Alltronicshoward Model L Rtty Converter

Telewriter Medel frequency shift converter designed rar two-tone AM or Fii with iimiter operation available by switch. Solid stale ratio corrector compensates for fad] iff siiri^lä- permits copying on Mark or Space only. Selector magnet dc loop supply built-in with bias supply and o^tal socket for optional pMar relay to key transmitter. Gtt'ft keyer tube, Ptug-in discriminator for 850 cycle or other shifts. Cathode rap or dual eye Indicator. Auto-start control system optional. Friers for 19" rack mounting Model "L11 with dual eye StD3+ Model "L" with C. R, tube indicator $279, Cabinet £19,50


Ugk ID, Boston, Mass. 02101, Tel, 617-742-0048

it Price—$2 per 25 words for noncommercial ads; 55 per 25 words for business ventures. No display ads or agency discount. Include your check wifh order, ir Type copy. Phrase and punctuate exactly as you wish it to appear, No all-capital ads,

+ We wlli be the judge of suitability of ads. Our responsibility for errors extends only to printing a correct ad in a later issue, it For $1 extra we can maintain a reply box for you*

i We cannot check into each advertiser, so Caveat Emptor . * .

ALL Makes oi new and used amateur equipment, Write or call Bob Grimes, 89 Aspen Road, Swamp-scott, Mass. Tel: 617-598-9700 or 617-598-2530.

CONVERTERS. Worlds largest selection of frequencies, Ham TV vidicon cameras and parts at low factory-direct prices. See them now in our full page ad in this issue. Vanguard Labs. l%-23 Jamaica Ave., Hollis, N.Y., 11423.

WE WILL PAY CASH: Wanted, popular, late model unmodified amateur equipment. Highest prices paid for clean good operating gear. Write Graha:Radio Dept. 100, Reading, Massachusetts,

ARE YOU SINCERE? Are you really looking Tor the best deal on a new or fully guaranteed used unit? Let us convince you with a specific quote that will really save you money, Graham Radio, Dept. 10, Reading, Massachusetts,

MOTOROLA new miniature seven tube 455 kc if amplifier discriminator with circuit diagram, Complete at 52.50 each plus postage 50c each unit, R and R Electronics, 1953 South Yellow-springs, Springfield, Ohio.

COMPLETE CONVERSION instructions for the AN/VRC-2, just $1 while the supply lasts. 73 Magazine, Peterbirough, N. H, 03458,

WANTED case for Morrow receiver, WA1CCH. c/o 73, Peterborough, N.H. 03458,

SIX ASSORTED ISSUES of ATV Experimenter, circa '64-*65, $1 from 73 Magazine. Peterborough, N.H 03458.

SCHEMATICS FOR either the ARC-508. or the ARR Id, both described in June '65 issue of 73. only 50c each. 73 Magazine, Peterborough, N.H. 03458.

1963 BOUND VOLUMES OF 73. $15 each from 73, Peterborough. N.H. 03458,

INVESTOR to promote the New and Unique Barb'd Wire Antenna, notify WA6CTK, C. Leroy Kerr PO, Box 444 Montebello, Calif


Phasemaster Jr provides 60 watts PEP; sufficient to drive most KW linear amplifiers, 73 Magazine. Peterborough, N.H. 03458.

WANTED: General Radio model 1140A wave-meter. W1DTY, RR Box 138, Rindge, N H.



W9CGA. Complete schematics and operation data on many popular ham receivers, transmitters, transceivers and power amplifiers. $2,95 from 73 Magazine, Peterborough, N<H. 03458-


WJDBM. This is a complete handbook that tetls you how to cure your TVI problems. $1,75 from 73 Magazine, Peterborough, N.H. 03458.

CONVERTERS, three transistor. 50-54 m in, 14-18 mc out, wired, tested, printed circuit. Crystal controlled, $10 ppd. Tuneable, S8 ppd. Syntelex, Lucille, Dumont, N,J, 07628,

25 WORDS FOR $2. Sell or buy through these want ads, a terrific bargain, Caveat Emptor, 73 Magazine, Peterborough, N.H. 03458.


W6SAI and W6TNS. Limited quantity for only $2.50 each. 73 Magazine. Peterborough N.H 03458.

RTTY GEAR FOR SALE. List issued monthly, 88 or 44 mH toroids five for SI.75 postpaid. Elliot Buchanan, W6VPC, 1067 Mandana Blvd., Oakland. California 94610.

SALE and bargain list. Send for it and include SASE. Write Paradd Sales and Engineering Service. 280 Route 10, Dover, N.J. 07801-

PLASTIC HOLDERS—each display 20 QSL cards. 3 for SL00 or 10 for S3.00 prepaid and guaranteed. Free brochure of other ham goodies included. Tepabco. Box 198N, Gallatin, Tennessee 37066

FREE CATALOG—loads of electronic bargains, R. W. Electronics, Inc., 2244 So. Michigan Avenue, Chicago, Itliniis 60616,

TOOOBES: 811A—$4.25; 7094—$26.90; 614GA—$2,55; 6CW4—$L40; 5894—S15.50; Extra power 6146B— $4,00; 6360—§3.45; 823r^-$9.5(h All new, boxed guaranteed. Free catalog. Vanbar Distributors. Box 444Y, Stirling, N.J, 07980.

HAM TV. Toshiba 7038 Vidicon, $5,00; RCA 7735A Grade C, SI0.00; Vidicon socket, $2.00: 15.75 Kc crystal, $14,00; RCA Image Orth 5820, S10.00. WB2GKF Stan Nazimek. 506 Mt. Prospect Ave. Clifton, New Jersey 07012, if Signal Corps Instruction Books, Army Electronics Extension course handbooks—many titles, Free List. Also, RTTY lists, Great buys. Jim Cooper, 834-Y Palmer, Maywood, NTJ 07607.

