ELECTRICAL COMMUNICATION NO. 4

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Document Number (FOIA) /ESDN (CREST): 
CIA-RDP81-01043R001300170001-4
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RIPPUB
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K
Document Page Count: 
119
Document Creation Date: 
December 22, 2016
Document Release Date: 
October 31, 2012
Sequence Number: 
1
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Publication Date: 
April 1, 1956
Content Type: 
REPORT
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Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 ,C,O 10 STAT Next 1 Page(s) In Document Denied Q Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 ? CTRICAL C21UNICATIONS Monthly Scientific and Technical Journal Organ of the Ministry of Coe*aunioations of the USSR Tenth year of publication. No.4, April, 1956 TABLE OF CONTTJTS Pale Quicker Fulfillment of the Directives of the 20th Congress of the CPSU on Exchange of Television Programs between Cities A.M. SeaVonov and M.V.Verzunov - Raising, the Stability of Apparatus Forming One-Band Signals. 4 S.I.Evtyanov - Harmonic Analysis of Asymaetrical Pulses 21 A.A.Kharkevich - Theory of the Ideal Receiver 37 V.M.Rozov - Technique for Calculating Dispersion between the Frequencies of'Short-Wave Radiotelegraph Stations 48 B.S.Hhintz - Control of Radio Broadcasting Transmission by Lean- Square Value Indicators and Peak Value Indicators 54 VJ.Kuleshov .- New Method for Calculating Losses in Cylindrical Conductors Due to the Proximity Effect P.K.Akulshin - Increase in Mutual Interference of Circuits, Due to Reflection from the Inds of Third Circuits K.K.Sergeyeva - Decreasing the Attenuation in Coaxial Cables A.Y.Lev and B.I.Yakhinson - Displacing Signal Spectra Letters to the Editor Excerpts from Foreign Journals New Books Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 64 76 87 .95 104 109 113 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 BOARD OF EDITOR3 Editor-in-Chiefs,-candidate of technical sciences, A.D.Fortusheiko Professor, doctor of technical sciences, P.I~.Akulshin Candidate of technical sciences, B.F.Anosovich Engineer, X.N.Vostokov Engineer, V.A.Govyadinov Professor, doctor of technical sciences, I.E.Goron Candidate of technical sciences, I.E.Golubtsov Engineer, r.I.Dombrovskiy Professor, doctor of technical sciences, N.B.Zeliger Doctor of technical sciences, K.E.Kulbatskiy Candidate of technical sciences, E.V.Harkhai Candidate of technical sciences, P.A.Naumov Candidate of technical sciences, S.V.Novakovskiy Engineer, A.I;. Peregudov Engineer, E. A. Pdzkinn Corresponding :*ember of the Acaden r of Sciences, V. I. Siforov Professor, doctor of technical sciences, B.P.Teren'tyev Eg?neer, P.A.Frolov Candidate of technical sciences P:G.Zhipov Professor, doctor of technical sciences,G.S.Tsykin Professor, doctor of technical sciences, N.I.Chistyakov ii STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 QUICKER FULFILUv VT OF THE DIR. CTIVES OF THE 20th CONGRESS C F THE CPSU ON EXCHANGE OF TELEVISION PROGRAMS BE`1 E CITIES Enormous tasks were set by the historic 20th Congress of the Communist Party of the Soviet Union before the Soviet people. In the sixth Five-Year Plan, all branches of the national economy are to rise to a higher. technical level, based on a consistent and rational incorporation of the most advanced scientific methods and. equipment. Soviet scientists and engineers are successfully solving highly complex problems in technical progress. It suffices to recall the new field created around the use of atomic energy for peaceful purposes. In this branch of science, the accomplishments of Soviet scientists are so great that the sixth Five-Year Plan envisions the construction of atomic electrical sta- tions having an over-all power of 2.5 million kilowatts. We right also recall the work done on electronic computers for solving complex mathematical problems, and many other achievements of Soviet science. Our accomplishments in the field of electrical communications are also numerous, but we must at the same time recognize the backwardness of several branches of elec- trical corm,uni cat.i ons' Thus, in his report to the 20th Congress of the CPSU, comrade .S.Khrushchev stated that "...the level of development of means of commu.mication, N I particularly radio relay lines, phototelegraphy and television broadcasting, still do not satisfy the needs of the population and the national economy". In the resolutions of the 20th Congress great attention was paid to further and more rapid development of television in the Soviet Union. The Congress directives with regard to the sixth Five-Year Plan provide that by 1960 the number of television stations will be no less than 75. Special com~nunica- tion channels must be created for the exchange of programs between the television stations of Moscow, Leningrad, the capitals of Union Republics, and other large cities: Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 M QUICKER FULFILL1v NT OF THE DII TIVES CF THE 20th CONGRESS CF THE CPSU CN EXCHANGE OF TELEVISION PRCGRAI.3 BEN EM! CITIES Enormous tasks were set by the historic 20th Congress of the Communist Party of the Soviet Union before the Soviet people. In the sixth Five Year Plan, all branches of the national economy are to rise to a higher technical level, based on a consistent and rational incorporation of the most advanced scientific methods and equipment. Soviet scientists and engineers are successfully solving highly complex problems in technical progress. It suffices to recall the new field created around the use of atomic energy for peaceful purposes. In this branch of science, the accomplishments of Soviet scientists are so great that the sixth Five Year Plan envisions the construction of atomic electrical sta- tions having an over-all power of 2.5 million kilowatts. We might also recall the work done on electronic computers for solving complex mathematical problems, and many other achievements of Soviet science. Our accomplishments in the field of electrical communications are also numerous, but we must at the same time recognize the backwardness of several branches of elec- trical cormlunications. Thus, in his report to the 20th Congress of the CPSU, comrade 1N.S.Khrushchev stated that "...the level of development of means of communication, particularly radio relay lines, phototelegraphy and television broadcasting, still do not satisfy the needs of the population and the national economy". In the resolutions of the 20th Congress great attention was paid to further and more rapid development of television in the Soviet Union. The Congress directives with regard to the sixth Five-Year Plan provide that by 1960 the number of television stations will be no less than 75. Special communica- tion channels must be created for the exchange of programs between the television stations of Moscow, Leningrad, the capitals of Union Republics; and other large cities: STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 .x. ...,?..L . th , w" n *? r ..i.... u i ,' t F, ..cwr.t s. r _g., MiG wa.1 ~Mo recall the ?.. d :r t _. r,. tf,rs {, r aT c::? _ex , ~r,t .czi.1 K;1e :s, and 'wr~f n?"