o u TAPE ,CÁSSETTES--FACTS & FANCIES POPULA JUNE 1969: BUILD OUTSIDE LIGHT -GREETER HOW TO TESTA _UNIJUNCTION CARL KOHLER GOES.. LOOT HAPPY "EYEBALLer"MONITORS CB RIG BUILD i L7 'é n WIRE !. SS RE ONTROL . Ail) 190,76 d77- 000M0311 13 N3aad ez 113NNadI 1 90 3 1-0/adV 560b9.700 NaO ZCbZ4f. ;L make learning Electronics at home fast and fascinating give you priceless confidence. firsts Some NRI in training equipment n. f11 Sly to give you Color Television trainin-g iai ies to give you transmission lines and equipment engineered specifically for education antenna systems that include experiments not built to fit NRI instructional material, not a do-it- otherwise attempted outside of college physics yourself hobby kit. The end product is a superb laboratories. The- e xperience gained- w ith this kind Color TV receiver that will give you and your family of Communications training equipment is matched years of pleasure. You 'open up and explore" the only by months sometimes years of on-the-job functions of each color circuit as you build. experience. NRl's "discovery" method is the result of over half a century of leadership simplifying and dramatizing training at home The FIRSTS described below are typical of NRI's half century of leadership in Electronics home training. When you enroll as an NRI student, you can be sure of gaining the in -demand technical knowledge and the priceless confidence of "hands-on" experience sought by employers in Communications, Television -Radio Servicing and Industrial and Military Electronics. Everything about ... NRI training is designed for your education from the much -copied, educator -acclaimed Achievement Kit sent the day you enroll, to "bite -size" well -illustrated, easy to read texts programmed with designed -for -learning training equipment. YOU GET YOUR FCC LICENSE OR YOUR MONEY BACK There is no end of opportunity for the trained man in Electronics. You can earn $6 or more an hour in spare time, have a business of your own or qualify quickly for career positions in business, industry, government. And if you enroll for any of five NRI courses in Communications, NRI prepares you for your FCC License exams. You must pass or NRI refunds your tuition in full. No school offers a more liberal money -back agreement. The full story about NRI leadership in Electronics training is in the new NRI Catalog. Mail postage -free card today. No salesman is going to call. NATIONAL RADIO INSTITUTE, Washington, D.C. 20016 APPROVED UNDER NEW GI BILL If you have served since January 31, 1955, or are in service, check GI line on postage -free card. designed from chassis up for your education 0 'UM n e r f s ..-&AI r_ - . first firstto give you true-to-life experiences as a to give you completely specialized communications technician. Every fascinating step training kits engineered for business, industrial and you take in NRI Communications training, including military Electronics. Shown above is your own train- circuit analysis of your own 25 -watt, phone/cw ing center in solid state mctór control and analog transmitter, is engineered to help you prove theory computer servo -mechanisms. Telemetering circuits, and later apply it on the sob. Studio equipment solid-state multi -vibrators, and problem -solving operation and troubleshooting become a matter of digital computer circuits are also included in your easily remembered logic. course. POPULAR VOLUME 30 NUMBER 6 JUNE, 1969 WORLD'S LARGEST-SELLING ELECTRONICS ELECTRONICS MAGAZINE SPECIAL CONSTRUCTION PROJECT BUILD WWRC 27 John S. Simonton, Jr. Signal Control on Commercial Wiring FEATURE ARTICLES BUILD THE UJT TESTER 33 J. W. Cuccia Check Unijunction