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BSTJ 20: 1. January 1941: Television Transmission Over Wire Lines. (Strieby, M.E.; Wentz, J.F.) PDF

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Preview BSTJ 20: 1. January 1941: Television Transmission Over Wire Lines. (Strieby, M.E.; Wentz, J.F.)

‘Television Transmission Over Wire Lines* iy N, Ey STRURDY gad J, F.WENTZ ntiitynesvvks sppase veal tothe euro of ron Pena coutg, Fogecincnt i Ha fa the penpeee ac Sr al ‘etweisinc of pues tesisn igpele ae cere far The Tig and eucuedan ofthe enpvent tol ase deed 606s The nei Te iced celts cit srmiaon vee coma tie win rpater vis et od of abt 2] megugele For {fea riety west ideo unmsinn f abomt 2 tne baad a mesenger Meda a tent tring ces lu (oe Repcbian Caoveaton sx Paedetia Irloe Ni a Ney ene em shown ogee le el eee le Terman P THE, develop of sslovson hereating fellows in the folstys of ly sedoresor inthe cure browsing el, nousorks for nee fomtectng feevison latina wel be very importa, Tw fact msny les ef the problem belive “hat euch nemo area wrt mecescy Fonuae uf Che arpected igh rel press ‘Chuaierable progress fr Fe devseptneit of a ie line teenie for Laie pupoce ns bees tle 5 scengcton wih the Bell Seton's stad of comnbloeurir yscre fr ue in wie rd Iepony. Data evi paslshed Taave Loca supplemented. reoandy by certsin tts and xpevinenss in the tranamiai of 44 television imeges, the ress SLovhich one resented inthis paper, This wl caver the tugsmision ‘huacerstis of Iaciliien oot fr intercity und loal dstebacion in Sling rhe te Tne wish mere used during the lelevsion broadest i New York oe proeatiag fthe Reprblcin Caveat in Patadelpbia dhring th as wee Jee, 940, Ts beudess was undeaken eile bythe National rerun Cotspany aad Ball System Corman a sn capetineat in “Fe Teetheratce of the television: sel, A large pct ofthe Capotimental Llitia uaed ere tanfaeinvel yy te Weeere Hletrc Company. Lose Haw. Consist Samm Tor long-is'snce brain ce nzmiseon, con yeaa ave certain tntura! actentages which bave beon proves pointed out. Tn eorron Peo anes AEE-E, mary 3, 1 vith all ongistance systems for multiples telephony, the carrier mated fof transion is caer and ts bec unl 0 be relatively straight frend. For lnyedctarce selevsion tananission, the carer method ‘Snneceary with Che presen cil Hm a asa Yepeater, deo he feet Vial sasuetory longdctarce tarsmision exnnot he obtained atthe very Inve requences involved In vileo television sera, ence for Fe —Poapap of on television the enste signal must be slsed boi w a higher fequeney. The minfulting moans leveled for thie purpise wil he dees fo Asti later. In this ection e wll confine eemunson to the transmission of broad band of frequesciss independent! f ow this ha! i wed atte "The tanaianon chances of el een abet ave ag be: kao Tig ts of te reroll Malinoe Wasangcon cea en sr utc warts ns sae soto ls ete oes Pn, ‘Romie nd Mmaculay Macatee TLase cals acces £ cone ite. Twn of thee are wad to uve sera bonkers ant tae Cail cn fesse Sr the pkatomaph 9 we ase nail ‘inner ie foeshe utes eokclon Tae ate ube mses eld fornreh “ameter yf tx ayaa vue ora elmer ‘he ecg of anecorthst"Tus kvea: o taps provies the eedsngpr agit iningandatn give wna shshiag. econ teetacng cots ie compass pits ater tee ost thei ve have Poperineie,ieavensateia namin alu lower atencation defo ‘alent te cctcesiace of he outec consi, ands smear ped ‘ov iesatneychamsacste de ogres necting Te mura ‘Heimer ute cnducin ssc eval charactors toe aaa Typ tet, euarlee ant Tpodanes characte ofthis cable 25 3 jSkton ef fcqueaes ay chown a Fige 2 apd for + © ae lene sal abi Repeaters ‘hb wilh analy lee vor fens ich vested, ised oly by the sae wih lisa a povided,” "Tk aplre Lik ave bee uit most mil ac we a ie yates re a8 “Smeg fier’ ant move ineaded to provide thw 4 logue aol sla ‘lcs oe tkepbane puree ow slnct <3 egeeyle Bad stale {seis teins ‘Pipe tchows ns of se eepore Te fs thoerotae eedbadk dee sxng al sted in faail sec sage ae walt des 9 tks