&nw c`: Sjit' w ,ri? "+partw. (oar c~ccc r ?er tJ v., ie . weIi e.. ctr ~cai cc:;r.wiicattors are a1o i u ercus, Yid ;r 3L sad ' ,. re r ecc. . ze he ackf+aardnes. ?f se r' ra1 brar;cf;es o e cc- LrLci 77 :, e? ,, i~ - ~iL Ri. . crt t?cr the 21' v1n r?e5s of the OFSU, cor~raae .3i.vK:r"Gri.. r;~ ev .a a ti "...the 1v~ At. `. `cf j + an of co u:~:i i ,. -.~. . f,.>'.~ dv~1~`~t ~r i 1.~'tt~,orf rart,a.c.:iariy : a:t.i.; re~.~ a7 ? ' #ec~uzr~~r~~?~ h r and b ~vis.;~n UJ {?v.V 1`~'~Mcv.;Fsting, :~;,..~..~. - .rtt~.w'cT"~~,.a he t I 1 nn of no less ciaECk+~ ,. than l~+ C tqu. a+d :i#o ter3 of these :.ine .wring the the % n awr~..~? ltr~~~,i~~s %a t, no .~. . coming five-year period. in conjunction with the resolution of the over"n~ent, 195E should see the con- st.ruction of a radio relay line for television exchange between Leningrad, Tallin, Riga, Vilniu$, and Minsk. Plans for radio relay lines in he southern and eastern areas have been initiated. To realize this large program we rust begin i ~ediatel y to carry through a nuun- ber of strict taeasures. First of all we must speed up the deuelopr on t of the radio relay equipuent being worke?i on in the laboratories of the 'firistr c: Co unica- tions, and at the sae tie see to it that the ratio engineering industry joins in this work so as to assure he most rapid organization of production on the necessary scale, beginning with 1957: This can be done only under close cooperation between the institutes and construction bureaus of the Ministry of Cornnunications and MRTTP (Ministry of the Radio 1 gineering Industry), which should be realized irnnediately. The Congress directives make provisions for starting color television. In the 'last cities-yea" Plan:, the laboratories of the MRTP wasted a great deal of effort on designing color television with alternate transmission of colors. This syte;i: re- Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 qtai:d video . ~,,~ ~'~1..~ band tr ,,. .1i1, ; ?ekCy~: ~t :$R wh: cil Pk de .}{ i11? }~~f i,if; video ?t s'~~Lssri to tansd.t wo1or tc tfv Cvfr wf ar~p not Gltine a Cfai... a~.~e~11 ~.,,? i(, i~li~1 ~). F~.!':- !C14~ i.~.L s3 ten .r~31 t(. + ,. iI',> 6, r te. and ;'(.i.' ".i"L?:ue x!,u1atoor. t~sy e wry in the balarRci mod; lator r's c:I .... ".r,' r. t?i parameters or their charge during operation, ';o rc,l'dE~t:tJc .i. ;r. .h" "i r- / fa of the feeding io i,l.a e2 in tt'~ 4iii1Iac~ P'.. Lhare 3 in xc,. :-g ad ~?. latin voita e , and by oey rai other f:tct1ors. Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 a+7C +, w ~a4.3t ~~ ~ r .ry IJ ~~.w eee~~ f;Sc ~.uo a..d i ~. PIt e,~l,it r d,i~I l.~i~' l rw~',..+.tdt) 1~ or7 ~.,.~., a - ts., r+p~t.s C,. ~i' tt1(R t: r 3 ':~ il?1d i ;..:1 1 kr1 w, the h, she riot rv;{?ri~ of th 1 curet i. '-1, " T +Y rm t>^ r1?+ . .r ei;t. . a^ the '!."nL?.:r~i;3,ldry' of t,4:4', ::d4: i T'a7u .i nCy v' a3:ria"t s Th cort.ant a of tho p 1t. '?'' cat of i t .ibA at rctu1atEnr: f uctuateB the 211d:.o rrequecy rou:;d it ::ieal! of 'mean I r. .~.r~Y r the tubes chances by a r rah 1atudo E3; now the r:et"?n va t..;e of the F'' ate current ccr,s'vant ci !pr- nett also cha:' X43 Then, obvious value of , the carrier-f reruency c zrrent r: this branch wi'_. have a and the current 19will rewat constant. Since wA nvwd h.a.ve Z' t : the load wif show the difference between these currants (he remainder or the carrier-frequenc'v current ) t I. Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 rltx t-~f ~,ur1((tttc;,'tr'~a'uir~~t t' '~ 11..,,4 fee 1b }? v x: P a u~ w r X rY u .1 ~. d.,.t 1. ~[;x 1 Z?, n . iAr? n W ~j? ail ~ti~lJ 4 ?, 111. .L~lc C,~n.L 1. ?p 1!'dc1 a F } balanced l ah t hv'r t a r c'.c t,. t;ie "~ . .. 1dJTI1 c'1it, t. . -t a:?.. . , ; . . _ , , ., . ,. , t, . 1 1 :.. .... J R tree: t h_ i ` : ?..b 4 ? r-'..:.:; ~,. l ,. ./eJ L" and T' 'CI rl .. Jlai k?c.1 e on the of ~ ~.110e li11crc1.s .1 / 1 i.. c~: ,e? ;.rd c i,h f~~M .A ?rtd U . ,.._ lar ?1 .. 1:? t + ? Jti'.~. C a4E){' s 1,. 1. I ;hC: (rlt. ?:i 'rti Cl:: ; f' ?,' ;' ~li'. .,, bi^ corrotl ~. S.~.~ic~ ^;~1..... .J ice;~ J .w ..... M w1 load 15 uecr'0a3eu Lc a r ea1.tr t;xtryv than 11': the j r '' .c: s ca.rcu t? oj; :xQ ~ L ii t OJJi: .C:i Js ? J i c?;~r.li';,C . i v ici-i`'c:t gin' viii it air First ate 'iri11 ae Jerr~ne the value of h. Tr cer..r.g,ptri r~Z r1 rr' t t_h v;'l iii of the L:l.d` ? currtmt rctaI1 t colii o- nerat is 1 :; I . LJ ` i tea l Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 i /4Y ?u 1.~ l/.i e~ j?i w Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Using; eq . (21), (22), (23 ), and (24), ~e get an ecprcJJion for the relative charge in the re a1nder of the cagier-fret,ueneY current: Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 d-piate u~ t~erCtyc`st-itL of t..h ~:I1: the gr ~. ~..':t~ l:C1Gi'1~1 tube by a a;nttue ? 3, the pate current constant com cneft o this tube increase 3 by magnitude &I The new cag itudc oL th :ax v ~lue~ o1 the c '~star.t eornponeft Cher t ~. i ii d(y the i 1'J a 6w y ~le r r f- i v?. 4. a cur- ~~ arac.erg 5t C; ^:ate - rentwe:S`}~ ~ nr :.iV ~ 5 X~ Lt: e ~3 4h f.~rw' 7S: rh1.'..~C o.: tb , N~~ V o S1 .a' .t11 L '? :+~4 ~ i/ i S4 first tube C Y~ ? g:S J 1/o 41, W ai?.ie c f ~! 4 :)SIi,f~_u a n d the $oCOL d t f e to a vaiiie of : .1 ~U(l9 ) ai:.n I~ivi.ciat~g e t? ( ,, :.L~ C) l ~i q. '.. r: m..., e M re, ict. +~7 q~fyp. z~irtlve ;, efy `t'~ c t tivene' of the e' c with y, t ~ep Vo L'ape 3a W A.