3:\ ffi a !:: r'fi'ilil. ,tl\ $GI. ..an. i.rlj: llnljf. ItT-l;-l t:lf.ln nrlln. ttx-rc,,f UDUIN n?dy5 'rn nnvl;l ' i-80

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3:\ et ffi a q_.{' Al \' K!:: r'fi'ilil,tl\ 0 $G $ llnljf. tt-l;-l t:lf.ln nrlln ttx-rc,,f..an i.rlj: 1980 UDUN n?dy5 'rn nnvl;l ' i-80 . xtur: rrtil,ff,ln nrllil llnuf _,,r^n,,,,hagal THE MAGAZNE OF
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3:\ et ffi a q_.{' Al \' K!:: r'fi'ilil,tl\ 0 $G $ llnljf. tt-l;-l t:lf.ln nrlln ttx-rc,,f..an i.rlj: 1980 UDUN n?dy5 'rn nnvl;l ' i-80 . xtur: rrtil,ff,ln nrllil llnuf _,,r^n,,,,hagal THE MAGAZNE OF THE SRAEL AMATEU RADO CUB '\F, r y'llil! ilylr.)-]p'f trl. ;f rfftn rtnaer n_ilrn AMATEUR nriib-'c'iire TEL-AVlV. P. O. 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DtuSl P., n lty.l lvnunl u, Drrylyi[t ot ut lx yt 4x6Bu rjl / Ertgn.lrtr nrern nrnrdl lly ngrdl nlly nlntt Dy orur.lrtn rnx ntld 1nilt rd.nltulni.l ot/rpd orfutt rf,tln ls,d,t:h nr:dl n.llll R.9 ronn!c, n:u:xn - nnl nd?rs rfyn nr:n nrill 'njlt, ntt! ttrp nru:xn )u lrrn1 ntir:r nrx!n) l lln Eptn il-rlriln Tyl ylrdt.l''.'lulnd. lnrlt,orup-.nln tl rnln.t qn Tltjyrg TflD 'lddn;tu,'ltndi ylnil ltlnil nnpi.t rnx).ptt ildtlt ntlu,tn nyjltjn,iltn ildyyf, EtuuD org y.ln ntlu ittl'n.t?y;d il.l-nlilg ;rryrn.ntyfn ntrnn )u tlnyuo colpyrl lw rlns: 'rr )y prpln nrng:,r,,n) tilyl otf13r;1 Dt:fln,iltylit nx rtng llrdlt nlt.l tnxd.'ino:) nt:g! urup:nn,nryrl ulnrn ltrng: DPDn lddnnu lnyt Nl E' srlt rdndf 'ltyn o?jt rjnl flynt lrl nrf, njl)r., lv lwra o'nn )rrn )y.o'n r:s yd,n ele lp altu yu'ul npirr: 4z4sM ltrylnn n:nn g, il.lutl;l ol nn lyy't4x6cofiry'lza lrll'jf npjp;l,1rrnn rnxl nilydj 4Z4SM l1-yttjil nlnn.drp.ltti.t DrJtir?n;l )119r 11 )y orn: il'lt.ty.nty;.t.)lrt nrtp D,,tn1t.),,r ril rtln lttx op., nn nilull l{?;.n tk,yltp lln urrp. ydc,,t ord? ;.turdn ytl ltrytnn nltdll lltyltj njnn.o,,mill r,,nn otnn: nrlrygt nnlytnn nntlryo nxt 4x4Ez Nril orfg,tttd nlytgn ltlsr.llit tlil, rd lyltt ro avn lv onrrr! rppr! ur, lw rlno: )u rnrryr Rp, -) ntrrpn ttyln -f ngrnd )ty5 n'lln.t 1: lnnun rrr )y gr)1y gr)-r,r n1 E'sirtDn r)xn up:n rfntj.nornh rrrcrnn )n nx yyr rs,sxry illn iln'.lp nlx rtu! qrurnf )rp) or ndl' llrdt Drlutrrl tlrl lrpr. nrrynn r;ruvn orlutrt r::tn).x,'nn nz -l rttc.,nn )rn nx lnngud oy nlyv zaaaxltxnp'tgx El1.rn ern tfn ly nrlryon Dltfln.illitpt D?tpNn's o'ttirnr yrxl.d lnt was,'n nx ntc,yl nttdrrn tru:y n:nrrl nllndnd nrnpllttn itlnn ity?5ltj ntr l: uybr fpil lld ry ;ltlut 'l) i.ly1x rrprl) nrxrn,nr:rzn.nutld;l 50 frn Et.lpttJ ottfln lyrl, DrNltp Ettf,ln lnpl.lnl?g ill{.ll ttln lllnil ll.lnfll.4x6 co nxrlp;t nlx nr fpyr h?p rnd ne?y co. CALLBOOK -N rrf,tv nrx. rx.dtuil.lodtt,on:tnf: rrlru f ns, Drlf n,11f llnn nr nrlu)r nu)nt o,u,zrn; ;d; callbook -n u luru plry 1e91f.1r1*-ln oo9 ;tngvddut,u1, Og, _ rror, oo ;*.rl.