Transistors ELECTRONICS MATHEMATICS QUIZ 40 Robert P. Bolin BUILD THE EYEBALLER 41 Jim White, WSLET Monitor 3 signals at once LIVE WIRE WITH A LOOT LOCATOR 45 Carl Kohler Diamonds on the beach IONS ON VACATION 50 Nick Roberts YOUR OWN PRIVATE OWL 51 James A. Archer Turn on your outside lights NO MORE FUSES 59 Neil Johnson Use a variable circuit breaker FINDING PARALLEL RESISTANCES 61 Ronald L. Ives PRINTED CIRCUITS, PATH OF LEAST RESISTANCE 63 Roy Hartkopf Tips on making your own THE STEREO SCENE 65 Charles Jackson Cassettes: not either/or, but and! CALCULATING INPUT AND OUTPUT IMPEDANCES 69 SECOND-GUESSING THE "PITCH REFERENCE" 70 Emerson M. Hoyt THE PRODUCT GALLERY 76 Stereo FM Compact (Heathkit Model AD27) SOLID STATE 78 Lou Garner SHORT-WAVE LISTENING 81 Hank Bennett, W2PNA U.S. Pirate Station Located ENGLISH -LANGUAGE BROADCASTS TO NORTH AMERICA 84 Roger Legge AMATEUR RADIO 85 Herb S. Brier, W9EGQ Amateur radio program begins 10th TV season DEPARTMENTS LETTERS FROM OUR READERS 8 OUT OF TUNE 11 Build "OpTach" (March 1969) "Sound With -Sound Mixer" (March 1969) "Popular Electronics Universal Frequency Counter, Part 2" (April 1969) NEW LITERATURE 14 READER SERVICE PAGES 15, 95 ELECTRONICS LIBRARY 16 NEW PRODUCTS 22 87 OPERATION ASSIST CB JAMBOREE CALENDAR 94 TIPS AND TECHNIQUES 97 INDEX TO VOLUME 30 (JAN. -JUNE, 1969) 98 PinO PthUeL ARRe aEdLeErsC' TGRuOiNdeIC S IS indexed This month's Ccoonverard p hSotutod iboys to Periodical Literature copyright gl 1969 by ZIFF-DAVIS PUBLISHING COMPANY. All rights reserved. PIpO8lloO0itnst3aPto0awUgi2sae.L , A6pERta0'dai 6duit0 aoE1udrL.tie aE OlC Ca,h,oTneifcd fRia cYOegefsooNa .rr I fCoIlsprlSiu anb,myo smiacJsenru inunpatset nic odorni fp1 at9 trp 0aoc9atseo,dt nadgtfVioretiairb o launUintnaic o.leS n r.ms,a3 ,s a0Uh.ir..l eiSna...g dNv eauPrhtmí o ssbilcneeereeqri pysu.St iiiirnimi.,Ie ,lue sl P,is, aaaebenrrvdift_icis c.ehe:C de ad Ona anansemdd a os,P nPeateo$horr5lkiuyn. d1 g 1A a0crtle:. a 3.s5,3a s7 0lN9l7 :em owat h.PiNle oVorrar btttlhyicac on, tudMhVn eit.c rYPihePl.ias goc,sa e1tn ,$0 60O.11:Bfaf16oivc0.uee . ln dueSeDre,,i c poCCanhrdok ilcioncar lragaodostos,. 4 POPULAR ELECTRONICS What could a career in electronics to you? mean 14.4 r I s rL.Tr . Escape from a Freedom f om Greatly increased dead-end future automation fears earnings A key spot A better standard A chance to be in a key industry of living your own boss r A great field, electronics. With an even greater future. And-if you have the skills D414E1 VWERSYT B EIfL1MSOTNTIT AUVTENEU EO. FCH ITCAEGCO.H ILfLOINOLISO G606Y41 PE -6A -a good spot for you. At good money. In ONE OF THE BELLEHOWELLSCHOOLS the growing electronics industry. Or in business for yourself. Please send me your two free booklets and information about preparing for careers in Electronics. I am in- DeVry Tech grads have the skills. You terested in the following opportunity fields (check one or more): can too. Send in the coupon and let us o Space & Radar Broadcasting show you what a career in electronics TMEelielsecsvtirlieso inoincs AEuletocmtroantiiocns IEnldeucstrtorinailc s could mean to you. and Radio Communications ¡J Electronic Microwaves Computers Control Name Age DE VRY If1STITUTE OF TECHROLOGY Address Apt 4141 WEST BELMONT AVENUE. CHICAGO. ILLINOIS 60641 City ONE OF THE State Zip Code BELLE HOWELL SCHOOLS Veterans: Check here. If you were discharged after Jan. 31, 1955, the "G.I. Bill" may cover the entire cost of your tuition. June, 1969 5 BREAKTHROUGH POPULAR ELECTRONICS PHILLIF T. HEFFERNAN Yá;=1 Publisher OLIVER P. FERRELL Editor LESLIE SOLOMON IN ELECTRONICS CALCUTATING. Tech nirot Editor JOHN R. RIGGS Ssthlotisiwl l