RADIO RECEIVERS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600200330-4
• Release Decision: RIPPUB
• Original Classification: R
• Document Page Count: 4
• Document Creation Date: December 22, 2016
• Document Release Date: June 29, 2011
• Sequence Number: 330
• Publication Date: October 26, 1948
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/06/29 :CIA-RDP80-00809A000600200330-4
COUNTRY
r..~r~~rlcATlar`!
LcNTRAL It~JT[L'
INFO:~n9A
1=0REIGfV DQCLIME1~iT5 OR RA.pFO BROI;i7CA53S
SUBJECT Radio Receivers
HOW
PUBLISHED Periodical
WHERE
PUBLISHED IISSR
DATE.
PUBLISHED Feoa'uary 1948
LANGUAGE Rueaian
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lYtllltb lT l/t/. YnlIODYCTIOY 0, Slt6 Poly 17 IT.DIIIInlD. YDD?
^YLY. t9iDY8M1riDA cpMDN!tdP tD Dnnr DP file roe9 nnr o[ DnlailD
l! tILY11N /YpplM !T TYl YLDLnY/ Mwrt
DATE,OF
INFORMIA?101~ 194E
PATE DiSP. zb C~c v 194.8
N0. OF PAGES 4
SUPPi.EM~NT TU
THfS IS UNEVALUATED INFORMATION FOR'THE RESEARCH
USE OF TRAINED INTf_LLtGENCE ANALYSTS
SOURCE tD~N71FICATIOM Recta, Ido 2, 1948.
'. requested.}
SAT78Ri-POii~b s RL-9
'Jbe Super RL-9 has faun stages sad uses rama11-o12e battery tul-es< It
inaorpaa'atee a regenerative oircuit is the intermediate-frequency 3tege, thus
sutoa+a+Lia vole control. ?!he oacilla~cas tuning. circuit has a moedale aazo~,
tuna fauilitatisg the r6ceptian of abort xasee. It cea pick up a~ radio
braaelaaot in the throughout the xhole year. Its canatruotian ie very
aimpla. ~ndivSdnal coils are need, xhioh are of aiigple conetructlm but of
geed quality. Aqy coil built fam aacatenparaT~r "super" seta Den be uer~. The
ohsasis io enq to ,TSeem~le.
0lr~,ouit
'Jbe oironit dipgramt oaf the ~~~+er ?iL-9 19 egpendei. 7iaie set can opretr,
an lb - 30 mstera (short Tt81e), 200 - K50 meters (medium xave), sad 750 -
B,OOA me`~s (lemg xnve). .
'!h*ue ~-242 ~s need as that frequency oonvertar. It coolneate to the
antaoas an ali three banii}s. Rlriaseere ere aa. aa'.~ is ttne input. circuit.
>3'i~ed trirssra nre uecd 3a the asailletor circuit. The short-xave agile are
planed betxean the appropriate elsotrodes of the frequency converter tubes.
IOMm tae lmg- and?awdiumweve-bands are used, the chart-TAaRO soils samain
4isd. Tt is agaipped xi?L'h inductive vernier tuning, n me~etie cabs erhlch
sia-es Taithin the ahact-xenre coil ar Lha oaaillatar.
'Vibe f1~M is the second tube and apsrates eu the IIr ~plii"ter. 'ate
thisd tube !e also a 2E211, erid serves ae the aid detector pith a regenerative
eixesit, Thin egetam is Deed because a Dattt:r~ diode-tx3ode hcs cot boas
davsRape3 to rapisce the 2~ tabe~T ulnae acreeT:, ~"id is need as art erode,
xhi7~ tTy plate aerces'as ~ diode d-~teot~~. his nrrangament daae uoL give
the beat; paseiLle reanite.