*li + njulnt ntunlt 4o-il ndg,t ilnnl5 lnllpil njuln,flpn UJDtND n:f'dn ntujnit.'tnt nttntlglg.'l'ndf f,'l?9 )y utlgtl;.t sldlj.rnn uldtx ntnltl 'ttttn 'lur ntyt nlutn nt?il.lnpt nttlpnn njujnn yfl'ld n'llyl lflldil nulnl ttnn nrlu,y iltujnil.eru ltrltl r/4 ntln ytl'tnn lv yly rtl tunf lrlyd ln ntyt njuln ntltt lnr:.olu )r lrtt: ll?il utdtlil llyty BrV fr lrrx: ujtitnn tgnt ntnll nllln olnnt) ttr?y n'ltyt tn nryfy ntru pttu,n n..nyl -'rt Dn?r z DB -r lur'n,'tr' ijlolll lrill 'nltrirn nnr ld'fr u:nlx?u inysutn.alz!c,.tnxp ht ;tjujnd nroll 1n':u 1r nntfx nr:u:xr lrtiln) ltlif lj';'fgr t g oe.rw 1un Eru:nlx r:u nlyl tnt)r,o'urnlx ivtlv n\yt 'rx' n:u:x) ltr7dn ntrn) nnr 1tl;t ot.trpn nn) -ll{llp n.ldlx n.llyf lrr fy srr:nn ilttnt luir uru:dtxil?l pn.ldnul,fs,n)'d zo )r:.oru:nlx ngfrls, nly: nnr)n n:urx iltn BooM -n'l1ll tern) Ert.l t E'yty?t l:irf lntr inlsj DN.nnrh n:urxl u.l-rjir,ti e r nntyl,n 4 _: ntlt lntnt nlnplndn rxnp n:u:t) nbrlx nru:t nltlt?l njrntd.'xnp;ln.lnl' in-l[ ;.]rtf nt l ttirj ltttylr Dntl,flu 'llnnt i.lnr-p Dnr: iljulnil nj??uyll :nnn ndrhi ntu:ln nfp Dl illnjxn.ry! nn'rp lu ylld nlyyhnl nt:ro 1nr:t 'lnl' illup nrt! nrrr E?r'rn on.nrptlul nljujl{ ydunn lldnd lupt utsr5 rp9ln ;ttnr illt'lp;l :lurp?7!nnit.llurltt rnlliri.l -ujni'r nn rlpn rf,tnn llgtllf nldjnil nn J EN ltlnfl ilr'nriln x'ir irrurxn )u mmyrnr #tillt' 1hli '10;'rn ntnn,;'lluln;'t n?lf ty rrgp;1) 9z.il11p;.1 Drtluy EtuJntNil )c, ill dnn ntutn.nru:x!.,r:y,,! 6'prn nlnl sr:l11 pftr1lgt, pltdfn lh lrrr tu,'l.tln) on'ly onrynt o:rrx )r: nnl,e'y.;?nll tlyl n9,tnlil )'n Dr.('lult zo-l nrutx.ilty 1uD 7*l TNllp nllujn roon :)sl lntj.ittlu nlltnn ;ttitrul OrulD?xn t yltp pnrnr Psnon),Or:rc, Orltf )rf r)nructx pnrn ):p! or:f n D'.-?D ntyyttnt ln n:rn l:l 'lttrn nt'.tugnnil nlt;t ntu?p o, n16tr7.h Nr;'t.tNllp njuln )u nt)y.nuujn rqpn) qntc,t! isn 50s) )u f:rirn rp) nnxnl 'ly.ll l0oo l',t.tf n:ry 7P/ r/4 n'lldrtn lp nlyytlnl N'n ilylqlil nu tljtu) iljulx;t nrjyil,etrnly ortl Dnr nyntd,tse :n'l Dlnnt flu Et'lDly Dr)t Dnr Erttptll ;.tfiu.ltn.d9n 7U.lJlfn t'u nftyr n:u:x n1tl 'Nllirn ijdtn :DlyD) nttbt Dri't t'lpry;. illl.ldn.ndtlx n:u:x tll) ;.?n plnn fv nrlpn rx,ilnirlnil nlu:xa ur r:ldn nhn iltlu n.:u:x n!:p n.lursnlt nju:xn!c, r::dil.6r71y66rytxr: nlll.l Dtrl E t!5t r1)1 6r11pr1)!): lrrt Dtrlgy Orf:ln lttyrnga) trgy rn'7t ntl1 ttty,ernnil.ytpi.t tplttnl nrng' rpttptn pt1 1.tpDi.l tg,nl Dtyl xf ryn) otrrlt.tt::n nrtxl ytvn) nh 1J'-?l l?nl,i'l.1p.iljndr nnllr,1ir nop orr n:rnl )irr utus Du,rn l);lt nltot 2't DJJ ;15i, ntg)tothu ()unt nj!ty) tup rl): rtyp hpndu 'ry E'1yJDt D'tp o'n Dll E'foty lfld.;'ljnd iltnu Dlll or:ltur rf li't llu nn ltt nlt?yst