npepewlno cdEild l-ieancngtd r o-tpnhaircposeu rg Shwli daeym? a RSthum leaa.s nhd theel ecptaropenricwso rkp rboabrlerimers wtihthe EDWARMDaAa rotu iIDn. gir eEBctdoUirt oXr BAUM thrEouvegnh ifr eysooun'avnet nferevqeur eunsceyd caa lscliudlea tirounles baenfdo rien,d uyocuti veca no rw chaiz- ALEXANDAsEsoRcia teW E.d itoBr URAWA pacitive reactance problems. You can find reciprocals for ANDRE DUZANT resistance formulas instantly. You can even locate tricky Technical Illustrator decimal points in a jiffy. PA7TI MORGAN You can also work regular math problems in a flash: multi- Assistant Editor plication...division...square roots...logarithms...trigonometry. AURORA NARDOZZI Anyone can use this sturdy 12 -inch, all -metal slide rule. Editorial .Assistant Wccaoesu erss ehdo.e wliS bleiydoreau t erhluyol ew,p riwccoeitudhr seolo,u wr anacdso mhopaulnre dtews oamy4 e-lo efs lesmoaanthk einirng s ctrfaurricerytniiondngs HH.. BS.E NBNREIETRT,, WW29PENGAQ with men in Electronics FREE booklet gives full details. Mail L. E. GARNER, JR. coupon below today. M. P. SPINELLO, KHC2O6O Contributing Editor.. MAIL THIS. COUPON FOR FREE BCCEILET. RICHARD J HALPERN Advertising Manager CIEClevelandInstitute of Electronics ARDYS C. MORAN 1776 East 17th Street. Creveland.Ohio 44114 Advertising Serrice Manager Please send me your FREE booklet describing the Elec- LAWRENCE SPORN tronics Slide Rule and 4 -lesson instruction course. Also Associate Publisher FDRatEaE G iuf idI ea. ct at once-a handy pocket -sized Electronics ZIFF-DAVIS PUBLISHING COMPANY Editorial and Executive Offices Nnmc One Park Avenue, New York, New York 10016 Address le,usr PRINT) 212 679-7200 City j 307 North MichigaMni dAwveesnteuren, OCfhfiiccea go, Illinois 60601 L State Zip PE -157 Midwestern Advertis3i1n2g 7M2a6n.0a8g9e2r, JAMES WEAKLEY CIRCLE NO. 7 ON READER SERVICE PAGE Western Office 9025 Wilshire Boulevard, Beverly Hills, California 90211 5Argos' new speaker technology 2W1e3s teCrnR esAtvdievwer ti4si-n0g2 6M5;a nBaRgaedr,s hBaUwD 2D-1E1A61N °creates a genuine Japan: James Yagi Ishikawa Mansion, #4, Sakuragooka price breakthrough in Shibuya-ku, Tokyo, 462-2911.3 two-way system design. Circulation Office Portland Place, Boulder, Colorado 80302 é , William Ziff, President W. B,odford Briggs, Executive Vice President Hershel B. Sarbin, Senior Vice President Philip Sine, Financial Vice President Walter S. Mills, Jr , Vice President, Circulation Stanley R. Greenfield, Vice President, Marketing Phillip T. Heffernan, Vice President, Electronics Division Frank Pomerantz, Vice President, Creative Services Arthur W. Butzaw, Vice President, Production Edward D. Muhlfeld, Vice President, Aviation Division Irwin Robinson, Vice President, Travel Division Furman Hebb, Administrative Vice President George Morrissey, Vice President Sydney H. Rogers, Vice President o w TZRlarakloa,eiuvlr.nttDeienrla o.g nv.W iiSseekBs e UiinkNalW)gly sNo .or eA slsdr e.pa u3 b NlFiCslehyoweimsns,gm .e SrAkcMiiiaiornlldi gne reATn v riaaMdtIie:aor nniadN.e ge.e wCmsaPe.r o npStau tnledara ren oDd Ir'iRhvueeMetvrroa.i.e erkwrCep, turi nhagiync..d.. Tfoidfhfeee lriitnnyeg ws o fuiAnnregd -o furser npTirXtou -d2reu0 0c tciioosn na s sttryoustcatteliloym nns, e-abwi g sd -usimpyesetrnebsm iion nsp teriurnf mohreimgnh-t 1dlna 'roener,dsmns -ese dPnf lrUatl oocrP escIP.l n hOeaBP loo uUgIdufeL lddA eapRrol, l s aEsdiCIsbd.FoulreelbCo ssrTsaca.Rdr nioO p tNaiodInCd rSe.se so Ctr rielracsbuepe olola nltdidof erno.ni- naÍrDrtl il orerwasps shaoarrteutm cldee lnentat .bs etI Psl!sosauridetx--. aTloXnwc -2e -r0 e0sa onmnda antccchoeem swp oaaoc ftsenpre eswcsiit ahl lfyao -rnd eemws aighxniigmehdu - cmoh