nnc.lnnrs
rrc not slonn
id
lhc
s.lL
onv to casily at thc freqrcnc! !scd.
'lhc
chasis G lom.d lronr a one six
teenlh inch ahDiu)nr sheet
by
le.dins
it
over ! rYoontn l,lo.k ft ,,n,res tNo
nrclrs high, i.ur r .'n: llrli nr.hcs Nid.
trnd rcn nrrh.\ l.n,s. li). cir.nn is nr.\u
'lh.
llak
rrLrs i,c.i.Jr no.i l[d
,lrarvn .olprr lLr[nr! sxte.nlh irch \raLL
trnd orlsid. dixricl.r, tlirre crslrli nrh.
'fl,eI
nrc srxccd lhfrc
q(xfrcrs
nrcl,
lr
rlveen.entosand rrr ilrr $.hts l.f!.
TIr
!late
t',ninr .onn.rnr '. tlie rn'.1
r\ro
rlxre
1Jt,c.
The
dimr.sions
oI rhis r(..iver
1)(k{11)
.rn
1,. 'otrghlJ
jrds.d
1,r norjns tlic st.
.t tl,r
!h.ne
plls
Thcrc n,
I'orver{r, no
(..\(ln,s,
andth. cllicicr.)ol nrf
R1{n.r
is nr no wi! rcdu.cd
l,l it\
exlrc.rc
conl
.n', oi tlLc
l,hr.s
nren to
onc oI rh. tLtur ,!xl rh or|r. n,ldiirrl !,
a nrxchnicscr.s. \'hi.L i\
tL..rJ.n
llirougl,
rhe other lulc so thrt r|.
(linxn.t
h.t\r.er
J,en caDtc rari.d Lir ttrntr's TLc\.
rrlal!!
rtu
tllre!
quxrrcrs
lrch $ dnr'ct.r.
The
tNo acorn sockcrsirc nolntcd rl
oie cnd
oi dre cl,xssisand cr.h
rhic
tub.
n conne.t.dbr n sl)ortstoursLr. to rlrr
llatc
sprnrg or .ach so.tet.
On thc front
r,arrl
a'..ltrnrr rtr! ln,,l,\,
rlic bar knoL on lclt..nn.l\
rl,c
rlnle
roltasc on rlre 955 dct.rlr
rr(l tl,c l$ol,
d right is the hlner.
Thc
jack
xt bottom of
lxnd
i\ nt i,r!l
rhonc
rcccplion \vhen ncrf$rt
Tnc anrliicr is slrorfn
in Fis .l Inrrl
maybc.ilhc. ir.fr lhc r..eivf' .. i rii.r,
While a .xrh.n
Di.r.r[.n. nr.r i)e ts.J
in some cl.ss.s
.i s.fi.c. rvhcr. th.
cr.rvds a.e larg. d the roisc
lerel hic|.
r
sood
.rrslal nricror,lr.ne
Nill
Jjiv.
txr
.t
1op-Sp...h
.mplifi.ri
bortom---.tr.nhiH.'.
Unfortrtrrxtcl! thc orrprt frnn a
qood
.ry(il
mikc is lo\L and it rnrst l,e blill tr,
bcI.r.
it can Le led illo lhe Dodrl2to.
L'31
of P.rk Urla in o.cilhror
.dd M.dui,lor
L {dhod.. rin,
r!
incL oD.
(op!.,
rtrbin*
I-P].r.rin.,
{
irch
o.rJ .q,p.r ruhi!( tqr
ndr drLon.
3nd etak rins r.
I:or thir
rrrrosc,
x 1wonrLc sl,.echam
t,lii.r
n rcquir.d .fld x circrit dj.lmm
i\
stoNn, dso x
rnolosra|j,
of
ln. onc nsed
in thesc cxleriments.
A rolunc control cnrrilesthc openror to
conbol Iecd backrvh.n oprratins.t lxriors
disr.nces fron)
thc
loud snealiers.-{s tne
cquiFrcnt is uscd almosl entirelr ouroi-
doore.d,is Droblemis
not nearlr as scrious
as in D.n' P.]\ installations,lhough orc
nrrrt b. rxt.n ir c.rtai. sct urs.