~'n ..') l~ i,. t r 1 ', d, ~.4~.4w~1 ?i .. , . N ?. tiv?e FxI ~,~ba j~r 3f ;4 ~u I AaSyA+ --~,tYnl .al, v ~ Cc:rt,rect i. ....... rr~~+ r' l .--.r....++....,-~ti.? ti"ce C? A I a qtr 441"w aK ry It neceSS tay phase ccrrt i{ii- -~.7L3 load of the :od,1atcr, c w - 3 : the ~ L,. r&x% tree ~.i?ch the 4 ':.~.>.~.`. .. ,. .. :4:w.,r r iit n he ~ vhY~3'x'..1, .,, n.r? Yi.i'? ~;,~~~~ r.A.s,i, ri.. .J t ...u G~. of ;;9>r..~.~ Ott .c}"t7 order as r+~ tuth~ 11~ tti" -- r. The .... .. .. i?~2 , c', "'tia- 3~S?=B the '1he ~'~,rr ~.. tive feed} ' cr< coi neetiOa? with ,,e dio l . r Yr .. L.~~ r.~+ cL~' - tit q ~l.~y ^r Div n a a.1 1 .ay,. ~~,~ ,.-oi. fT 1 v ry. The `T w....^ oV.e brlir.c. n .'.1 tiv e f ocdbaek relative to t h+ s~ dt- r r. erg c~ the in Fig?3? ~lli1//~we4JA to realize e ryiiti Ve t eedback re? a` i', c to the 7c :. r vep' t V Y 1~1:J ...i 7 > R n r u v In a.na1yzi.rg the o~ : the circuit, we will 1ii%.it ourselves I+o the ;.ir^ :~?~nw..... ratiOr' . o pie care where the rraodulatzan is rea1tzed bit the voitage of ce rc':uenc . h3 shoxri above, the amplitude of the currents of the side a rCq~:enci.es is de- termined by eq. (6 ), and the component of the audio-frequencl cu:-rent by eq. (10). Let us suppose that, in one of the branches of the balanced r;odui.ator, the grid-plate charaeterastic of the tube changes by a magnitude S. Then, the a,TM` 1itude of the Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 i Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 As: a r ?rlu1t, Fm wtC it. ~ :, i a'i ilo? re #t1enc i' voltage will be x enratet at the tier Ri. F 1 the 3 ij yq-~T' f 7 1e c r~'' ther.. is r he of .~~.r:al.s,c..y ~:T'c corresponding to he cross-over indexes a~ tae first circuit, Th I f~ the product of tangents of the type tanh '3 , y nS corresponding to the 'crass-over irduxes of the second circuit, t (T f 2) .c ? t t~ - 71 79..'. Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 We 4U dcsijiaate: that 1asre, and K' denote the connection factors between circulta for the near 'a.nd far ends, respectively. STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Further, atta1ogaus to the above, t where rr~risforrrtine: will :eld' riff #w)I f II) Fi? 'Ii 4-1 When the ends of' the third circuit are c1o ed an the c rr ndin? wave resi3t- once, the `shield of steel circuit, when 'crossed in an rrrangesnent without identi- cal di a indexes, was detez ed from eq.(L~) see (Bib1. '3 h ?1r1 1?1SRI r~ F(3 4"I(.ifs) 1 ~ co p a son of ects. (8), (13), and (ii..) t i t au these foniailas contain term - (F _ 3) which, in the resin, docrcasee the riutual s ue1din of the s wee/ circits. Let us core the 'es'] s of calculating the tua1 shieiddin..g of the re n .ning circuits with. the data of reasdrements. T&f circuits; ..circuits 14 ,j ) Raining ry.ing The shIeldng calculations wore conducted fo: cme of the interference cowk eits, u$irg eq. (S )., The neasure en tJ~ were doge by sspec.it.J.is7 s at the T&i,IIIS on an exraerimertal line of the M .riis- trey of` Gouucauians, on the-GoLtsyno4.itl ino sector, between the sixth and seventh te.e1 cu'- cults of which the sixth is riot crossed while the seventh is crossed b y the index 3 wi the a length of the ele~ents of J31 rn. The length of the exp7iimGnta1 line L3'..:l21:+ eiC eats, i.e., 16.13 km. AU the third lines both the steel and the TsM circuits - :ere insulated on both ends of the lines. Ln calculating, the parazaeters of the this steel; 3) Steel circuit fo,12 not suspended valent' circuit were adopted as equal, to the_ parameters of s copper' twa-con ductor Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 circuit, d I,, uma. The ma itude of wds adopted an equal to E nepera. H.. ?;m. pS 'taciip in tle csoatt.ans wnr~ adopted on the bajs f tho 4osciUatiorn period of the magnitude of Al in eci (8), i.e., above 4.5 kc. The the- kttiatica.I curve ('Fig'. 5) wa~a constructod in accordance with this. The measurements were f~ Mi. t 't rAkM~-k ISM ~. a v '"-r M l p ~".w.~ n~ 1111}I w.:~rv .r v R d t? ?4 4 36 " 44 ga d Fig, zzda over 2 kc' arad from these c~xata we aloo coostr 4icted a curve. These data also indicate that, under the inn-. veetigated irasu.rLug conditions, the in role ' is u by thv'' current ,x.:G`rr.r..:.g t0 the al" end of A compa.ranon of thee:curJes shield and its absolut the second circuit, due to voltage reflection U3 from the ends of the TSM ircuits, since sh1 eld~ as deter hed front eq. (L; ), de_ creases evenly over the entire `reuertey garage and has no osct fations. On the other h "?""` f`Io"~ing t the facer' d over twc other path e [of. ~ri, the , presence of voltages x.c.~.,~?x~? --- e s ()3)&id (iii)], at some frecju.encies change he absolute magnitude of Sshield~ ob- viously because of the chi phase of these voltages relative to the phase of u voltagee 'from U30. 1st practice, when studying the atual interference of steel circuits arid TaM :circuits it must be borne in mind that the TSM circuits in transit - pass the apli- STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 _;, t FI u kc shows that both the periodicity of the c3ci].iation values alaf tie carves approach each other rather Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 I Lying ' point of the steel circuits; therefcr~, those wil1 be no repeited reflection -of voltage :wavee .,on theTs}t circuits. As ahawn by , F'ig.6, t len th of the atapli.fy ping section or the Pent circuits of the order of 200 krn, the attenuation of these cir- cuite at f 25 kc 41 be of the order of 1.5 neper zo that all addl.tional reflec- ted raves, except the fundamental ` waves, ?11 be attenuated. . ~r~utul lnl~erfertce at theear d date t ?ection afiuront aril~alta e ~~ eves f r the ; l+~d.e a~ '~ rd (~`irclr:..~ t s The reflection of voltage waves fror~ the ends" of third circuits results in increase in the interferernce at he new" end of the second circuits (ib1.3). Figure s!o?