migvhpe rrescsaostmiiloitpnyl .ia hnoTcrhnee ,- aEggrfeaI TphOasn idt1 oArw o1m il.l a rCrnsbOuneso NcnrhTsipaRlhtnsildnl.u lel 'lTdy I OwfoNitrhS r emretuuarssnto nhoaerb leas caccfoeamlryep ta onfhie odaw retb vye wrr.eo trukPr.u nb plihPsohotesotr-. lroeasdpeodn sed rfrivoemr 30c oHmzp toon tehnet intaou dpibrloedsu acte 18d,0is0t0o rHtioz.n -tree .OAV/S -ity AtEDe MPA ^r á SCapbeinceifti:c aSteiloecnts w alnut, Belgian linen Q`" lF-Vj JJI -o r O Mofe mCbirecru laAtuiodnits Bureau grille. Size: 18z/e' x 111 ' x 7%á'. Products Company Price:C AIRudCioLpEh ileN One.t 3$ 4O5.N00 . READER SEGRenVoaIC, EIll inPoAisG 6E01 35 POPULAR ELECTRONICS c z . .. z EXPERIMENTER'S « KD1111 .I IC VARIETY PACK 12 BUILD . PROJECTS COMPLETE INSTRUCTIONS ENCLOSED . RCA j Electronrc Components'f Harrison: N.J. 4251 BO Experimenters Hobbyists Servicemen Whatever your direction, let RCA show you the way ...with RCA's New Linear IC Vari- ...with New Crystal and Zener ...with KD Experimenter's Kits, ety Pack-KD2117 Diodes Manuals, and Publications Here's a great way to extend your in- In addition to its quality line of SK re- Your RCA Distributor can be your one - tegrated circuit know-how-Kit placement transistors, rectifiers, and source headquarters for Experiment- KD2117 provides a basic introduction integrated circuits, RCA now offers 4 er's Kits, hobby and Experimenter to practical applications of these in- zener diodes and 5 crystal diodes! Manuals, Hobby Circuits News, and triguing devices and an inexpensive RCA's Solid -State Replacement Guide, way to build useful projects. The pack ...with RCA Hobby Circuits News, SPG-202G, a cross reference for al- HCN-3900 includes 2 KD2114 transistor arrays; 1 most 13,000 solid-state devices that KD2115 audio amplifier; 2 KD2116 This is an exciting new publication RCA's SK's replace. Available from transistor arrays. Also, instructions for loaded with interest for hobbyists and your RCA Distributor. RCA Electronic experimenters...published periodi- 12 useful circuits, schematics, parts Components. Harrison, N.J. 07029 cally. lists, etc. CIRCLE NO. 23 ON READER SERVICE PAGE June, 1969 7 introducing . . . etters S-DeC breadboard: FROM OUR READERS HAM SPEAKS OUT While reading through "The Hatfield Hams and the CB McCoys" (February, 1969), I found some very debatable points. I'll start by for easier stating that I have had my ham ticket since January, 1958, and worked the old 11 -meter circuit building ham hand before it was turned over to the CB'ers. I don't miss the band now, and I An S-DeC contains 70 push -in contact don't regret that the FCC took it away. Nor points which are arranged in two sets of am I against CB radio the way it was origi- five numbered rows with each -five póints nally set up. However, I have only contempt jtohiinse pda ttteorgne thise sr imbiyla ra tole tahfa -st purisnegd binu'psboapr-; fCoBr 'etrhse wmhao joirnitsyis-ta nodn Ir agm eacnh ewminagjo, rsitiygn-oalf ular wiring boards. Larger circuits can be reporting, and operating with illegal linear made by keying units together to form a .. amplifiers. These CB operators have really continuous breadboard of any size. fooled themselves into believing they are hams. Csoocmkeptosn ewnhtse rea rteh eys imaprley ' hpeuldsh esde ciunrfeol y thbey anT oe mceirtge enacny eaxraomsep lein, aobuoru tc ittyw oo f y1e0a,r0s0 0 aigno- double -leaf .phosphor -bronze contacts. habitants, and the CB operators were on This system ensures a good wiping -action hand to assist; well and good. But a spokes- on insertion and withdrawal, giving low man for the CB group told the local news- contact resistance. The accessory kit pro- paper