Geese yea eh spe of Yh por an hs bees Weed See” "Ts top of seid us nhl acoder of ca 200 1 280 ‘hea oes an ant pane 2 ga 180 sats Hed Ei ate, ewe hes cal ny 2 ive aetok reba gant tame ile cove rough te seomert of heli lox as fnetipy equ {itn ibc sri’ alte uated shove, there repestercetnnrsweabact I nvleic teas stat Bs Pig. te Seren seen the eis ad Ife hen sal ay ban ner atte Se pcan, sar a Fr tnsamon abla sal fname we Lie a ote ach alt Seton, Ahmet ids of eee afte over he tedenacae feqoensy ied Gertp 260k) sound Unease ample wh about 1b db eden and TELEVISION TRANSWISSICW OVER Wis LUNES ‘ Aeon, Frum moun mete gd tI {Thi arangecnt ive the high ogres of teananion sabity ant Ensaty ‘oie for hn tkgote sree wth busied agile tater, Inautatrdy ats pesnt requires. Lill expeerce th tevin oneoistion afar intteesntiferory ernaace, he Ene stared Ii'Fig, 6 which shes anautcnents of 2nd aad Sed onder mofitin rofacs fs fio ke sida piel plier a various gavel Ain prviws hokad stems power fr operating th apis inary She the Sova ble fs naa ae oeto@ at shea Se acral ~ if E ost m octamer at) Regaation Toner to spate for changes in tena due to tomperture change of te conper entry tegen tae salir epsteanmatical by ‘Tete eka at cack ampli pct wtisk'eapeted fom ut cal Ia ths apse plat emuency of ld hee Ueustot along the ie the Non AC Ge sutpat of tack ampli, © high-tepsners highly eactve frp lei bdged onthe cin wv slc he pet Free hin aca Elie, reife! avd esto soared outpt fan ese Thevelatr rept i tuen ned to condos sanyo sre Sn the Seen URC tae ampli. Thr varable Gauaa is 9 very Sy thersisor™ mle up of cet endes which hav avery are nepative temperature cetcet of tate, Te ogustrieackacig’ and wantin n substan ly consti? Supt stage at te pt eguac over nage ef wou 9 input age ‘The fick cea of he pls lrg at ees Ue ve fg ft berate peoduce chs a gas ete reucac babd ‘ch away ato cmpenste forthe cmngs in onthe coe emma, ‘aximm whichis expected in a repester section, even thoogh the cable of the To lng ert eas no hn file oak te accra af emuation Feomit of transmit, lacey sin pementay sthctment © requie Deries for sch adintmnt Pave Fez tle u 0 le pins on che Stevens Pom Atmneapels etew wth teeta reals Ab, twat pls SC smmnran Yuk aT] i an ml ‘Hate hurl fe an prove ou 4 ke and ave wt S85 ke. Thee ceca ‘late the cout purarizce and tho oo for era! mjstmert Phone else be weed io acdaneautaaale rogue eso.” or Loge {etnies eapesed Gat edition ee reer ene ermine, pie ‘anlny vies el eae mere fan 10D en 30D Berarmovis [A conphte reper cong ames or cht of nai, cio pls ose me sly ais tua alae Faust efonanecs 291 Xa abo fe photoaph Fe) Sure the rl wean cf ena il aay ach peas {nese nigh gs orn aly abd esto er ae Fhe nophirra ofhep eee te aussi niin re a Sule ofl ah At er beqacla ce dydiidueosplage es STEEL ie thy each ew yn ganador. ‘Thee eag Sov elit maton Se se sas Tetefrence fom al sources, beth eternal and inter 6 verso in this aystm. The gest ection of sch ntelrece a rn ta nl and irom thera) alto ie Ua ects a cra dere, Tow eect ef lntteene fener sous tcueoaterod Beri Ge bone ae "heh the presnee fends hrandeatngeatme ea be rected ingorance ir lichunael sephory sod tderisan le ihe lege urbe of sadly rola 2a se appear cs uodom iaetetene "he wet verte sytee widen Smal having cutinoun spectra sch ermal fake, At Ue ung ext + nerow- dealin Stems ected. At The TEP cc fhe mine wos remain asco Br ‘The ct! neyo menesed dope pen fhe onal energy yl tthe apat sd the watt of te opeter, ie us conoling the eet of Ise ed Wettce tase andthe verve fhe otet of modieon These levee Intumares fretovel oes sags Thetrescht Save bet mad iedlente Cat ii practical any ths pe of inteorncewilia debi Lint ot Tang flphoneo eerie tein cto the pes pone aayls ud on thesystem, power egucncy odd tion proterts opine pocal attention, Sy evel lata ze produc as sigue sanceiced das to tho acm of note ia the stem, AS thse fre ama i ere i ey aa pet hy ‘Cannot rgr eren ofthe pace ofa song cir Sad one oF fort eal Sls, (Bho de