~a that: the rcflocted voltage wave U30, nosing over he third cir- - t,1 .,~.... ._.. s- c~sit .ro left to eight, will generate an interference voltage ' ~ , san the near end o.' the second circuit, in A1 addition to the "roitae U29 which ap ears on he near end of he secor:d circuit, due to a direct link be- ;wen the first and second circuits. ?his additional voltage will ha;e a greater rem ve effect, 4i e greater the dis?.aance between the first and second circuits becoNes. For instance, between the first and second circuitssuspended on the f .rst and fourth places of an eight- . place cross bear, the c,zanti ty o = 7.6 nepers, tnd the g tiidc J32 - Bu + will have ~est tl~e e a e appro ^.ately 8 nepers. In other words, the ~ltage U? wil , . saxe magnitude as the voltage lJp, in the absence of cross-avers in the first and second circuits, If, on t:ze other hand, the cross-over arrangements o t'e first ...,a aan.nn4 cxreuita produce, 8uUzltansou3lY, a 1~2'ge 'negative effect at some .fre- rr many times larger than the voltage U, ; in this c~aerrcles, the volta~~ fI2w Haag be d bQ}~1en the first arld second cir- fln th o near case, the transient attenuation an coifs will be dependent almot3t exclusive on the reflection of voltage waves from E die"ends cif the thud ciro is sx~d may be considerabl * 3rra1 yr than the magnitude Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 0.4 ner ' 5.7 nepera, we have ,, 6.45 ner3. that it, between some ? p "quits,. o can obtain * i3 . at supers is determined a 8) "VP I Other iao, in this case we can I ei dt a negative crass-over effect of the rs and second circuits equal to 1.55 nepers. ? _ _ At 5,55 nepere, this negative effect cols in the conductors of the third circuit, the cross-over arrangerseat of each. (n WYY.?Hru1(~+Ign'C+4Y13 -0Y.u Ni 1 hr _ .V.. 1: 't nit of she first and second. circuits should give, over the entire range of the ; Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 hould not cssceed 0.`9!: neper. The strictest dude on the cross- .laver ~rangt of each circuit is de by zmtual tterfercnce of circuits at the value. in fact, Fig,.8 zh s that, from the output of the first- circuit azpiifier to F~ the ixnp t`of the aecs d circuit amplifier a1/ei Of transient currents of The tua3. shields of the circuits for this B, ".tJe { rm e o spew , a o, ,', to . king onductor (?is.i ) . comii3k.?J a 1arg~s it i,:de~ of t~.,.:i 'Y .7. kaI, i/5;:1R.i ,,D t} y wires . The resistance of the split conductor, as owj. ira BibI.4, is c+astpased of ti Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 the ser o of t1e ' t conductor ,, while d1 ia'he dineer of the `conc1i cto ~ ,.. . wares ar~d ~: tstant pac in ct ai fi c enL ' tt,e pas aentuaI th e n resistance Of iI ) in ec1ect1 the shape of the split conductor it i.s i parta~ t that the value is a3 low as possible, then Q, -, aids The de of A, at caxiatamt n be re&aco oos1 era ]zy by re- 04$0,: n >fs accarc4e4 by al. increa8e ire the tern , crhich .i dependent Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 *an e due to the pro trait' erfect (n is th total number the.; c c+iciert,e?, to ratin ar the crt~ee.;sti"~ re of the capper to the entire. h.e bplit cor, ctor, together with the frequency change, will be proportional to the .gn tude of , A i.e., to /1 rn. Ntflr . . fires, ;t the ?requencr go1r,al raouid b a~ sm ae ppesible' Qri the other' hand, a redztctioaa in the d cing the diarneter of the wires dq (Fi .2)? }kiw ver, a reduction n do 3t a constLt diameter of the conductor dI d canst it' insu? tion `tbicknees d always results in an in- crease in the rawrtor of wiree n. The increase in n can be Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 II R r ? R?11, k (7) the reeistafCe to direct current of the 'sold coAd ctor. % th ct dam- ter ,..ef dl; k t eoe fi iC*tt, characteriZif the M raase in.1en h he wires, due ~.. { . to the dndin. $ince and, R0 depend on n da. ~fforesiti3 (Fi .3"`), we mist sel.act are c;Wj-n nm` rivestigatiOfl of - >v . nu fiber of cares will vary. 0^z `p 4 ^r Aga, ~j~. Ii, ber of -^ee} W11.ch si ltaneOUB ss~ ifli2i1rn va,)ue ror these terms. A study of ea. (iz) at mires i sk,cws'. t the ruirber of rires should eq a1 si, ($ Apr ^ -f t"rc&i his ire see that, for different the op- The cuter of se1ectt the. opt:im~ur nuiber of was is of jjtere$t in the wasp where he value of the ter z Ro and AR ea,(i~) is identical, i.e., where the eery 1ossGs caused by the prodiiiity ef- f ee t are eaensdrabie to ar higher than this losses caused by t e surface effect, In the case where t1 e resistance of the split conductor is basicaUy deter .ned Fig3 c. f5X 1os$es3 due to tie surface effect,, bons 4 t d~ and f dl' 11 is pointless.' Meld d? A jcatia l fear if t' COfdUCtOr A split conc.btctor does not alb ve a lower rea;.et&fce t ii a solid ccnduc- 'SOS' of the same deter and operating on the sane frequencies. In other words, it ...: . , -.? -- .. ; 8 flat. mys,ssible to rep1~ce a solid: conductor by a split conductor.If, STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 place it.., a. sp i :c Leta re Wei *i that the t urface ofect i , greatery tie a1o er t1 c colTe ti between the . penetration eph and the tr rn rver a +iirnonaicn of Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 6~"~"6YY~:~46 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 lCd) }I rD ~4r f ~' S ~4 etic etreaxn ;between the condactora and eqitaL ba expel b: tho &:ar Aso in losses duo to tine pro tttit cffe t, which 1 ses"..~ L.ay r by fai. X C6 i ..the iosscs duo to , thc.,s tM ace aetfoct..:. r F the above stat nts fai rs that a split conductor c be used instead of a eai&one in the .foUwing eases t .~ e the solid ~^ondcctor has 'a 1 diameter but transmits high frect:erzciee where the die fre ;tanci.es beginning with 0 ka ? The : L r?ger the `cUctrtcr, wh szr. 1ler win s this starting fro ue y. A 1icaticsl of Split ConductorW to Co cLz Cables About 8 of the total resistance of co tai crbi.es is ;t coiporcnt `si.st=afee of the `inside corttctor, i3ecauso of this, ?.t is advisable to zeplace ti.e' inside cor, ductot . he pricy and secaidary par?a ete2?s of cables with split inside ?4onduc tors ccn be caraprted from the fc11 od.n appro i to forr riia : e5i? if he rrable i sistnce ie terdiied he fo I R~ ?'~Y Apt uLk w836.` i ()'S)f .r. , where. o vCdt v. ?1 ' of Ld conductor 'is more than 3 nand is used ed far a re t ve]x s r& i range, its total .- ?+8,36? iii . rww? 2,: the en the Cable operates on hi ;hor frequencies, L]i resistance' of the split ini- ;side' conductor should be determined from eq. (4). . n&Lct ce. e wa that the inductance in coixia; cables is composed as the ,duct ces of the inside co tctor I, of ? the outside codnctor L, and of theme tua3: inductance I1,2. Since, together >dtit arise in fregtiency, the inductances atad 12 decre ase in ordinary' cables,; tho inductance is basica deterrnine'ii by the Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 11 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 In accordance with ega,(2) and (3), the converted signal is to be deternoined as. WE 1 ' t U)=R' ~S?