Iconts Ica Transceiver

Although the four buildings at 73 Magazine are each more than a mile apart, no telephone is needed when new equipment arrives for review. The 73 hams start forming lines the minute word gets around that equipment has arrived. Responding to that call, I was informed that the senior staff was so pleased with my previous reviews of dummy loads, power supplies, and BNC-to-garden-hose adaptors that they were going to give me a shot at a real radio. Real radio is an understatement when It comes to...

Info

16 hit V . 2 MH doch. 3K RAU ROM Breadboard space Exofent for contfol. Bare Board sza.50. Full Kit 593-Q0- Monrtui SM DO. Power Supply Krt J35.00. Tiny Bast Stale or itw a ong answer Wo tuning necessary 103 compatible 300 baud i jpensire acouslit coupler plans includes Hd only 17.00 Anide m J tine flad o E ctmrncs Converts digflaf clocks from AC line frequency to crystal lime base. OutstandJiig accuracy Convert TV aal Into a high quality monitor w o atfeciiny uwfle Comp kr wM Instruc Sv 5 amp...

WBUS

Rf probe indicated 29 A These same approximate readings occurred at each section, right down to each end. in other words, I had a uniform radiating surface over the entire length of the antenna Remember, this antenna is only 3Vi feet above ground It didn't take me long to get back into the shack and fire up on 40 meters, The first thing that I noticed was that the receiver was very quiet. Signals were right up there in strength. I made three contacts fabout 200 miles) and my reports were Q5 and...

Hygain

TH3JRS Jr Thunderbird, 75UW PEP HQ-2S H y Quad 2 Element TH5DXS Thdndertirr-j 5 Element TH3MK3S munderbifd, 3 Element TH2MK3S Thund+ rbird 2 EU.-ment TM7DX Thjnderbird. 7 Eleftit-il 392S TH DXJ< Common Kir to Th7DX 105BAS 5 Element 10m Long Jonn 155BAS 5 Element 15m 'Xonq John1' . 205BAS 5 Element l j.hn 14AVQ WB5 tO Om Vedical 1& AVT WBS lO-6 m Veftital V-2S Cc ear Ga.n Vesical loi T74 M Hz BN-8C ernte Satun. 10-80 meiers H DR-300 Deluxe floior Digiial Readout 1150.00 1235.00 1215.00...

MFJ

MFJ-BT-2, S29.95 Read SWR from U 1 0 VHz to monitor antenna and feediines Read torward and reflected power ai 2 meters n 44 148 MHZ). 2 scales < 30 and 300 .v tts) Read relative field strength from 1 to f 70 MHf Binding post for IreEd strength antenna Easy push-button operation has lorward re fleeted and SWR field strengfh push buttons. Aluminum eggshell white, black cabinet. 4Vix2Vix2a> V SO 239. 7 color meter scale. MFJ-fllO. 24.95 simitar to MfJ812 less...

Ne572 Compressor Circuit

Advanced Analog Systems has announced a design evaluation kit for the Signetics NE572 dual-programmable compandor The kit, designated AAS572 contains a printed circuit card, integrated circuits, and all components necessary to construct a complele audio compandor. The system consists of two compressors and two expanders. Input to the compressor section consists of a high-performance, low noise voltage follower, The system can be evaluated with eithera single 2 1 compressor or by switching the...

All Band Trap

FULL 1 4th WAVE - All Sands Automatic Selection with proven Hl-Q Traps, 3 Models-ALL self supporting - Ground ot roof mount HEAVY Double wall seamless Aluminum lower section - H STRENGTH FIBERGLASS TUBING OVER -ALL. NO WOBBLY, LUMPY TRAPS - NO UNSIGHTLY CLAMPS needed - Same tlie alt the way up - Traps hidden Inside. Von can use It In a 1 ft. sq. DackyardI Neighbors will never know ihfe is a Hi-Po*er ALL Direction OX Antenna. FOR APARTMENTS. ROW HOUSES, MOBILE HOMES - CONDOS etc where min-tmiim...

