ic power amplifier

100 Pages·2015·8.27 MB·English

C. POWER AMPLIFIER
I.
DARKROOM EXPOSURE METER
www.americanradiohistory.com
PACKAGE PRICE R.S.C. STEREO PACKAGE OFFERS HIGH FIDELITY UNITS
FOR ILLUSTRATED UNITS R.S.C. ASS SAVE £31.60 PRICE OE £99.95 el -7i
ONLY LOUDSPEAKERS
£39.59 MONARCH FOR ILLUSTRATED UNITS
SPEAKERS Or depoelt 61600 and
12 monthly payments £8
Carr. £1.00 (Total £11100)
Or deposit £696 GOLDRING Individual Reo. Retail Priree
and 9 monthly GL72 GOLDRING GL72
payments 14-22 Transcription
(Total 144.98)_ Turntable + P.U. 68189
GARRARD 2025 GOMLaDgnReItNicG C a0r8tr0id0g e 612 21
Individual Rec. Retail Penes LINEAR 505 AMP DEw -iLthU XREo ll-PoLvIeNr TCHov er 61060
LGIANRERAARR D50 52 062 5+ A6 utWocahtat ngAemr p+li fKie8r 4O.A. Cart.r. idge .. £21173 5508 SEND S.A.E. FOR PLaOirU DRS.BP.CE.A MKEORNSA RCH £8870
TPaeiark A bVbe nLeOerU PD1S1nPtEh AwKitEh RTSr a(nInscp a8r"e nxt 5P"l a1s0t,i0Tc0 O0C ToGAvaeuLrs s) £64£1801 6.51800 FRBEREO CCHOULROEU R 'SUPER 30' AMP RM.kB .CII. I SAUMPEPRL ITF3O0I ETARL 61888185765
FANE ' MODE ONE' HIGH FIDELITY SPEAKER KIT HIGH FIDELITY LOUDSPEAKER UNITS"i
Inwcoitrhp orualttirnag al omw odreels o8n0a3n 8c"e . 13P,0.0V0. CG. aussusr rBoausns dS pecaokneer. Cacaobuinsteitcs dlaatmespti nsgt.y leP oSrtaetdin wTheearke vapenperoepr.r iaAtec.o uCstriecdailtl y telrimneed avoar ilaObilleed.
Printed circuit cross -over assembly with ferrite DORCHESTER (Illustrated) Sise 16x 11 x910. appr. Range 45-15,000
cored coils. Model 303 Pressure Tweeter, Acoustic c.p.e. Rating 8-10 watt.. Fitted High flux 13 X 81n. £9.45
damping material, Screws, Panels etc., and in- Dual Cone speaker. Imp. 3 or 16 ohms. Carr. 40p.
sIRmtreupscpetodivnaesne c e2d 5i8 a-gH1r5za - mo2hs mK, Hs.F zr.e quenpOycrmy D netep£.. 9££12 ..2(9T5 o5&t. 9£ pf1mro1e.tse2ht 5 ly) MhH8S eiigeoOg hhh`Nlpmy aA sfcl.fuk RlaxGeCg xievipHb erol esef s fsseSPmuri.ssrVoee' o . !C1tothw9.r eXrilecelu1oatesnl0irtexs.r ta9isHctiuin oars.nrno o.dua uspnnopddm r,oo exlu o.t npdRgue astt.it ighnnrgo wc1a 0b viwnoelaett.st s c.R oCaIilnna cgrar.e .n 1d353 05X1p-02 8,00i,n00.00 £ 0sB p1nces.9ap k.m.se3.r a 5gIwmn ieptth..
RSC G66 MkII 6.6 WATT high quality STEREO AMPLIFIER HI-FI SPEAKER ENCLOSURES MODERN DESIGN
Individual Ganged Controls: Bass, Treble, Volume and Balance. Printed Teak veneer finish. Acoustically lined. Sizes approx. Carr. gyp. per ene.
crairtcinugit I.cHo.nFs.tMru.c tFiorenq ueemncpyl oryaningge 2100- 2T0,r0a0n0s ics.tpo.sr.s Bplausss CDoinotdreosl. ±O ul2tpdubt. JPEreSs suSriizsee d.1 6 GXi veIs1 plXe as9iinng. SanEc8e Fwoitrh oapntyim 8uinm. perform-
TPpu.rUet b. lieom rCp Teoadnpatreno/cRle as± d ioo1f.3 dF3b o. troS eloleu1c5dt sopor ehsamwksiet.cr hoF ufoot-rr r8einsu. lHtsi -Fwi sitphe akaenry. 1.5 35 HSxE i-1F125i sxpF ko9rr.i n S. eizxec e2l2l en£t 6.47
standard 200-250v. A.C. mains operation. SE10 For outstanding results performance with 12in.
Attractive Black and Silver finished metal with loin. Hi-Fi Hi-Fi speaker and tweeter
fascia plate and matching control knobs. spkr. Size 24 X 15 £6.74 Size £7 87
FCUOLMLPYL ETEW IRKEIDT PORFI NTEPDAR T£SC IIR ICNUCILTU DIaNnGd x 10in. P'td. 25 x 16 x 10}in.