lnnun x.ltn 'Drn ndtu,.ltl Et{ )tp o'rrnh pn 'J ljrtnilt l)tn lx.19ryt,,g;1.pr.etltrlryil ntnjil rn,rtrd ptdy nnn - nttylt nr)'yo frn unnc,n (2 nn'rpf,l,ntnl ntc,yt'ry't E;t yyr) 151n...ntnftJ;.1 Enrtgy OlnNil,nlun )x - nryr n'lnnl nnr t)t on (3...1rxoir ly Ultn rn.ntrrjh tv.,y? N.nllltyl ytln tx 'lylil nlttp.,rt nllt nnn Dil (4...o'lnNil)s, nul'ytn nn tirlt tltn rrtd E?nltt Dil - 'ltnil rdtd nn ols'! rnnn!n (s ottlyy Dt'lf' ;lurly Nt il-]tnily llltnn TN ltufy nr: x) nr - E'uln;! rrn nrnrn) iruot nornlli t,.nhl nl:'n ;.t-nlnnu, lllnn) f :tn rx - n'filnild?:pn lrrnu rnttn r.lt-rt Dn'nn tn (7 orllnt B'nllltr Nt rl l.l. tnn N,E'tlyn Nt Dn.nuyl nd?yrnvni /l'td - 1rn])11p1 'l'nlll tsf nx :r:n )N (g E'f'lyh xlu tx rrn'l''n E'Ntlir tfu 1:r)nn rx.1)u )xrr:uron nt ndnn tx N - nn!r: nlrr il-r.trnil tc,nll (9 'ryr:t n)nnnt nril nup ;lhl t-tt.lnnt ndn-iln.ot)n ry ytritt tn 6ry1)p 1611 y1'11y...1'9nf,1 llg D t jil nn nnlirg lnn) (10...lnuD nruy ntntfu 1:torn nn vrrlntt ttrln tn rp44c /.zn:rrns orlrnr - nryrn - -TVt (ynun?n1n) llutt ty un nrl.lt.t'l f,fln nl?ilt nup 4X6AW UTnl'l'yv ttln 1or) n:u:tn nt{ tlldt 1ry ur)na rnn fly -il llnn.nttryg lns lun tnn nxrtpn otrd tnxt n11vy ut nlsnu;t lil?nlnllp lydu,l lty lv v,,npn '9Fy nlp'51 lynul nt'it 1tt':n tlrxt nt'jgt nllnn ttlprg1;', ly E':!'n nn 1ny;11 Uttnil lty.nl?t 'ld tc, r1;'r rnll rrgt n'rny Nt nl'ra ultt.nfr:u 'lt!9, ltndd.nlynln ltgri'l N1il Nln pruc,1utnry]5nil fy nrnrlun nl'ljtn nn l''r!d pr99'19'117 EDNr n'lyd nllf ilrrtt DJtt Nlit.l1y t E'llru -'lrlp rd fu rnlrru iltttyil p'r.l'lyf E?uos nrgyt.njv 76) lttl ) p rrs-r t)pun lt d 154-l Nlil prpg.lt'l'9ln nn i'tt'yilt lryf r nrnv -oilil nlrylur N?il it'rtlyil.x) lf::?yytyvn ynur) tnild llrlntr ptnt r:on n'prluil r1l?cj) nry.y'lnf o?tttnn tnnd it'lttd nlnlln rt]'ps ndnn ndl yt-tl urr N' nr nrypf, Nt trrgn.t'llnil ty nlpy! nttll ll'nt.nrptlun nlyt! nlrrn - orjgln i'tdft il'yfl yrlf tsun g'rnil lyltl Outn r:)urr yrtt nnylj nty.lgit tjtjyt FCC -il?u orjjltnnt n)urg, trdn l' ol D5'lrrrnyt.E?'lnN.lnlN yllnt rrj5n lyrt TtDrl nlylgn ty 'urtp ildt ndjt ordld JN 'tnl'il Dy llnru't,ll ltt).nllnn 'llrdt'n].ril )flt 6;T9 )y ;71p grip'1 ny'tts, Ntlil ryydn nrurfu,n't'l ilttuitt,irjtl tnyron!: rfdnrlntil (lr nlrrn nnr) ny'l 1ut?5 (1 u?jll[ 1?f,yn JDD (2 nult 'ln nly'l9tl yjdn lf rltxy.r - otld nplnit (3.o?ttlnil rntt Dlgtuil fy nliln., { 'l l ll - :L:.',* !* d*: - =:---- * Ee. B^= 2r Rr Rz Cr C2 'rnflil,ilr lldn urddn lv tl' oml otltg rjg D19t lln nllynf lzuvllill BUTTERwoRTH N1PJ LNEAR PHASE NlPln?lUril],ntlltn ilnlug.d?9pnd7 i'r'rtild ntun: Duyttil nlts,ltltg BUTTERWORTH rdlr lrdn lllrnt :llnfil nlnldljil R,+R. c,_jm W\'r:D;l.,r,r.rnil 4Z4LM rtllit.rnp / Ertrtrtt{ brrtd}! 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