'ms grid dstactac hiss to be ?r8 se~naitivo. 'fhie ceaeitieitf ie greatip
STATE ~N11W I ANSRB ~~Y_- DISTRIBJ"ON
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4.9e Hams time prevents averlmding of the detector during the raceptim of
ert3'mB sigaeie. Tee volume cmtrol ie located in the grid circuit of the
ootpat tube,
7ha type Of ontgut tuba depeade on the taps oY loudapeader used, and cu
Lha volnlee desired. TS eYOaasive emeumgtim of poxer ia.no ob3catim, and.
the cirorsit omtaina a loudspeaker (dynamic type) with a permanent magnet,
on 80-244 tubs cxa- serve era the output tubo. Ii.n 2%71 tube ie ~iaed a? tke
output tube, the pover acnaumption ttil.l be less with a proportionate ~aosease.
oY vrolaas.
increased due to the greaence of a feedback circuit. Th? use o.' tae Poed~
bao3c circuit also permits easier operstioat of tlsi fit?ot txo tubes, xith rho
result tbat ? laHSr.platc-?ugp7,q volt:4vo 1e r?quired, and increased etab19i1:s
of rho receiver ie obtairod. The %ocsQiisslt circuit ie ragulsted by a variable
eai+scitar .
Resiatanae R7 9n plate oircuit of tho deteotar tubo 28?3~1 ac?Ce Aa the
load fosr high ii^aquemciea. The bias voltage that !a devalopod m
the grid of the detoator tube during detectian is co?dncted?through reaiatanoee
and $1 to the control grids of the mixer tube x-242 aAd the fist Z~ tube.
e crate tc s certain degree ~ * ~t automatio semigitiv3tF regulator, atmd at
R-r;~i:~;sC~A
RED ~ RItTED
R4elstatLOS $gl in rho sateen ?cid circrait oY the cutpnt tubo !a fixed, i,s..
10,O4C ohms, xhen using eithor of the above-mentioned output tubes. 81ea
resistance RiJy varies, harre~var, depending on the tSYPe of tube used. Ti is also
possible to use a piatoelectric loudepeslrer xith this set.
A twbe Daum teko the glace oi` the 2821+1 either ee a d~vector tube or
the oatput tubs.
7d oY Yarte
.
v
e
a
igTMec. 'l5oa emQe ai tke ximdimgr are soideaed to tie loge (f'..aQ.goe). use
lags era glaoad ~striosi7y arou38 the airmmifa~aomee of the forms, and are
~ttpohed lisiai! wi`a! aLring xindiungs. Rll the coils, except the abort wave
oai16, are t~ dipped in p?ce1Y's air xas.
She two-gety8 variable oegaoitore have a maximum capaaitq of-gGOy~(
aewab. ghe band adlsaiooac bas 'P_'aag positioae. and ie constructed of tar
8-ssaticmal p]~tss. She ~ tramsfaamer ie of the retuti type Mhioh aperetec+
as 465 Mlocycloa, The foadasck coil (L17)'has to windings, and ie L~ouna to
the spaces bets the vindLogs of the grid coil l~yb. Candeaser CP4 Pith
ewlid dtalsotrio has s cspa~ity of 20C - SOOa1yF. She fil.em3at rheostat brae
s rasiatanos of lA ohae.
o~ the ring ?cesa plus rho ooiL le 8 mfilimatern 3oc soils 7~, Iq,3 end ,
3, l[ i[. 33 millimeYAra. She a-in:3 ate ail sine
xldtt for ocd
t8
hi~
~id3nge 14 needed. 7lray are round m tinge Haute of v_nreaod r~teriai 1?millir?
aartaar thick. '~Zt internal dismateor oaf the rings is 20 mi.liimetex~s. The xldtk~
twe~n the gladinge m Coii Irr. i[sdium-vsve soils are xoued m 2U-milll~stmr
disometer Parcae xi?.h irregular windings.