COrO MFAPCRTEOHREYN SBIVUEI LTIN TEADKIA GVREANMEESR &E D CABINET . SO Carr. AUDIOTRINE HI-FI SPE AKER,000 SY
se illustrated £1499 or dep. 1820 and 9 monthly payments £170 (Total £1760). Consisting of matched 12ín. 11 line 15 WattSTEM1S5 ohm
AUDIOTRINE HIGH FIDELITY SPEAKERS o hreigspho nqsuea liatyn ds pexeateknedre, dc rforesqs u-oevnecry urnaitn gaen d tw£ee5te.r9. S5m oCoathr r.
HPe8x.l1eat6aes vntidycoei hsdmec dso .fn rCsPetorqLnuuEece AtniscoSuynEr r. o rSuaLnTnagdAte.e T "suEDtp C"h HtiiognO hd1I iC5ce,Eaf0ft.0 eic0si eTcn.wcpy.e se.ct eeIrr amCmpoeincde a pnmrcoaevg ind3ei tnosgr. eHnFsu1r2Se6E sNurIp0Or i0Rsi n LglIyN Ere aSlPisEtiAc KreEpRrUodDuIcNtiGon . £6.0c 3C0apr r.
HF808T 8' Ex1c0eWpti on£a2l .8p8e rformHFan1c8e0 Da t lo1w2 c' oat1. 6W 1499 R.S.C. TA6 6 Watt HI-FI AMPLIFIER
HHFF110220D 1102'' 1106WW 8684 .6400 HHFF1122661 ) 1122'' 1166WW 6666.7265 2-200d-B26. 0Hv.a rAmCo mniaci nDs isotpoerrtaiotend .0 F8r /eq uaet n1c,y0 00R ecs.pp.oen. Ssee p3a0r-a2t0e, 0B00as eo .apn.ed. " . -2-
Trahie'lift and cut' controls. 8 Input sockets for Mike, Gram, Radio
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1P5L KEAHSz.E GSaTuAssT E10 ,I00M0P. EIDmApNedCaEn cWe H3 EorN 8 -O15R nD.E RING £3.85 NOW IN STOCK!
MODEL 808T 8" 16w. with parasitic Tweeter. £4.95
Response 25 Hz to 15 KHz. Gauss 13.000 Imp 3 or 8-15. FANE 'CRESCENDO' SUPER EFFICIENT
R.S.C. BATTERY/MAINS CONVERSION UNITS
TYPE BM1. An all -dry battery eliminator. Sine 55 x 45 x lin. GROUP/DISCO LOUDSPEAKERS
approx. Completely replaces batteries supplying 1-5v and 90v, Send S.A.E. for leaflet on this range of extraordinarily efficient units
tWo ITbaHt tLeDryIA GraRdIioA Mw h£er3e .2A.C5.1 maAinSsS E2M00B/2LúE0Dv. 6R0EcA/sD lYe a£va3ila'7mbl5e. , includFiUngL Lth De IvSeCryO UlaNteTst BtoA GSSe nCuiRneE TSCraEdeN DCOus t'o1m2'e r1s0. 0C WARatRts.. FREE.
R.S.C. TRANSFORMERS, L.F. CHOKES & RECTIFIERS 200-260v. /ssT.prero<ást and Interleaved where necessary. RSEECLTEINFIIEURMS
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R.S.C. MkIII SUPER 30 HIGH FIDELITY STEREO AMPLIFIER 'YORK' HIGH-FIDELITY 3 SPEAKER SYSTEM
BUILD AN AMPLIFIER WORTH APPROXIMATELY * Moderate size only 25 x 14 x loin.
DOOnlUy BhiLgEh TgrHadEe KcoITm pPoRnIeCntEs IbNy CleLaUdiDngIN mGa nCufAaBctIuNreErTs * Reasppopnrosxe . 30-20,000 c.p.s. COMPLETE KIT "M
*a PJaucskh BSuotctokne t Sfeolre cHtoera dSpwhiotcnheisn g FCoerr amMica gPniectkic - Uposr * IPmerpfeodramnacne ce1 5c oomhmpasr able with £23
a Neon Indicator regardless of Price. units costing considerably more Carr. 65p
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PACKAGE OFFER TM DISCO
GROUP/DISCO UNITS Units listed below
(a) 100w POWER AMPLIFIER CONSOLE
(b) PAIR OF HI-FI HEAD-
A10M0 PWLIAFTIETR S50P EWAAKTETR (c) PM'MHAIOKTCNEHE' SIN (Ga tDtaYcNhAeMdI C IMAncckoo.str tpCt oatrruatrtrinindtgagb elset ww§ iintah n ddG iaaSmreroamnrdidt o snSteyF W2o5r.
to headphones) Separate Vol. controls for each
(d) PBAlaIRck 5 0 RWeAxTinTe SPcEoAvKeEreRddS tFCuAornnCttaIrLobllIseT.. I ESSep,A aprlltauotme TinrMpebuOlte N fIoaTnrO d' mRBIiNkuGeg'
S1i8re"Cx a1b8in"xxe 8" £12.85 wRseeiats hi( nlieav ro.cl o.C voeclroee(nd.t roCla bitnweti tcwh.i th Bfllaidc,.k
(a)(b)(e)61(d) Carr. et '25 Carr. t I7.1
F1 `iP g I Tpmheoornmntehs/ lMyo ni kpAea.m ympDse.en pStsop seioat fk eEr£sI4 S.a 0n0da nH(dTe oatda18-l O0(T rm oDtthaellpyl7. 6p1.y11m72t-)s2 66o 6ra 8nD8d e p. 615 and 18
£87.00). mthly payment. £8 62 (Total 180-161
HMEICARDOPPHHOONNEES TWIN TURNTABLE FANE ULTRA HIGH POWER LOUDSPEAKERS
WITH PRE -AMP Ml power rating. are R.M.B. continuous. 2 YEARS' GUARANTEE
nigh flux ceramic magnets. ALL ('.0 RRIAIIE FREE.