Tlr. nll.rol|one {s.d nr thes. erlt.!
cnts is lljc Tum.r Dodcl 22\ \'irh tillins
lrcid. T|c tiltnrg hcad fcalrre Dales it
per
i.ct lor inrerri.\vinc, .s l1r. fe.d cxn be
tLtrncdt,ack and both sidcsol drc conv.r
spac.d
!a
inrh
F9. z-Re.eivinq
un} ol rhs rsl.y
.Fl.h.
lhc iir endof tlie
trnicsire con.ecrcdbr
1
ineaYJ-
L-Clpe.r
dk"i.
cotlre.
lokr,
pp.rtcd
on a
por
TLe rwo
lriti
lcadson tl,c ico.n
sockcts
. r! nr!.r
d tv
,
rrr ,n
I
rl.,
I
r'
,nJed
r! ! a..is
tlrrol!1,I ?! 000
ol u r.si$,,r
3t
rl,e orlonle end ol
rlrc chissis s
\ro-\sL.
irs on,'l'ro
rr.r.i!fl cr Lr,l
Tne crth.dc td,.\
are nornt(d undcr rt,e
.hassrsand
are id.nricxl nr sizc
xnd sna.
'r
s
ru d c
rlir.
rubr\ tr(r
tle rx.!o!o.
!r tr
-
ldrIilL
\l cl] i\ nr.x
jnlh.\
'lhc
cat|ode lr$ins
condcns.r n .o.
structed
Ihc same as
the Dlatc ..nd.n\.r
but tlt diimrkr
is onc and;nc
h.lt indrs
r]et*ccn thc xcorn
socketsis a shall
con-
d.rser,
u.enrlir' I nins
tre 6 rnr.nj\ rtr,
R-LR.C.
25,000orri r rn,
Eiibr
r0
in v!
Fns,
t06nson
in
Originxlly this Nas coisideredas
nerelr
xr cxpc.inrental'nodel xrd a
l).sc
lor
frr
(h.r
delelopxrenr,
Li
of
Pdrtr Ur.d ii
R.c.iv..
Pict"up
lirt fo. n.arlr a (ar n)e
(rile.
L1s lrc.n iNrrnctins ii radio an.l
.,itl,.natics at thc l:iirh Comm.nd Sisnal
aorls
Sd!o.]. ir Circirnati ard durins this
ANT
ti
ioch
bra
Th.
hn.h .:o
b.
vin.d
RI-IR.C.
q{r
5 Dqohh
r6ki0r
t,
c2,
-comdt
Dubiti"i
rid. rnd |
!,{
rrci?s
ron(
RIC,r5 !!h3 No. 20 DCC
.d.dq rk". .rd.
*d.d
in on. Iay.r ad ho'nd *iih ondi.n
crsPra3ud
t
nrd.
PaD.r
ond.ns"r
cs-sP!3N.
.) nrd.
Fp.r
coDdd$r
R2-LR.C.
?500 ohm 1 ,rt
Thc rNorondcn\pr.\.'rrbte
t'r.c,ewif:
i rnd out
thc rlrn.J.d r.d
cunrtrFLt r;
on.
llate.
makt
tuning up_rvhich
is .t.nt
mrnner-asie..
A hair.in
lou!, L,,
n,olnRd in
lle
ptrre.urt
i;,
to
flrr anterna
_II
a
(arLon
microfhor"
is uscd,!n, .JLd
!t ll,c nrcrotlionr
ransl!rrrcr \econdrr\
s co',nec,ctlro rhe
srid
ot rr€ tojcT
r.si*o'
q{
Rr-LR.C.
r00,0o0obn
,
'.!nb'
RFI.R-C
t m.&[n
,,
*ar
r6kro'
R5--.Er.c&rd
50,000
ohD
vorun.
onrhr
Fig. 3-Sp..cl
.hpiili€r ur.r ligh.m! tub.r,
rub;
L
of P r. U..d ii Sp..c[
Adpllli.r
:ru rhe
other.nrl
is
sroundeLl
ro LtD$is.
period has had no
time
1oilo .xp.rinental
cl, c?, cr, c4, c5, c6--sprl&
Rr-I-RC. 3 ft3ohn
,'
*'r r*Llor
R2 Elre.d 200,000otn rdhm. .drdl
n3, R3-I_R.C.
r h.sorn
Z
w{r rdhror
It1, R7-LR,C. 100,000 orm
1,1
wn!
r.lisb
R5, R6-I,R.C. 25,000ohm
lz
arr
TWO.TUBE
RECEIVER
The rcceiyer pick
u!, .c'xj!.d
t.o.j ,ri
G\cj is slo$n
in rlt
!holo:r,q'tr.rL! ir,
'\o
.rLlc. fia. 2 rs rh. s!lrm;!.
ot rtLL.
Howeve., as the cqlirdent
.F.ates very
well in its
prcscnt
slrtc .f dcr.lolment,
this deliiled dcs-illion
oi sxne nay be
r4isror
r.dio
P. A" ry.t.D,
lofi-Sp€.ch
.mplili.li
c.it.Fr!eqy.,;
1916 BADTO.ELECTBONICREFENENCEANNUA!
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