Coale L4, ib, ig, and Lli have edditiaoai epaoe pernutting a9Sitiamnl
AI'1 oirbuit coils are indopeadsmt, sad ere round m papwr forma. Rhamt,-
rene Dolls are vouad m '1717? imete~ dieoneter Sates ? Coii ',1 ie xouad ea
tliet eeoh leptar oY the soil 3e superimposed m the ane belay. Coil S.2 is
tiormd co thst theta ere equal cpnoinga bstxaoa the windinlie. C~1J. Z7 3.s n1.ao
rased xith epaciaps 'hatveen tbo vindiage. Coil L$ is xc~uad to the epacs0 ~o-,
'me tubes, ate.; ere mounted an a veneer ehoeaie neeen:3ng 260 r 150 x
6z aillimeters. i`he aides of thus aaaesie are suce?~ad by ecrtxa or Haile. The
. ~~sr~~c~~o
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 Sanitized Copy Approved for Release 2011/06/29 :CIA-RDP80-00809A000600200330-4
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tat ~ arranged In the. foilcviag ord~+r: the ~-942, xF tranaaformer Tl, 2E~1
tetDe, l'f YrraYSefora~ex'T2, dptec?;?c~' , tubo 21~, . ?~ ~tacnY~eat~,uattd PlrBsifoir
ti9ltLAr s 9E~M oe` 80-2L4. The enteomaa and gc~ound
lea ice located on tl~a rsa~ I+~-+el? '.ma grant pe~ssi ~ e~a~a7. fliea.e.
'fib Te~fi%at mo flare left is the valve o~trol, n~ezt caress the feedback dial,
4~te dial is far tunin8, rent caatoe thte dial Pcx vernia~r tuaiug, fo1]Awed
b~ t'~ bead eritah.
A11 atediaet- awd iau8-ravo tallae el'e ],aceted ~ tho tap, cQ' fire ciasaeie.
"mb ma co4L are laoatod next to tlw t~miag oaer B~ e+fnile 'flee
oMoi7E3atca? teai3a as'w laoatod act the alga. The oaoillatcr oa#,i is aaau~oted ae
fpl'Laebt 35e- coo ei~d. ~ the L7.4 sere: Ira oa11e ere ac!ffieotod' to ~ Qlp,
vi~]att tie atrier ends axe eecnoei~ted to ~fp band eritalt, Cctl? Aga aad
ante tMd4 omoeote8 to the eritc'i, e~riile trio oEber and ie aala[ the input e
Q ~ C~+ s reapective'~'? The cue sail of the I~ end L6
a~oait aro oas'created to tho 7=aa8 aaitoh, s-h47s the atlce~ aen3 3a a?
~p gppor and ~ the abort-rave oacilietar coil Irl ie comaroctsd to trio
,~ oandeorar ~~ ~~ the lacer send is attested to tbs band ee+itolt. The
aq~d aR ooll 5.g ie attar8ed to the e~t~s ~ the chart vane pailg':n
to fib awcii]mtc+r scrods a2 ~t1re teiGe. The uppor
the airoalt is attASrlu~S to tha variable caszeaoaear 44, end the iaaeo' erad
its s to tt+o bend gro r cob. The apper ~ oS tyre short-nave antenna cal l
i? woe, ~.]as taw +xcber awe ie attached tc the band switch. 2~e oaraeat
?n of t8rs amd4 Of the feedback airateit coil I,L7 ie euecmpliarhee duria6
tb t~ayl c-t the apprxatve.
It ie said tha4 thin receiver irili operate ao ve11 that it viii bo paoaib]u
to ]Isar tho taitro v: Dbaca~ in 87.1 panto of the Soviet Utricrn.
_3~
RSSRRICT~
~~ST~IC~D
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Sanitized Copy Approved for Release 2011/06/29 :CIA-RDP80-00809A000600200330-4
 Sanitized Copy Approved for Release 2011/06/29 :CIA-RDP80-00809A000600200330-4
IC?ED
a~rR~C~ED
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Sanitized Copy Approved for Release 2011/06/29 :CIA-RDP80-00809A000600200330-4