(ub)s?' d~-. RC -~ 1Sl(u -U) ' d;,. Dette+_~ir ~ Sl(y) rrom eq.(1), we obtain from eq.(4) a direct relation between a been converted and that which is to be converted; 1~ 1)~ fiR c'''..Se "~+N- ~Rltlc`" di. The investigated operation is reversible. This means that it spectrum S2(i) of the converted signal r2(t) is reduced r the frequency scale by fl, we will ab. eration of the upward shift, we can es- be converted f1(t) and the converted functic'a t2(t) in the folloxin waly as -U) -;Re e,., ir' ! fi'.f t;u- ii &1e iii tai. However, spectrum shift down the t e ;;,fie can, also be thought of as an 5 NIindependent operation. Here we exist exini4'e the problem farther. We have in mind 54 th . ..,wbee A, ..in, abao3ute . tude,:.exceeds_ the, lctest fegae~cy..i. the...a Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 .,i,, w. ~...k Lain spectrum Sl{) corresponding to the initial signal rl(t). Thus, re- garding the given spectrum shift down - w ~,. the frequency scale as the reverse op.- (8) the coxr~erted ai t2(t), we can omit the term IN(t) in eq.(8), Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 so that, in all caass of spectrum shift we will have ( 2(tw) . St (u- 4 (1)~~.~.+. S1 (' r-- Uh -.L w t'~ U Let na tind the aorwerted ei l f2(t) corresponding to spectrwa 52(o) as de- (9) The plus sign before it7t in eq. (9) refers to an upward shift and the rrthrns sign to a downward shift on the frequency scale. The presence of the term IN(t) in eq.(8), however, points to an irteverai- bility of the displacement p?rveesS in the sense defined by conditions (7); in fact, if the apectrum of the converted ai.~*l f2(t) is shitted by 1 down the frequency h(t) i?Wtt)si'tit. a're erre conversion in-this o*ee does hot lead to the initial eignal. Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 /Fide use, in37 in long-distance c'tctticno, has been aide of the method of s ,+w-brad t as iasiona via aap1itude mod i1atton, with aubs.quent riltering of 1 >J one of the sidebanda. In addition, in Sovtet an'i foreign perloaicale we rind re- ports in Mich the probii of awe-band ccinicatione ie solved in other ways. In an article (Bibl.5) we Find a method Sar optf'm aaplitude-phase modulation, while another article (Biblo6) gives a method of two-phase modulation and still and other article (BibL7) a method of tlutee-phase modu.]ation. The peculiar feature of these taethods lies in the fact that they all require that the spectrums of the signa1 to be trananitted contain no zero frequency or corn- panenta cice to it. In the first of the enumerated rethods, this reg4rement is correlated with the need to filter czse of several cloeely adjacent mrodu1ation sidebands. All the other methods utilize broad-band phase converters. The demands made of these are very rigid since the etfectiveness of auppresaing the urnecesaary sideba?d is deterained -. ...by the accuracy of phase switching in all the ccasponenta of the aigr~a1 spectrum by .'one and the same angle. It was thererore not by chance that a series of articles R eared, discussing the theory and calculation of bror?d-b d gee converters. Thee. articles ahow that the teehnicallly attainable accwacy of phase switch is aaa~11.r, the larger the ratio of the highest frequency of the sig~zal to the /arrest 4 zt 7 beconea. Frog this retu1ts the neeeaeity for the above-formulated condi- tic. m- `f'ta the use of the enumerated methode of single-band c,icaticrta in a nu , ; fiber of caaes, e.g., in $tototelegra; y, tranaaaiasion of high-quality televielon pro- ~grema j etc., i rendered difficult since the signal epectnnn encanpaeeea frequemciea~ u "Uaetd xt wcridng_. on the . very real problev ing1.e- 1 t s aleeion oX ccm*unicationa a~tnr-1a. Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 The theory of sites with 11m4ted spectra is based o~ the theore by V.e: KatelMkov, according to which every sig a1 u(t) occupying a frequency band trim 0 toc can be expressed by the aeries: s fit! arc ) - e;) ~: war .~ n~ .. The sect irnr or this kind of sii 11 in the interval - 1 c seated as tollot8t We 4fl take as the initial sigia1 to be converted for transsnis3ion in a mingle- . ;band system a signal with a limited spectrum occupying the frequency band from zero to . The signs] transmitted into the line in the aingte-band syatem we will con-- cider as being obtained a displace- ment of the initial signal spectrwa alcng the fregaency scale by a magnitude Il (f`ig.i~). The ene.r of this signal exits only in the trequecy band from Q to , ~c which permits giving it the name "signal with band spectrum". Together with the ie convenient to call the eignal. occupying :1 Gitring the comrSrted signal and its band spectrum the subscript 2, and utiliz- Kia? (U) and (2), we get Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 l~# e~ttordto4 with th,,.. ?..e above stateatemts it r~utLd..alga ~ of intexest to s~al.ve k b1L + ~ .. ! .e b d c ic*tic is " as ma. to aiminate the above i trjc on. oanca e a~auUcatione eze are eignals with llitdted spectra, this solution mkt be found cm the basic of eome fndamaaatal' argots ixa,. thse hear .of e ~1~ ~ted speCtra. STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 SflI.1- 1$ r? there ' ~c is the width of he signal spectrum; ra! - Q+$ is the central frequency of the signal spectrum. (13) equations (13) and (14) represent, in a different form the breakdown of the sigma]. u2(t) with a band spectrum through ordinates an of the initial signal with IF spectrum*. They indicate the basic possibility of a direct synthesis of a sig- nal with band spectrum in terms of the ordinates of the initial signal with a I! spectrum, in which no lh4tations are placed on the spectrum of the initial signal because of the zero and adjacent frequencies. A highly graphic representation for the shift of a spectrum is giren by intro- ducing the concept of a complex, or analytical, signal (2, 3, 4), defined in the following tanner To the cc~plex function y(t) corresponds, in the plane of complex nu s, the .radius-vector P(t) (yig.S), rotating about the origin of the coordinates at the in- Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 , (I) -> ~i mgF (1) (1..2) In this definition of a ccsnplex signal, the projection of the vector fi(t) onto w,r breJ iorat f s si . With a band spectrum is discussed in Bibl.8. In its i m $e ai ,witb..a .bend spectrm is .approzi ated by. the.. sup serve . the ocMfficiente of this came ei t`;~4~. Q~~lt~ ~ _ M s f~ien; cos which coincide reapectively with arg'(t) and (t). The bending; fre:oy of the signal will be the ~s x~ ..