R.S.C. COLUMN SPEAKERS IDEAL FOR VOCALISTS 'POP' 100 'POP' 60 'POP' 50
ATeawmTxvYle'lYctt PaehetPrEkyiplyep teEi Cetropi. .4nc.a C 1 ay1h0l35miTl0g y1e Ohe 12re nhm8f f tmlfA3seui sc:x0L6 i -Sc2e14oOnD230vtE 'e, e Sp lsrW(oeU. T wd86Io 8T A' ti f2AnaeT0 alBe R n£TdLwde2bES s2aai t9nc9 tFk 8e O )£Fh aRCo ni t1wadtBer l9rA Vd.c S. ybh9Snotaw ap5rGi-o.r U ITFsTmTpieAYeetrtnaRmPektd ..EeO : 8r R s3Df:C .o 3eEOup74Lrv. I (Ee2T£rC4S1aoT l2ta laR" AnSel O NdlO1s N1 eD891 W I4 Ca,Pm0.p8 0UAop80OBnr) To RtLChxGITlaCl.i yAnrS 6r eN.6p A 7 aXD5y 1pD15- 4 R £Exw3 Sga1Sitnt m8tD"h81 el/y41p1£ ,005p020n£a 06W 2y mga.n9aaedunt5 stt9.s Dme1£op5 n.1 "8t1 h2164l681y..00.59 80p 0000a W y mgaanaeudnts stts 9. 111352mmD,0"0oee 0npn50£ tt sh0g£ 1l 2ayu 0W as6sn. p19daa. 2t0ygt0-
Tt( fiYvleePd raEant idnC gp.4r rEI.0axn0trri ao1 e0hde0.a vWTye rAmcoTen: TsDtrSuepc t.i o£n1.1 i nacSn.i dzf eo1 u2ar pm1p2trh'o l6xy0.. wp6ya5t tstx . e 18p66e .ax1k 81e r0(e'T toAotrac loc ou8ns7ts3ie.c1ra8vl1lay.- C£ar6r. 5El FO£R2. 2B0A (STSo tGalU £I2T5A.8R0. ) ELE6C1T.6. 0O R(GToAtNal. 6E1T6C).. PAA( TLIIoR. t aPlSU U6R1IPT2O.A8S0BE)L SE
R.S.C. A10 30 WATT ULTRA LINEAR FANE SPEAKERS 'POP' 25/2 12 in. 25 WATT
H±E3FId8-6BF, I 3E0CA-C208M,30, 0P0E LLcI/3Fa4., I EAElRlL 3 h4i,go Ihnu0 gtpg2hru3layt4d. . e HsScueeonmpmsa iptrlioaevtnveee.e nlt-Bs7P.a 0sudeVb Ba a-.lnP vdRue .le l sTEprFohen8ibgs8lhee DoEtluheaeclrt r oCtnhoiacnn e OBr1g5a assnn ) . GC(fuaoirtrra . ru frseoeesr om(rT tohDtlayel p£. p8a01y01m).2. e5n ta, nd7 693
Control.. Beneitivtty 36 millivolts. For High Impedance micro
phones. For Clubs. Schools, Theatres, Dance Hallo, Outdoor Funo-
tions, etc. For Electronic Organ. Guitar, String Bau. etc. Gram. GROUP/DISCO EQUIPMENT PACKAGE OFFERS
IPsTtpEaice,Rtka i-Mk.u,e pSros :r .e DTt'tce w.ap piofnots .i-r th 'aln6'na4id x oali ennsddge p p9aep rrumfarotpoerona ettiheenldspy ,u c2tpos0a v0ywe-mr2i 5t6eh01n vt9v.s 0o l.5o.1 0f 2c 2o cM2/ns4t Or0AoN l(.,TT0 .H o pStmear' lam Gi3niU2st 2.Ae .9uRF0cA1oh.rN aBT3se E naE"dnm . dSCi k.1Aae5r." rE. o .a8 hn5fmodpr leafle£itY. 1O9M s 1 5 PTpPaRe.Ayr.mm .LFee.A:n tPNsDH EeA opPfSoO Es3Pi 4t .96230256 :.26M( 0T2 Eo3a- tWnIaIdlI I3.96A/ S0MiP.7nEP8oA)nL tIKhFiEIyER RS g62ß14485...96460b LPtA4 C5KA GraaEel r .P RICE
LINEAR T40/60D 50W GROUP/DISCO AMPLIFIER F.A.L. PHASE 60 MK.HI AMPLIFIER 384.95 PACKrA GE PRICE
******FR OFITIMCFOnnNUrweuideprcTLtiqiauprnv LmuPotu i pelAdsitanhc MouNco occakGOvEynkl e r eLeNoBrarst eulmsI aoeT o(tappa.JfrO soado u PrRcGn ta p. kemnIUureeN doieo I,t Gtdn3 caeT0kipr cuF r.eut2mePAtite0ob.. C ),lnUo0fe Iro0 sL rcp0 h Iola TisungnHpIethdErez o adS.il Cmk&o eur pyrbe,sl detaa hln icoeeri ng £49503 :Ce )/(Sr3eixmt0nu.ela , tpeld!a .s btliacc kb onded PTpPPTpF4a. RAea.AeAyFry.Irm .mAR.mmLLFsN e..,e: A :n EnL PtPNt 1.DDH.H P 2EeeAAO/ oopp2PSffSPoo5 OEE ee 33 llP2 556tt3 ..05188W633 0078101 L0 0 0M / (L(S LATTaaP//LSMoonnSE ttddPmaaAPt llEoL K99 A3I Ac3EF6mmKa8RMI8b2EEoo.S.8iP9RnnRn 82LtteS1 hh1tI ,ll F yyI ER 332261£268266'1846881 ..6...e799886606055 P£P£AA59CCKKL69 AA .GGa9LEErrM e5.PPs 2RR II-CC-EE
Gram, Gram, Microphone/Guitar P.U; plus monitoring metal case. Terms: Depoelt 316.95 and 9 monthly