siddaads ouce a wey dtarbing type ot Etescael bar pct too the lage, ThE pe of irtence wil incase oes er feseced, ed ey boone more cb ec bes Sicimproved, Opsyeomess az nnn tron however, has ben peste Ohi this ope of reece vida ecepabe ison pet day brent mage Dist in Vein Sages egal remem fn te a eqlpect on ai pach pvt sardine rat peglincu ste age or ents The ess nie tre tum ek of pnqeetualy etme pve and uence {eek te van This tube Ulver fe petape mre ally ress on ins of etal dlznoe fe of rans of rons pat ufhe gees Twang dente inthis pee ew tens ey fo che Ho tas of enel mulate feoee Le yun ty oto me secre seer to as "evo delay" Wikis gusty seston widely Uae 0 tol ference ta the Ute of tiation of non parr Ca ad, producing dts inthe fr of {Bags oc "esate nc re wlio hy ny tlssor ager Cass. Sand Wits Ahan wid about 8 eet vo eu ecco nthe rere sand’ horn dicctioe ima 4iloe, Sugar Intenoet rage Rens ‘perineat wih teks maviag pte ive coon ony that che ye isle evusin tg omatemect for ea ei ae fo sees but so thot thes af evs to sro oe cqueney bandos fe to 24 feel pcs unnotans hy many vosdalbasvet ot Sermal eg data ‘ucevtnat oss Costa. SraP=us As meatone shiv, uo tactical method has been four for tansmiting television over lng-liu! masial crcues in the video fequency range. By tie sacar method, however, se video freqienry bom may be vised fe a regn curable “or lewstieson, ‘To comerve frequency space, [TELBVISION TRANSMISSION OVE WIRE LINKS ” singlosiebend tnemiscon, of ore, is desiable. The actual method ‘haven invelves so » adel well haa nce it appears impracticable to select a singe sidebend inveving ven Iregurtces aloe a8 45 eyelet inany ther way. The peesnt eonal amplifiers pase a and Som aboot Stke toabou S100 e, The negon useful for television, however, ayer to be somewhat ss than theee meyacyesson account ofthe dicalty uf Cualcing the del esortion wae Uhe lower ge of thie b9n6. About 00 ke res alloted fo tae proper absping of the vestigial ican The camer war Utefore placed at about 3) ke and et television tnd of shat 2} ane nas obtained, If we attempt to move 2 3 me video hand up 300 ke in a singe step of movi, the elt sa ovelappiog ol the sides which aneleiy distorts hesignal. Tw eps modula tion ove Uerfone esinte to as ehowe nT. 8 The energy a eevsion syste is constr in The howe Frequencies on, in carer sjter, oeae Ue czser, Ta take mast advanlsgr of The oad gsr, the cree howl De a the Ly end where he fal feedback in tne aries fe avalible. ‘The Jour line Hig ih rate ce four Hager of salut, t90 at the svememiting terial ed ow at che Trevhvng tesa, “An caa be seen the swag ret modulatod with Carvcy ef sboat # megreyies de bons sean, pare of the are, fl poo of tae upper viebund, are seleto! Da baud de This bien] she sduated again with a eter of about 8.3 megaeyeles and he lower sched ager select. Ty this position of the size, hi & tke postion of wh i il he Lanamitted ver the coaxial lie, che inecueney which correspon tod. ia th Wisco signal at SID se) he ‘nai sdcbund ears Fn 5 to SLL Ke and the wet eb foes SUL ke dover 1 2 ke he recive tema ism genes 1 inverse the tasting to ina aed wll we be discourses. The aden taping’ is cc- Sra Ly tae fou Slters, two at the Laoag Wxmiaal aud 0 {Snllaronee at tho rosvingtereiral, acing cnunetion. The eesle ists ce the final etage of deroraton theca fm the esti Sand whi aed to the contribution fev the spel portion of the ain abdsband gives bck wry nels 2 waste! leo signe. This last stage of demndaten ie serompibel ina nour detector ‘The exe Flee amplitude atthe inj Lerma uf his Jlecor sot se a greter than the ampltile of he video eavelope of tae moduted sige, Ube Sint of cre hich as mid with the sideband atthe output ofthe frst molitor havig bow aust to achieve this rout. The ream for weing this noun of abetted cater ie the eatvely nares tiga eebnod—111 Ke v4 ldebond of about 2 me. With sich 3 Imeron vestigial sisbaud the quadistue component af the exer en

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