~._y,.. td({) VJ, 1/{i8 W 9i4i MMi f` V . i (I) I i Q) kos (a P (tfl. The projection of the vector fi(t) onto the magi.- nary axis tin the basis of .qs,(l.2) and (L3) we can introduce the concept of the in- coincides with the real ei l f(t) eizioeby. vice of eq.(3) we have end itr5tanta6OUa frequency of the real ei gt~al ?(t), as *gnitude5 coincides with a q~ drature ;signal all of whose spec- tral ccecponents are phase-shifted relative to the spectral components of the sig- ', zlt) by an angle . Equation (1.3) permits i~ the cx signal F(t) as the infinite sum of in 'initei sinMl vectors Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 11 Made (U > 0), and also din the frequency scale (!1 ` 0), where Q, in absolute magni- tt does not exceed the lowest frequency in the spectrums of the signal to be con- STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 each of which rotates about the origin of the coordinates with constant angular ve- a Nlocity w. A shift of the spectrum by a finitude it corresponds to a change in the -'rotational velocity of each of the vector terms by (. Let us suppose that the. signal to be converted f1(t) corresponds to the complex aF2(i.) If upon` displace~tt none of the eleentary vectors dF(T) changes its direction of rotation, then: r'f f.1 zi?gj Euaticm (Lii describes a s trtsm shift u the freouancy scale by mag~ni- 4: 0 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Received by the Editors on 13 Sept+e ber 1955? STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 >_ . , , . ,_..: .. _: , ....,... describeS the re rS1ble Shift proceee. The process of spectres shift is irrever5i-: biG he rat~ti0f. dt atiof of the e1 '... ooponint .. "ta . of the ccz sign n&1 chimes to the opposite. _ ".2. Gebor,B. - JIEE, Vo.93, Part III, Nov.1946. 3. Ville,J. - Cables & Transmi s Qn, No.1(1948) , 4. Gswa] 1,J. +abse~ & .eeiOt, No.3 (1950) 5Te;e1baWi S.I. A Method of Raising the Effectiveneaa of Radio Coiavnication, . , 2hTF, No.17 (1939) 6.~ - (1948) 7. Stein,B.B. and Varganov,G.G. - Separation of One Side^.d by Multiphase Modula- tion. auchno-TekhaicheekY Sbornik CIS (1950) 8. Weaver - PIKE, Ro.4 (1950 9. Eoblettberg - J. of Appi. Ida., Vol.24, No.12 (1953) Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 'the reer sere at the Kiev tel`vd aiol center have succe tul) dated themselves ice the definition of the television picture at the outpat of the video to iltcyeas utter. After carry. out the necessary work in e ndins the frequency band of the r video t,ansmitter, the clarity of the picture in the horisortal was raised to 600 ;,,, ,,.w lines on the maw .feeder, this msking it entirely possible to realise full quality of the imer irnished by the studio equipment. This significantly surpasses the a ., technical ratings for he television trans i.tter used in the Kiev television center. We ask ou to piblish in your join the enclosed letter since, in our opinion, ., the results we obtained tight be of use to other centers using transmitters of the ssme type (}toscow, Leningrad, etc.). in Soviet television centers we use two types of video transmitters; one with modflatiofl on the t'ixxa3stage tube grids (transmd.tters in the Leningrad, Moscow arid q~; ) and one with motion in one of the tteraediate stages ......;'.Akd.~ V~.?WV+wi /G~w cva'icFrr~ j ~:. one ;(standard televiaion-radio station). _W+ One of the basic demenda made of airy television transmitter is that it realise the greatest degree possible the qu.lity factors of the television picture sup- In the circuits of second-type tranaaitters, this problem is solved with cc- 'd4`several circuit syste?s, to ob- parative ease since here it is possible, by tuning t , en characteristic for the UHF channel. -~`tsit- a rather wide tregn~' ~A?~. Of Circuits kill the rl pair In transmitters of the first type, which have o Orie .,, f#r*l IOdU1ated stage) the possibilities of expending the pass-band o this stage ~. ._ _ 54 . t limited so that the sharpness of the transmitted picture is also Med. STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 11 ceQter decided on a method of mutual cos~nsation of the'frequeacy characteristics t t ome e * ct ~- ratings w 1Ythie band a3i s at t~.5 which maces it possible !r w 1 1 fi ? .? - in t'xi *L h hQai ,. k y . ** tbw trot t .! 9.. M of the modulaating device and the Modulated stage. It was '1!leceseary 0 area e s rise in the frequency characteristic of the modulator' at the upper modulating t'5 genci ! (6-6 mc) in order to caspensate the drop. in frequency characte istic of the adulated stage at these eame ?rrnquenciee. The eyetema of two coupled circuits, used c in thehnal madulatid stage, has a frequency characteristic in the form of a shal- tar resonance curve with very smooth slopes, which permits the use of the above t. e ertheless, as the research described be3. v ha. shown, even in this case the ' problem, the Kiev televie~.on EkI can be OOaiderab3Y (incras. ; To sole this we began our work on expanding and correcting the frequency characteristic of ' Moe w4th an ICh-~. isntrt. 'The reme STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Taking into account that, to transmit 604 lines in the horisontal, we need a frequency band of the order of 6.3-6.5 mc, we first had to correct thee two stages. Since we hmd to conduct all our exp. to without interfering with normal op- transmitter by measuring the frequency character- istics of all the modulator stages. These measurements showed that the `first two stages alone narrow the frequencj band by more than 1.7 me ;cf. broken curve in r) Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 id tint *nd second etagee which serve simi tanec-u$l ca...rseerve er ipinent. wet. Q, t uted;be~ai c ,l according to t e....aiicui t diagzcau of the.. eetifl&.. eat and coett~ined the saeee tube, but the inductefce of the cols of grid and . , #, . , _ to b~oe-den the .utateaeaat lute. ne use y,~ i i't comecttOt was hereed eo as .. 