rCMMoOcaaNmksteTeat Rr. S OVwLoilSt.c, h VM ooln. it(o1r) S(e2le) ct(i3o)n aSnwdi tc(h4 ).G rBamas a(, 1) Torer b(l2e)., Oap(Tnardyo D mt9ae lep mn6ot6oss6in t38 t623h1.l78y 57 0 ALTIL8NS0E O'A1 0RS0 TDO C£K6E9D7 5 pHAaLIyGmLeH Tnt W. QoOf U 8T1AO9.LN73IE T( YTRo tEal LX3OI1N1U2E.5D 2A1S NPDE VAYK9NE10AR5I-R5 5U FNINITISSH
FAL PHASE 50 Mk.III AMPLIFIER 50 WATT. Lw1a2tt5 h5i0g hW flAuxT Tsp eFaiktteerds pfoairr coofn s1e2r"v a5t0i ve £3450
cgSouonaltirrddo ls. atagItnaedi.n . s4tB Sadseasp maaranagdtee l Tyf rreocbmolne t raCocloclneiddtre onilneta.p lu Ptssroh toPerlctu.te.i v emO acusitrtpceuur ti tv ofotlo.r rOar tidnegpo. sIitm £p5e 5d0a nacned 98 -m15o nothhlmy sp.a tCtoa. rro.f £113.-5700. Total £3889 £'
Speaker/s 3 to 30 ohms. Size 17' x 7' x 75'. 200-269e. A.C. L12/20 12^ 20-25 WATT L13 13" X 8" 10 Watt
mOmrea nidntee.p. £o3Os.i5ut 5tp.£ u7Tt2o 55ta0 l &w£ 3a99t t.2»m0 .om nutnhiley raptaiyn-g . £34.95 C7a5rtp.. 1C135a ,r0or0.h 0m SOsp.l .in es £11.95 1oan0hc,m0e0s 0.r eqlSiuntiearstee d 3. imoCarp rerIdS -4 0p
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Tpaeyrmmse:n tsD 9e6p o(sTito t£a8l .9£58 2.9a6n)d. C9 armr.o 8n1th5l0y ONLY £5515 PRICES QUOTED -INCREASE FROM APRIL Ist.
R.S.C. Branches operate a 5 -day week
RSC BASS -REGENT NOW FOUR NEW BRANCHES Open all day Saturday
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Would you spend
GIANT POWER WAVECAND
an hour a day BROADCAST RECEIIER
SYSTEM
BOOSTER
to earn more money
OUR PRICE £10.50
+40p P. & P.
in Electronics - No Icon than S VHF BANDS. Picks
op Aircraft Transmissions, Pop Pirates,
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Television- Radio? Public Service Transmissions we are not allowed to mention!
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If you're willing to give up one hour or more a day bgraatitnereide sc, aoser uwsiet h rec a-crrhyairngge abhlaen dnleic. keAl pparlokxal. i scizeell . loFtin' isxh e6d f'i n xs tr3o1n'g. Wleraitttheenr
we can help you get into the lucrative growth industries of gHuUarRaRntYee ! . SLpine,ciitael, tm qagunaentticit ye arF -puilelyce gfuoarr apnetreseodn. al listening, dry batteries FREE.
electronics, television, radio.
OUR 1s28,9CJ' Tone into the world with this amazing world
And if you're already in, we can help you get on ! PRIC+5E0 pii .GP. d P raanddio .l oAok str-ulelya theexrceetpteti onwailt h usntiati ninle ssp esrtfeoerml atrnimce.
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Once you've got the qualifications you need, you'll be in a WAAKVIMEBBAON DS Scoenptarroaltse wtoitnhe p, uvsohl-ubmuteto ann ds elteucntionrgs
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theory and practice of valve and transistor portable cir- PgUuaBrLaInCt eedS.E RVICE BANDS 135-174Mcs. Fully
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portable and high grade test instruments). mi,xiuns by Fire /trigndr, Aircraft, Shipping, etc.