they were ham operators; not so good vides' solderless connectors to use with -in fact, a black eye for the hams. Imagine controls. which are mounted on a panel CB'ers passing themselves off as hams! slotting into the S-DeC base. The POPULAR ELECTRONICS article implies S-DeCwith control' panel, jig, 'accessories that rag -chewing CB'ers used to exist. The and project leaflet. $5.75 each DeC STOR=Two decks,: control panel, jig; áccessories, project. leaflet with corn- pónents tray all in .black plastic box. $11.75 each 4-DeC Kit=Four decks,- .two 'control panels, jigs, accessories, and - project book in áttractive plastic -case. - $20.75 each INTRATEC 399 Jefferson Davis Highway Arlington, Virginia 22202 Please send me postage paid: S-DeC's @ $5.75 each DeC STOR @ $11.75 each 4-DeC's @ $20.75 each I encloVsae. ar escihdeecnkts/m oanded y 4o%rd esr alfeosr $ta x fisa ctth ei s,o nhlyo wkeinvder ,o ft hCaBt 'etrh iosn tythpee aoifr -oapnedr atthoer Money refunded if not satisfied. clan is growing. Furthermore, I can show you antennas all over the countryside where Name the CB'ers don't even pretend to comply Address with height regulations. Some CB operators here even use linear amplifiers with more City than 100 watts plate power input. (A sup- State Zip Code posedly reputable TV sales and service shop Box PE -6 here sells linear amplifiers to go with their I. CIRCLE NO. 14 ON READER SERVICE PAGE POPULAR ELECTRONICS TaIkábüúté-IeótróAic' iermarket j 11.(421 ¡ ú+ ~Tx -{ A I OVER t - .,.,. . . -. 80. 0. - h !tr9'?POPULAR, NEW I PRODUCTS It loi every hoesehold use TEST EOUIPAENT-TOOLS - EEPERIMEN-ERS A LAB SUPPLIES 1. `* .-.111. '1 coCAnoutnrtovOoel mnnu -iaOentnifitfct SfroTewrimm itacoenhtrye EMSRLIPEKEESECAISSTK TREO-ORRNBSS IC B i MAA CUCDOC INEO&ST RSTAAOOCPRLCESIEE SASSC OCRESIESSCO ARPIEASC ITORS applsiaentsc ef,o rt imaneyr icnotenrtvraoll 1 METERS -ROILS -RELAYS-TRANSFORMERS up to 60 minutes. SWITCHES -LAMPS .WIRE -CABLES whiBtee acuatisfeu,l geryetreanl oanngd ANTENN-A HARDW-A RE 12 foot cord. PLUGS IAyKS BATTERY HOLDERS Installepdl uigns sienctoo nadnsy - D-.rtaH Ask Nwfooar. ICN Oa4ut.a0tlle0ot5g. - NhuorwO raet desa cohf ilto=cmast iofonr, ' heuvnedryreodnse a..n d 5695 hobyist. enthusiast, amateur, honeowner, executive, do-it-yourselfer. See the SELFSERVICE GC CALECTRO display at you CALECTRO ELECTRONIC SU'ERMARKET TODAY! _ z Telephone Amplifier Dynamic Microphone for Group Listening with switch caPllesr feactt thfeo r ofaffmiceil,y ocra ll"sh aatn dhsomfree.e "c oonpfeerreanticoen Fwoofofrr esshw igiathcn hdf. i dmFeuloistlyidc i.n rgeB cudoierltds-iiknn g t oon0p1. 700 Locations when taking orcers or instructions by phone. stand. Dual plug for most tape I Suction cu3 pickup attaches to outside recorder inputs. all over the country of phcolenaer, . bBrinugilts- inin vcoolnumveer scaotinontrso l loguodv earnnsd A$s3k9 5f or Catalog No. 04.186 and Canada Ask lofourd nCeastsa.l ogB aNtote. ryN i4n$. 19k09it53. rIGmrepmeadeannCccye : R2e0s 0p oonhsme:. Rsoe -nsoscdoiw clyp:s -5600 Sanede ySoAuVrE e! lecLtroOnicO pKarts distributor In the Yellow Pages under "Electronics" ELECTRONICS and call your Calectro source. This G -C CALECTRO HOBBYIST HANDBOOK" is available at GC CALECTRO ELECTRONIC SueER. MARKETS. WRITE TODAY and we'll CALECTRO wirGC give you the name of your nearest ELECTRONICS O,wswn of Nydrometals. Inc, 400 SO. WYMAN ST. ROCKFORD, ILLINOIS 61101 CIRCLE NO. 12 ON READER SERVICE PAGE June, 1969 9 LETTERS (Continued from page 8) Which of these CB rigs, and not under-the-counter, either. They're right there on the shelf, complete with price tag.) 4 fascinating I played dumb about radio with the