4 those etag, despite a large number of e3cperi te- peri$tted no noticeable expaz-- } -. eion in their p band. 'fie was' explai ted by the a aU ampliticaticn factors of i the 61'13 tubes need in the first stage. We therefore replaced the tire parallel- connected 6113 tubes in the. first stage by five 6P19 tubes. The a plificatiort of this stage rose ~nre than 2.5 times Specifically, the amplification factor at a frequency of 6.5 mc rose to 9 ~rhen b- uaig 61'19 pentodes, instead of 3.5 in the 6P:3 tubes. After replacing the tubes we tuned these two stages and checked the amplitude characteristic of the AC a p]iliers (the first four stages of the ccxtuiator) Mere ,....'.x5 found that SSSS. 1) the amplitude characteristic remained linear within the limits of 6 at the spat of the first stage, which considerably exceeded the operating scope of the 5 -Volt signal. s., correcting the frequency characteristic of the first two stages, we pro- S ri ~_, of the .-needed to? partial tuning of the third stage and to a considerable tuning . 4_4 pass-bands and also ?- !ourth and fifth stages of the madule-tore ' so as to expand their pass-bands s&I to ?cre&te a rise in frequencies frost 4 to 6.5 mc? This tuning was done only tag ;-jene of ele*ents in the.codex correction circuits existing in the three above .. ___+_ ..,..: _ ... , ,....... t else. ..-- SS ..... the circuits of the stages heems s. .~-s xithant ahattgirtg STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 2) the pas bend of these two stages expanded by 1.7-1.8 me (ef. continuous The n to nts were conducted on the tube grids of the third stage of the Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 "!,'hit is et noticla~A, influence on the elope of the frequency characteristic, as we e~ theee, is mooed by ....g d ,..i tors; .. the.. est. advantageous (_ the poet o! view of the entire nEx#ulator characteristic) nuaber of turns was selected eiperi*ntal3y. In addition, a ,. .,._n_..... , ,, . _ogle impravent in the pass-bl was obtained means of tpl*ts i doctors. . Obtaining a rise of t,-6 rc in froquency represents a rather crplieated problem since cxtreme care azst be taken in selecting the number of turns in the correction coils of the various stages, and accordingly a great mazy measurements serif be made. In this case, one or two turhe are required. As a rest of all our voric we were able to obtain a frequency characteristic for the entire modulator in the for of the curve shown in Fig.2 as a continuous r line. Here, for comparison, we also shop s 1 the du ator characteristic before tunic. t ., \I ? Our observations were conducted di- . P \ 7 :rectly on the tube grids of the modulated 1% stage. Figure 2 shows that the pass-band of the modulator eras enlarged by 1.7-1.8 mc Fig.2 and a considerable rise was realised at frequencies of z-6.5 . a uniform frOq envy band up to 6.5 cc, we measured the sharpness of the picture in ;accordance with the teat table fl 9. As our measronte on the in feeder showed :the sheds in the vertical and he group definition was egtaal to 004 lines (with r ` the sate sbarpraeu at the modulator input). The remaining quality specifications ~i -:did not de orate at all in this process; The :t !erased for raising the shaspnese indexes byr an artificial rise in the f requ nc char cteristic of the mo 3ator: in video-t fitters with modulation in k; " the' tiny: stage can obviously be applied to non std transmitters as well, both' STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 u~ . : th a car oacmatacuction M goes in actai. 3 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Tec .cal specifications of cropho~e and amplifier: Ou'tpat voltage: 0.778 v eft. for 100 bar. tnptat resistance: 150 ohms Feed voltage: 27.5 volts ?irequency response: ? b db in the frequency band 500-6000 cps, below 500 cps blocking of 6 db. went temperature: *50?C maxiim. a drop in feed voltage from 27.5 drop bi 2 db. f The above. epecficattafll are ;raid for a temperature range frg -50 ' +50?C, , ,, .., 4... , , , .. . ~..N. .BACK s ~ -'1.--Ab.aa.tudes.?t~ to 15_OOQ._m... ,~,,~ve- dity of 95OO. ati Mr ~.~~.,,., ,~urwadcxc-pis 3rs not ,tine to .pdrtadic barring or ta, droppirL? .. , _.. I Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 va _ ~; a ct ...-.w. .,... _ .. bi The R*3az' Co. (u) ! pit out etic tcraphone with s 1.t-in a - 4 tier, The vibrationa of a brane made of b 11iW copper are transmitted to the amplification due to the The additianal magnetic 6yzbCtn by a stainless steel pin. M ).oar output volume of the inicr~rphone is aceampliehed by using a two-stage amplifier, working on semiconductor triodes. The microphone and amplifier together occupy as `rm-ch apace an is required by an ordinary microphone. The amplitier works under iting conditions so as to en3ure constant volume for different `distances bet een the speaker and microphone. h3 new microphone has the same output resistance and volume as as the ordinary carbon microphone, so that i.t can be substituted for the latter. The amplifier ie enclosed in a plastic casing ;,ermeable to air and water. Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 thickness of the lead-outs are increased. STAT Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 t~ ? t ? r*ea l rophone Is ri? a crier ~ tt on iur air-to ground c a& !n?, rc+ . eporatea reUably for, a, ~ periaci ~+f dame. , RectUier The 3*boratories oat the Bell Telep o e Co. (U ) have developed a eiUcon recti- i tier the siate of a pea, whidh can be used for reeding te1ephane stations with recd- fi.ed cwt. According to eorxpany repre8entative8, the rectifier is superior to all previouas dry reetifiere, hae an a1aioet lia~itless eervice titre, and can work for a long time at high eftciency under teiperetur88 as high a3 +200?C. Two Such rectifiers, provided with special casing9 to i prove the heat di.ssipa- tiQn, yield rectified current up to 20 aamp at a voltage of 1X v, i.e., a poster of 2 br. T'he total heat losses equal 20 w. To produce these rectifiers, aimo t pare silicon (less than one atom of iatpuri- tine per billion atomz of silicon) is