With ICS you study at home - at your own pace, when S ONIC SOUND LONDON, W.2. 372 E0D10-17-7 23 0094B0AD.
you choose, in the time you've got available. Your ICS AUDIO LTD 9C aall.e,urs. -6 wpe.mlco. me Monday to Saturday
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Don't waste another day. Take your first step now
Stereo radio from
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'Cs your key to the door your existing tuner.
of opportunity
a
I
TIinnittceekrr ntoearxt itso tnHaatoel u sCsueob,r jrSeectsetp wooafn ridtnset neRrceoesa tSd c,a hnLodoo nlpsdo, osDtn etSpoW:t . S2 342UEJ. . CAUTION LAMMPA XC UVRORLETNST :: 1763 romco fdvreeocrmAtoy dJoceeuorrr mmm epyoxlndies tuttoeilne bgtshu emaitl dot onawfo is ltltp uecanroerentos-r
for stereo reception whilst
maintaining a high standard
Subject of interest of reproduction.
_ The distortion is very low
Society of Engineers Graduateship (Electrical Engineering) (typically 0.3% at 560 mV
C & G Telecommunications Technicians Certificates - RwMithS 4c0omdBp ocshitaen innpeul ts esipganraal)-
C & G Electrical Installation Work tion.
The stereo switching is
C & G Certificate in Technical Communication Techniques Soo º 0 0 automatic and there is a light
MPT General Certificate in Radio Telegraphy + o - emitting diode which acts as
Audio, Radio & TV Engineering & Servicing 0 0 0 0 0 0 0 0 a stTehreeo kbiet acreoqn.u ires no coil
Electronic Engineering, Maintenance, Engineering and there are no alignment
systems, Instrumentation & Control systems problems.
Computer Engineering and Technology Fnoitrtminga.l lyT hbee m.1popdeudle orfef qthueir eesx ias t1in0g-1 tu6n evor.l t Tphoew seigr nsaulp ipnlpyu wt hisi ctha kceann
Electrical Engineering, Installations, Contracting, Appliances off hefore the de -emphasis circuit which in practice means discon-
necting one, or at the most, two capacitors. Any radio engineer will be
Self- build radio courses able to spot these capacitors, but if you're really stuck send the cir-
cuit with a SAE to us and one of our engineers will indicate the output
point. (This is the full extent of our involvement, no hardware please).
Name Of course, if you have a modern mono tuner with a multiplex out-
put our module simply plugs in.
The outputs go via a screened twin cable to the tuner inputs of
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And the cost? £4.90 for the Kit with 100% tested integrated circuit.
Also available assembled and aligned, checked and ready for use
at £6.90 (includes 12 month guarantee). Beat that!
10 Jermyn Industries Please rush me D Kit(s), O made up Stereo decoders.
74 Vestry Estate Ienclosecheque/postal order tor £
Occupation .____ Age - SKeevnetn oaks Name
Address
sAn:redited by the Council for the Accreditation of Correspondence Colleges LI3lock Capitals Please J
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There are 195
other good reasons for buying
AMTRON electronic kits
Apart from the five items Power supplies, preamplifiers, Only 1st class fully
Shown above, there are another amplifiers, L. F. instruments, guaranteed components are used
195 kits to choose from in the accessories for musical -solder is included with every
vast AMTRON range of elec- instruments, amateur and kit.
tronic kits. radio control transmitters and Prices range from £1.10 to
A few examples of equipment receivers, battery chargers, £80 and each kit is sold in
you can construct from electronic car accessories, protective blister pack containing
AMTRON kits are: psychedelic lighting equipment, complete instructions.
measuring instruments, tuners,
receivers, I.C.digital equipment.
Should you experience any difficulty in obtaining
AMTRON Kits please contact us direct.
PLEASE SEND FOR BROCHURE
gmRD12
111171EIL
TRADE & EDUCATION ENQUIRIES WELCOME
AMTRON U.K. 4 & 7 CASTLE STREET HASTINGS SUSSEX TELEPHONE HASTINGS 2875
1059
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TOP QUALITY LOW COST AMATEUR RADIO EQUIPMENT
IIn
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f
P.R.40
SOLID STATE
R.F. PRESELECTOR
TPhRe3 0 PwRh4i0c h Ri.tF .n oPwr esseulpeecrtcoer deiss . the solid state version of the world famous CR70A
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rineccreeiavseer pine rfgoarimn aunpc et oo vaenr tohvee rraalnl gaev eI r.a5 gteo 3o5f M30H zd,B ,p rwoivtihd inimg pa rocovensdi deimraabglee
ejection and noise ratio. COMMUNICATION RECEIVER
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ON THE DESIGN STAFF- TELECOMMUNICATIONS AND ELECTRONIC
G3SZM G31RE EQUIPMENT SUPPLIERS TO H.M. AND OVERSEAS
GOVERNMENTS
VALCON WORKS BURRELL BUILDINGS CHURCHILL INDUSTRIAL ESTATE LANCING SUSSEX
Tel. [phone] BNIS - BTZ
ELECTROKIT
SCORPIO CAPACITOR DISCHARGE IGNI-
TION SYSTEM (P.E. Nov. 1971)
Complete kit with full instruction data [9.50
"MUSIC MAKER" ORGAN KIT (P.W. Dec. 1972)
Kit includes only capacitors, semiconductors, switches,
preset and loudspeaker. [2.80 OR
COMPLETE kit including above plus resistors, PC
board and box [4.40
TRIFFID RADIO (P.E. Feb. 1973)
Kit of resistors, Capacitors, Transistors, Diodes,
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NEW STEPHENSPEAKERS LIGHT DIMMER kit contains all parts including
circuit and construction data. Fully suppressed, 480
A new range of loudspeaker kits and cabinets with a Watts [2.10
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in beautiful stain and scuff resistant vinyl in white or Complete kit including MK box, plate and socket
teak. [2.20
Just fit the speaker cloth (supplied) and screw in your P.C. Boards not supplied, unless otherwise stated.
speaker. We are also able to supply other kits for articles
HIGH QUALITY published in Practical Wireless and other Electronic
AT LOW COST magazines. Send for details of other kits available.