sales- man in the TV shop. I asked him a few ques- tions about CB and just let him talk, but Radio -TV until he thought I was really interested in buying a linear, he referred to his linears careers as battery chargers! Then I asked for the names of some satisfied CB'ers, and he obliged. Why, I could have been an FCC in- spector for all he knew. interests One more point: some manufacturers make fF linears to cover the 25-50 MHz "business" ? band, but state in their advertising that the linears are "not for CB use." They might as well state "for 27 -MHz band, not for CB use" disc jockey if they were really looking to drum up busi- newscaster r ness. The obvious reason for mentioning CB at all in the advertising is that CB'ers are sportscaster prime sales targets. announcer The FCC has recently tightened up on hams with incentive licensing. Now I feel it is time to tighten up on CB operations by encouraging the FCC to acquire more mobile Our Free Voice Analysis Tells You monitoring trucks to visit these small towns. Whether You Have The Talent To Also, handing out more citations to rule Become A Broadcast Personalty! breakers would help clear up the mess and give the good name back to ham radio and IMMEDIATE DEMAND Radio -TV stations CB as well. everywhere need both men and women to take over important good -paying jobs JEFF LUTIIER, K4TRY right now. NATIONWIDE PLACEMENT AS- Union City, Tenn. SISTANCE at No Extra Cost. TRAIN AT HOME OR IN ONE OF OUR STUDIO SCHOOLS You can study broad- ctiamset , toerc hinn iqonuee so f aotu rh ommaen, y isnt udyoiou rs cshpoaorles NYSTAGMIC vs SACCADIC EYE MOVEMENTS throughout the country under the super- The part of "The Dizzy Machine" article vrNnisaoituoiosnn aoBlf rHooaoudmrc eaD sSitreteurcsdt.yi n gCA ocuFcnraeccdiul ilttaeynd d o NfM a1et1mi obnFeaarl- d(Aizpzrinile s1s9 69is) tahcactu rdaetea,l s bwuitt h thney straegstm uosf atnhde Association of Trade and Technical Schools. article leaves much to be desired. Electro- nystagmography is only one phase of a gen- '.,1A pproved``. for` Veterans', Educational eral technique called electro-oculography ; ,Assistártce Benefits-("G.l. (EOG), the study of eye movements by means 4 Check- cotipon,for special. inforn ató n' of changes in electrical potentials produced in the surrounding skin. Some of these Send to CAREER ACADEMY's division movements, which have a sawtooth pattern of famous broadcasters for free book- and are of low amplitude and relatively high frequency, are nystagmic. However, they are let, record and voice analysis details! not associated with dreaming; the move- ments associated with dreaming produce much higher amplitude, fairly short rise CAREER ACADEMY time, lower frequency patterns. These are saccadic or rapid eye movements. 825 North Jefferson Street Studio 384 The movements studied in reading are Milwaukee, Wisconsin 53202 of still another kind, more closely related wI owrtahn t detove loknpoinwg . if PI leahsaeve rubsrho amdcoares tiningf oramp aittiuodne. tIon fsaacctc, atdhiec utshea no f toth en yEsNtaGg moric evmeonv EemOeGn tisn. speech pathology is neither widely used nor name age accepted. Finally, while some psychologists make wide use of EOG (including ENG) in a variety address phone of ways, few of us are concerned with ESP. In any case, it is not nystagmus but lesser city/state /zip frequency REM which is probably used as an O,N097205 index in dreaming in ESP studies. I. I amS chinotoelr eSsttueddy in: HGo. mI.e BSillt udy ChiefA NRUe7süe; aMrc.h WCElIiTnZicEaNlI IPOsFyFEcRh,o lPohg.iDst. Veteran's Administration Hospital Oklahoma City, Okla. CIRCLE NO. 6 ON READER SERVICE PAGE 10 POPULAR ELECTRONICS