required. After purifying the silicon it is mired With naaU, accurately controlled a ,ruts of additives by treating the silicon with vapors at hid tenperature. As a result, silicon with conductivity of the p-n ?: :type is obtained, used also in producing semiconductor trLodes. y i me cost of the silicon is very high, but only ma11 tents are needed. The pea-8ise rectifier has a strip of silica 2.5 long and 0J27 am thick. For electronic csputere aa1:1 rectifiers are produced this firm. ?There 4~, ..novrer rectified current is needed, the dimensions of the eilicon strip and the Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 A?. ., end Eaectroniae, their 'iecrni cal p4ppU c ation. Edited T.Ber~ &pd l.Sw t, lzd, AU Vii, 1956, l ' pekes, 25,000 copies, 1 ruble, 90 knpeke. This pfl1Ct prey for the 20th Congress of the CPSU under the general eu rvisivn and with the direct cooperation of several r a' ers of the Radio Soviet ` under the preefdiurn of the Pd SSSR, gives a popular description of radio engineers, and elsctranice and of the application of their methods in radio electronics, radio coarnicattone, radio broadcasting, radar and radio navigation, and of the use of radio electronics in science, technology, and industr7. Radio Relay CotputanicatiO s Lines. Collection of articles, edited by V.A. rnov. ,lzd. Inostrannoi Literatury, 1956, 584 pis, 25 r, 85 k. bound. This collection gives translation of 27 articles p blsshed in foreign journals sand d.aling with theoretical prab1ers and nethods in the calculation of radio relay lines, practical problems in. planning des and equipment, including a description of the TD-2 syste! for trap fitting six broad-band trunks it one direction. t.DJox, S.g.Riller, and M.T.Weiss. Properties of Ferrites and their Use in the :; TTJHF Range, Translation from glish by L.G.Lotnize. Edited by R.G.Mirimanova. lzd :nSovyetiko7e Radio", 1956, 99 pages, J r. 10 k. me et discsee the passage of electroeagnetic waves through gyromagneti4 Media in the presence of a longiitiadinat or transverse external e-a~aetic field; it ts with valve properties and s_ hand`Jee problems evolved in creating wave-guide eys ..:~, ?~ by .. M...roeara of otT rotating i~f2'.1G! Q. ? _ _w -trA rea1].'bed by -~ polar ulst r d c a. ~ ~rrYrvr a;d~d ~.4e .:+..-- - qde~ ic~ a 'vt=r, fr an G::iation plane and by means et other effects inherent to ferritee. w - i of Electros3agnetio Waves in rotropic r *G.i4oal. and L?Wasker. Wave-Guide Propagation o+ .. .. , . _oX~~.,t. Ts-aneLation from FZglieh by L.G.Loeiiee; I.kMonaeov and SGT:t__..__.,. .., ..,... . Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 their type and purposes. Their measuring limits and degree of acc+aracr are iridi.- Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 A tiret part of the handboc* describes 192 different types of electric men wring inetrsmeeate. The second part describes 40 types of radio measuring instru- me~nta. 1n describing the instr+nta, the author given brief information on the $ ~e field of use, specificatiols, and constr'actian of the instrument, and also ryAfwh Y I.o;rrfran u?. .u...... .uw Y ' ~- . #i~I - l 1. oetrannc Literattfl7, i955 9 pages, 7 r. 35 k. . - c eai+ee a~ e1 dzic vo- it e. with total.,..pack ,.. sd xe~ e e letieati i irrevereible eptra1e, and the application of inethoda from S.Sbcbrlkunpv and GJriue. Antennae, T'hepr7 and Practice. Translation frcm ] gii sh, edited by L.D.Bakhrekh. Izd. +-" yetskoye Radio", 1955, 6O pages, 28 r. 35 k. The book diecussee eub)ects in he theory, calcu ation, and design both of ra- dio broadcasting and coaznicatione anten , as weU as antenna arrays in the centi.- meter range. G.P.Shkurin. }handbook o-f tectric and Radio Mea5uring In3tr+ ats. 2nd edition, rimed and enlarged. Vayenisdat, 1955, 912 pages, 19 r. 15k. bound.. iruIicatea under what COST or technical cot ditiona it was produced. For radio mess- ;uric ii Str t$, the basic diagrams and 3pecitications + f the units in the dia-- . gr at. price 1i$t grouping the instruments according to Appendi.cee to the bock give a Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 tote of COm~ni.cr~ticr-e Scientific ItOearch Insrtti , of the )tiniot r Ci ~~~ sspecial~ f (~"!~9) t-nnoeant~ea OpQn~gafor g~to work for 1956 in he fo 1 : 2. elegiaph cc nicatic*is. 3. U.near-cable cce icatiaaa e i t? Com cations econcmic8. I.., T1iigible for graduate work scholarships are persona with nigher degrees, uaud- age O yes, having, induatrial a perience of no loss than three years t the ':particular special/tT. The application for graduate study imit be accompanied by a) a notarised cow of dipiorma (2 ccpiea ) ent 2 copies) c) biographical acetch (2 copies) J d) document on etlitary status (1. cow) a political and work record f rosy last place of enployinent (2 copies) .:i? z) iieaih certificate (1 cow) .w g) list of scientific works and inventions (2 copies) : h) paper on see theme in the selected specialty (1 copy) 9 i) two`small photographs. _; Appieatiohss will be accepted until August 15. 4 ...1 &ftraflce tests at he level of higher schools: on Marxism-Leninism, on a disci- `.: from the chosen specialty and on o!4 fob language will be given from 52-October 1 to 20. for the entrance. teota will be. given one month - leaveMwith. .pay' 5rt)i.iz, place of "fit to prepare' for the .tests in. accordance with .article.. 3 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4 11 -1 __w,__?,,' M ,~ M , ,, Stu.. titiedby the Soviet of 'bi ers USSR, in ,~ ' the etutee9 f~r C~rndun~te ~ Study" r* authsari.c .'lco trci 'boI`c ie the .? ! 4 i h7tQ. The d~ctuiten.t. , .. t ,tute~a ieeion to the wntranCG +ea ihatione. . aam~ ,~ j ~... ..,.. accepts. ~ for grndUate etud r .l~er th ?,+~ ions re .~ , ere 1 t uMer + ' 14 of the eStatutee for Graduate stuff' atad are bid to ::~ a at the Snstituta - the g of the academic term. The crederntial+ for ~. ...,h release fry .p,,`?#/~ter? f ,r ~+r~vr;~l , uica,~vu for graduate work ~ .. the t e .._ notice sent b' A4MNY w Yw w MMAt the institute. ale, outpaf-taan studet.te are guaranteed dormitory quarters. kppliaatians and re 4ete for tnfor tion should he addressed to: b : osk , E443; P'r aya Pnrkovay al., 7/a, T IIS, tell. 5-30-55; g 5-CK -31, Declassified in Part - Sanitized Copy Approved for Release 2012/10/31 : CIA-RDP81-01043R001300170001-4