Send for our free book/et Please enclose a stamped addressed Envelope.
"Choosing a Speaker " ELECTROKIT
STEPHENSPEAKERS, 12 Lauderdale Road, London, W.9
WILMSLOW AUDIO, Dept. 'PW', Swan Telephone 01 - 286 0011 MON.-FRI. 9.30-5.30
Works, Bank Square, Wilmslow SK9 1HF THURS. 9.30-6.30
1060
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ZN4/4 £1.25 YDR's Tliermistors Potentiometers Capacitors
p REE
The I.C. Radio In e TO18 ca,. Supplied dise ceramic low voltage
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(((B79))) 442""1 4" xxa 4521"%4 "" xxx 1I1K1455"" " 333555ppp 88Sppp 20 Watts per channel integrated stereo aCmopmlifpielert ed eKviet l(oinpee.d Tbeya ekn Cgaìnwe)e n of Teem In£s2tr1u.m3e0n ts 4L5tdp. 46040 Duan0ty Priam on applicati7o3no. 7953- 00 930
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1061
www.americanradiohistory.com
UNISOUND FOR ThE NEW SOUND
AT It's the RT -VC system that screws together to save you pounds! Unisound
£26.12 cboemauptrifisuellys fitnwisoh esdu pine rsbim usplaetaekde rtes aka.n Tdh e anst earemop alifmieprl ifrieecro (r4d wdaettcsk pepr licnhtahn-naelll
into 8 ohms) is based on the famous Mullard Unilex system brought up-to-date
INC. by RTVC using intergrated circuits. Turntable is the proven Garrard 2025TC
VAT complete with stereo cartridge and tinted acrylic cover. Speakers are big EMI
Twin -cone units all ready for mounting in their elegant cabinets, which simply
nceoemd pslectree wpinlugs £a1n.d4 0g pluaecinkgin tgo geth£1e r.'4 0E paosys t.s tDepia-mbyo-nsdte pS tyinlusstr u£c1 tio2n5 se. xt£ra2.6 12
Stereo headphones with adaptor £4 extra. Send for leaflet.
AN RTVC EXCLUSIVE DESIGN
UNISOUND MODULES ONLY E6.95 50p. p. 8 p.
For the man who wants to design his ow, n
stereo-here's your chance to start, with
Unisound-pre-amp, power amplifier and
control panel. No soldering-just simply
screw together. 4 watts per channel Into
8 ohms. Inputs: 120mV (for ceramic
cartridge). The heart of Unisound is If you can solde
hpiogwhe re fcfihciipesn cvye Ir.yC . lomwo ndoislittohric- on printed circuit board
tion at all power you can build this push -buffo'
lsepveeclstr.u mov. er the audio car radio kit. It's simple-jus
follow the step-by-step instructions
THE TOURIST
PB CAR RADIO KIT
AN INCREDIBLE BUY
R C
ONLY FROM
The Tourist PB is suitable for 12 volt working on both negative and positive earth Circuit diagram and
vehicles. It covers the full medium and long wave bands. It is permeability tuned and comprehensive instructions
sturdily constructed. Output is a full 2.5 watts into an 8ohms speaker. But the Tourist 50p free with parts.
PB will operate into any loudspeaker from 8 to 15 ohms.
Apart from the output stage, which is an intergrated circuit, the only other electronic Fully retractable lockable car aerial £1 25
components that need soldering are some capacitors, resistors, etc. The kit includes post paid.
a pre -built RF tuner unit, and fully modulised IF stages which are pre -aligned before
despatch. As well as electronic components this kit also contains 2 diamond -spun PRICE ONLY £7.70 p. and p. 55p
aluminium knobs, elegant matching front panel, dial, washers, screws and wire. Speaker with baffle and fixing strips £150.
The Tourist PB can be mounted in any standard size dash panel and it has an illumina- 25 p. & p., post free if bought with the kit.
ted tuning scale. Chassis size is: 7" wide, 2" high and 4}-1" deep. Send for leaflet.
RELIANT Mk IV A GOOD QUALITY AMPLIFIER -12 Watts
5 Electrically Mixed inputs. 3 Individ£u1a0l5 M0 i(xiinncg. cVoAntTro)l.s 2. 0 SWeapattrsa £te1 3b5a0ss ( ianncd. VtreAbTle)
controls common to all 5 inputs. `Mixer employing F.E.T. (Field Effect Transistors'.
*Solid State Circuitry. *Attractive Styling INPUTS 1. Crystal Mic or Guitar 9mV. 2.