B & W TRANSMITTER 5100-B, not used, $295 SENECA 2 & 6 Meter Transmitter, like new, $135. WA20WX, Ludwig, Accord, New York.

HT37, SX101 At package deal only, $410 Will not ship. Pickup at Roslyn, LX, N.Y. Rodin, call 9-5 (516)1V1-9S44.

GONSET GSB-201 LINEAR, 2kw, $200.00, Like new condition electrically and physically, Unmodified. Will ship F-OJB, K1SLZ, Box 284H Lexington, Massachusets 02173. i617) H62-6356.

1-34, with SBE mike, mobile mount, Hustler 20M antenna. Excellent Condition, W3GSC. 3172 Colony Lane, Plymouth Meeting, Penna, 19462.

WANTED: TEST EQUIPMENT, laboratory quality such as Hewlett-Packard, General Radio, Tektronix. etc. Electronicraft, Box 13, Binghamton, N. Y. 13902, Phone: (607)724-5785,


Paid over ony top offer for any piece of aircraft or ground radio units, also test equipment, All types of tubes. Particularly looking for 4-250 * 4-400 * B33A

• 390A • ARM ■ GRM * GRC * UPM - URM ■ U5M units.

RT220 ARN2I TA< 'AN Transceiver UttM2l3mc ...KX 115.00 MT928/ARN2I TACAN TransreiTPr Mount with PluK KX 7.50 Ci7B3 ARN2IA T AC A N Trui-celr er Control Box .. *:X 9M TNI8/APR4 Tuning Unit 300-1000tnc. With Tubes. . EX 27,50 TIYI2B APR9 Tuning UnU ]QOO-86fiGmc. W/Tube*.. EX 32,50 TNB0 A Pf?9 Tuning tnlt 4300-7:r>fli ( W Tih. EX ID22SA APR9 Panoramic Indicator. W/Scbeinatlc .KX 10.50

PP335 Main Power Supply for APRS Receiver KX 14.75

PP337 Aux, Power Supply for TN13(l & TSVil, APKiJ EX MTW or MTGOe APR9 Mount for rVil! und Pi'3^7 .KX 4.50 APRÖ Controf fur swlirhine TN12H, 121K 13Q, 131 . . KX 3i>.fl" Scop© Xformer 1050®3m«, fi ^H Windings, GO cycle NEW 4,75 R3I6A/ARR26 14-Tubc AM FM Superhet. 162-174 meLN22.75 C610 Control Box for BS16A Receiver, W/4 Tuhes 4.50

PP468 Power Supply for K'llflA/APtiaO Reevr. 400 cy. LN 4.75 I D I6UCAPN 12 SCO'e. Mif'J ^UT.DPDT Coax Switch LN 12.75 3JP1 CRT w Mount, Shield? Sotker, Intensifler Fluff,« fi.25

SA325 U Coaxial Switch, SP4T 2SVDC Motor ____EX 4.50

Coax Switch. DPDT Thompson Products NV E1SB22CA LN 3,75 RüflectomeUr S^Tt Urlitee w SI et it. HO lOOOmc ... KX ft. 7 ■=> UPM ft Test- APXfl. ¿7 Tub**, 10 Diode». J15V60cy LN liU5

Complete Manual Tor TS726/UPM8. Postpaid 2.i»0

TSW5 Echo Bo*. 1150-1350mc. lOOua Indicator ...NEW ii.75

Complete Manual for Ts -4"- UP. P.^UMid NEW LE1Q

0AA.2 Test Set. lofi 21 Otoe. 200na 115V60cy NEW 3,50

46 A CO i;* Tube Superhet I75r2:i5mr wo Power 8uppl> 22 5i* Schematic for 4GACU flcceivCr. SIhmv, Power Supply ... K00

RlfHA ARNfi I0U-7S0kc lte^eirer. 4 Bands KX 17.50

C403A/ARN6 Control Jiox for R101A Receiver EX 6.50

1D9IB ARNG BewrJn^ Indicator for 11101A Recvr .. EX MT 27a ARNn Mini tiling I'dt It Hl 1A ItOfrLviir. W^PlUf EX -l.^U AS3I3B/ARNG Station Seeking Looil 100-1750kc ...EX 4.75 MT21H3 UNHG Recorder Moutit W PlUfif & Filier l-N .r:.7ii

Sot of l2o Xtals Type 5675 thru B650Kc---- 1Ift.75

C984/C22A 10S-130mc A.R.C. Recvr Control Box ..NEW 1.75 C45 Control B^x for AltC'l and ARC12 Xceivera <,NEW 1.25

. U. nAIÜCn Mississippi, 39520

Prices: FOB Boy Saint Louis, Terms: Net, Cash.


RT- APW-11 RweIver-Tran^.—1-nlt consists of a mo-able receiver cavity, a crystal detector, a video amplifier decoding circuits; ;.< transmitter aiul circuits for pbulnlnK ¡mdio frequency tones Hut pulse position modulated of the AN/MSiM, The transmitter contains circuit» for ihn-codlng tho roily by raryiritf the spacing between the two reply pulses. The Bit Tr»it3. receives input ptfltes irans-mi tied ut a puis*1 repetition frequency of 4 in cycles per second and ¡i preset carrier frequency ranging between 2680 and 2920 MC. The reply pulses are automatically transmitted si a pro^t carrier frtipn ncy ranging lietween 2700 and Mr. lubes: U/12AT7; 2/2D21: 0AS6; fiAL5: 2C40. Size: 13 i 5H x S". Wt-i 10

PRICES: Used, willi Tul»-—?1J.:O. T m J. Tubfi f5.i>o.

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