Mareo vsinugit acboliel Mfoirc .a owr idGeu irtaarn g8em oVf Imnepduitusm. 3,o 4u t&p u5t 1v2eWrs ion £10.50
equipment (Gram. Tuner, Monitor, Organ, etc.) 60pó
All 250mV sensitivity. Power output: 12/20 watts 2oW £13.50 P P
into 8 ohms. Size approx. 12} x 6 x 3# ins. version
SOUND50 5R0. MW.SA. T(TSi nAeM WPLavIFeI)E FRr.e qOuuetnpcuyt PRoewsepro: n4s5e w 3adttBs CPEO NTASPTRE ULCINTKO RS
points 30Hz and 18KHz. Total Distortion: less than 2% at rated output. Suitable 3 speed tape
Signal to noise ratio: better than 60dB. Bass Control deck, less leads. Caters
I Range: 13dB at 60Hz. Treble Control Range: 12dB at up to 7ins. spools. Ur used
- # 1o0f KiHnpz.u tIsn puctosn: ro4 tlilnepdu tsb ya t s5empaVr aitnet o v4o7rlru0Km3 . eOE accoh5n tp1roailr . bheunt cseto rneo s owilaerd- ILrSyO
2 inputs at 200mV into 470K. Size: v ranty. plus
19f x 10} x 8ins. Amplifier £31-85 plus 4J £1 p f p
£1 -50 p. and p. (inc. VAT)
1062
www.americanradiohistory.com
* Denotes VAT has been absorbed in the
price without increase on VISCOUNT
audio systems.
VPiRscIoCuEnSt : IlSl YRS 1T0E1 Ma mI plifier L24.20 + LI p & p
2G aDruraor dT ySpPe2 511 sMpke.aIIkI ewrsit h L15.40 + L2.20 p & p
MAG. cartridge plinth & cover L25.00 + [1.75 p & p
total C64.60
Available complete for only L52 + L3.50 p & p
PRICES: SYSTEM 2
2VG iaDcrouruaon rdTt yRSp Pe12 051I l lM askpm.e paIllkli feiwersri th LL2345..2200 ++ CCI3 .3p 0& p p& p
MAG. cartridge plinth & cover C25.00 + LI .75 p & p
VISCOUNT III total L84.40
Available complete for L69 + E4 p & p
ONLY52*
UDIO STILL
14 + 14w. r.m.s. 40Hz to 40kHz ± 3dB. Total distortion at 10w. at 1kHz - 0.1%.
This is real value for moneyl We have designed 2 systems and the heart of
them both is the Viscount III amplifier. A unit of great eye appeal with teak
finished cabinet. FET's (Field effect, transistors) are incorporated on the input
stages, just like top priced units. FET's give you more A the signal you want
and almost none of the hiss you don't. Both units have output sockets for
headphones and tape recorder.
For both systems we have chosen the famous Garra -d SP25 Mk. Ill deck,
with fitted magnetic cartridge, which comes complete with simulated teak
plinth and tinted acrylic cover.
The exclusive Duo loudspeaker systems are incomparable for quality within
their price range. Large speakers in extremely substantial cabinets. There's a
choice of the Duo II's for the smaller room or the big Duo
Ill's for real bass response.
SPEAKERS: Duo Type II Size approx. 17in. x 101in. x 61in. Drive unit 13in. x Bin. with parasitic
tweeter. Max. power 10 watts ohms. Simulated Teak cabinet. £1540 a pair (inc. VAT), £3.30 p. and p.
Duo Type Ill Size approx. 231in. x 114in. x 91in. Drive unit 134in. 81in, with H.F. speaker. Max. power
20 watts ohms. Freq. range 20Hz to 20KHz. Teak veneer cabinet.
S10PWE C1kIFHIzC CAM T0IO1%N. RP1.U01.1: 1(4fo wr actetsr apmeric c hcaanrtnriedlg iensto) 31 5to0 m4V o hinmtos (3s uMiteagb.l eP 3.U-1.25 o(fhomr sm.) aTgonteatli cd icsatortrrtiidogne sin)
4mV @ 1kHz into 47K equalised within idB R.I.A.A. Radio 156mV into 220K. (Sensitivities given at full
power). Tape out facilities: headphone -so cket, power -o ut 250mW per channel. Signa-l-t o-noise ratio:
(all controls at max.)-P.U.I. and radio 65dB, P.U.2 58dB. Cross talk better than 35dB on all
inputs. Size approx. 131in. x 9in. x 31in. Send S.A.E. for fully illustrated brochure. 12 month's
written guarantee.
ONLY FROM US
TIMES OF OPENING: Acton -Mon. -Sat. 9.30-5.
Closed all day Wed.
Edgware Rd. -Mon. -Sat. 9.30-5. Closed all day Thurs
1063
www.americanradiohistory.com
All prices in pounds and new pence
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211371 22 202904 20' 00117 26 881000 20' 002201 50:0081 20 7402 20 7413 30 7441 75 7406 45 74122 £1 35 74192 1200
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RS VALVE MAIL ORDER CO. 16a WELLFIELD ROAD, LONDON SWIG 2BS
TSpecial Express Mail Order Service TELEX 946708 Send large S.A.E. for hat. Phone [phone] (4 lines)
Express postage I p per translator, over 10 post free. Integrated Circuits & Valves 5p, plus I p for each additional item, over £5.00 post free
AMAZING MINIDRILL
P. C. BOARDS Indispensable for preci-
sion drilling, grinding,
t .( -7, 44 ee22::.. . . 611 FPORRE CISION pinogl,i shsinhga,p ientgc.h inPgr,e cgiosiuogn-
t R'£-'.á . ...., ' t(,a._p, .P,yv`' MODEpLoSwhoecrk pfororo ft.h e eCnotmhupsleiateslty,
power from 4}
Reverberac,on Unit PCB. WvOoRlKt poretaxbltee rnal battery. So
FOR P.W. PROJECTS mMuINcIh - DRmIoLrLe. scSouppee r wKithit
(extra power, interchange-
REVSPsEEpCTaRB c iBon(fgE2 iCRRnc i'osArAoc,m T lulCp IiI Ota'Ps( tfC,NaiI bnnBS lde)'IsU ,C LFw'NSsai,byip ItroTehSeuc lg iitpdl(a auNelsDlbyrso i l,ai vdPsghe/oDrDestasridmeg,il nlcesTfe rdrfd1ora,e 9 nnt7eoRst1 fo)wpoa larllisemntohree - l Thre Loian[Ilc d5nh 2.e 90SdP5 l Ci dBe r Pots with fON2LY + S TOOLS aDw23beitpl he.L cuM1hx7oue nc tekPoy)or o£lbsf4ae .c9sk£5s i 7rope.n6.fp5ua. nl1 Pd3KP.p i.t.
7 WAPCTBT (AMMonPoL-I2F4IEinR x( NSoinv) 16907p2 ) MERLIN SUPPLY CO.
R's, C's, Semiconductors: Stereo Set [7.70, Mono Set [3.90 P.&P.IOp
PRE -PACMB P(SLItFeIrEeoR- 3(}Nino vx 179}7i2n)) - Sfoperc iaulslye dwesitihgn e8d W toa attls oA mhopldli faiell rP ots, Dept. PW473 Nailsea, Bristol BS19 2LP
either rotary or slider, plus Selector Switch [I-30
R's, C's, Rotary Pots, Selector Switch, Semiconductors,
Stereo Set LS20. Mono Set [2.50
SlideSr teProetos -&E xKtnroab sE 1in.5s2te, ad Moof nRoo- tEarxyt rPao t[s1: 26 BROADWAY ELECTRONICS
LOUDHAILER & SIREN (Dec I972)- PRE -AMP& SIREN '92 MITCHAM ROAD, TOOTING BROADWAY,
GEPSCeNtB E oR(f2 A6RiT'ns, O xC R2's },i nP) o7t3 (pw. ith switch), Semiconductors [I.45 CARTRIDGES -SLteOreNoD OSNo noSto.Wne. I7 9T0A1 -672H /C39 84 Diamond [2.40,
VIBRP& CATBSo nO(e4 iNnC ICoxn tGr(oliUlns)I, T WfAoarR h M-PWiRca EhP -,rA eM M-AaPms tpe(,Sr e2V -poGltu um1it9ea7.r0 )SP pree c-aiamllpy , dTesreigmneudla tnot RGB.oPSn9.Re3.t/ tIe T CSS8aIspO p5h[ 1iMr.e7e 3d[.i1 u.m9P 0. O, &uG tpPP.u9 4t7 /pIE 1oS.n4a 0pe,p ahScih1re.0 6 [2H,i gJha pOanuetspeu te q[u1i.v4a0l,e nAt cotos
aS[7les.o7t 3oh,f o SPldio cw'asl,el rpR so'sut,s p, pCely'si t,h [2eR.r8o t0aR.r oyt aPryo tso,r SLDlidRe, r.L a[2m4p1,5 Coupling T/former TCCABRHT RlaIpD. GeqEuSiv -aMleontn Eol '2G5.P 91P . &S tePr. e7op . Compatible El .25, B.S.R
Slider Pots & knobs instead of Rotary Pots -Extra [3.36 HI-FI STEREO HEADPHONES Padded ear
DIGODITtehVRtea.OirAl s.DPN TOeoI.nsC Si gwTr neAiDsqlGl uIEGAbees:v I taTc.U ihlAa.aKbLr.gl ee.CId O LpSo Ona.A nC.yaE lKl.o U rf(doF.eKre r.Lb. i.osO tr Vd1(Ee9F7rR/ss3Se )f EerpoA)mS a naAdt pceroinls qt.u1 sirti.e s. ci6bPmuf.et sp.t he&wi doceanoPens.rn dc e2 r7seae48pna .drl o odohsumutScatse nT,rd E arfoRrraedonE qdmOu s e teenanrcroeHsyio s Ee ar.aA spnslDuguPgerPee. rH2fefO0Ouc-lntl2N l0yE,cr 0eo 0s[u2p0pJ.o 0lUnin7HsgN.oe CTION BOX
PHONOSONICS Stsowim itgpcilvhee uatnott iet ncguoivanetne edc htesha eddapidrhepohcnot entsoe aoomuntlypp,lu ifti eshrp aeasa nkd3e srpspo esaoiktnieolyrns,
DEPT. PW4, 25 KENTISH ROAD, BELVEDERE, KENT, DAI7 513W speakers and headphones. Only [1 -SO. P. & P. 13p.
MAIL ORDER ONLY V} YyaNrdA I4R0 p. WPi. dt&h s P.f roIOmp. SOS etnod 554pin .s, ta7m5p9s Yfdo.r osfafm rpolells. . P. & P. IOp,
1064
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