Corrections

Does anyone have informs tion on the whereabouts of VP6LX (April, 1963) or W2PCJ KJ6 (August, 1963) Can anyone suggest a cure for the rf feedback coming out of my TS-130's headphones and speaker when I use 10-meter phone Marvin Rosen N3BQA 20 W. Madison St. I would like to hear from collectors of antique radios, Ed Best AK4W 2004 University Dr, Durham NC 27707 (919 489-2164 I am looking for any Information on changes that can be done to a Heathkit HW-101 to better its performance or add extra...

Hygain Antennas

18 AVT WB 1 O-SOm vertical CALL 14 AVQyWB t0-40m vertical CALL TH3MK2 1 0-1 5-20m 2-element beam , . CALL TH3JR 10-1 5-20m beam CALL (Most anrfirings now with statnfess hardware) CUSHCRAFT (Call for other Cushcraft items) AV3 10-1 5-20m vertical 41.50 AV5 10-80m vertical 66,95 ARX-29 Ringo Finger flr 2m vertical 34,00 A321 9 2m Boom DX beam. . 74 00 214B 539 144-146 MHz boomer, . 60 10 21 4FB 144.5-148 MHz FM boomer. . 60 10 2208 220MHz SSB boomer 68.95 A147-11 11-element 2m FM beam . . 33 95...

Conteste

THE NEW WEATHER SATELLITE HANDBOOK by Dr Ralph E Taggart wbsdot Here is ihe pompleiely Updated and revised edition ronlaimrtrj < iil the trifflrma-lion ori ihe most sophistir ated and effective space craft now in orbit. This book setves both the experienced amateur satellite enthusiast nnd (he r+ corner It is a trcduct'On to satetHle watching. prcv> ding all ine m'ormaii& r- to tonstruti a complete and highly effective ground station Solid hardware design , and ail ihe instructions...

Cushcraft

A3 3 Element Triband Beam , . , 1167.00 A4 4 Element Triband Seam 1204.00 A743 7 i 10 MH Add On for A3 15500 A744 7 i TO MHi Add On for A4 1SS.Q AV3 3 Band Vertical 1020m . 14100 AV4 4 Band Vertical m40m tft2. 0 AV5 5 Band Vetltcal 10-80n BA 00 R3 14 21.28 MHi Ringe 1204.00 32 19 Boorrter 19 Element 2m r 175.00 214B Jf oomer t4 Yemeni 2m 1.00 A147-11 2m II Elemen Antenna 134 00 A147 4 2M 4 Element Antenna 123 00 ARX-20 134 64 UH Ringo Raffle' II 134.00 A144 10T 145 MHz to Eiemem W1.00 A432 20T...

Ft Ts Ts Filter Cascading

Probably he most popular units ever produced these solidly built transceivers ,vere built to LAST if you can Irve without gadgetry, why replace your reliable time*iested ng with a cosily new modeP Especially since you can easily make your receiver equal in selectivity and ultimate rejection to an> now on lhe market with an jnexpenstve Fox-Tango Filter-Cascading Kit CONSIDER THESE FEATURES * Easy installation - 30 mmute average * No drilling switching, alignment * Results ot 16 poles of...

Amateur Radio Innovations

More heat, which causes more current. Eventually, the transistor can self-destruct VMOS FETS have just the opposite effect-more heat tends to decrease current flow. Mismatch burnout occurs in regular transistors when an impedance mismatch occurs between the load (antenna) and the output network. This is seen when a high swr exists such as with an open line or non-resonant antenna. This condition can destroy most transistors quickly, but the VMOS FET comes through with flying colors. Additional...

VISA

t' Ltst Qt Advertisers on page 30 V electronics 2111 w- camelback road TVRO CIRCUIT BOARDS Satellite Receiver Boards Now in Stock dual conversion board 25.00 demodulator board 40.00 This board provides conversion from the 37 4.2 band first to This circuit takes the 70 MHz center frequency satellite TV sig* 900 MHz where gain and bandpass filtering are provided and, nafs in the 10 to 200 millivolt range, detects them using a phase second, to 70 MHz, The board contains both local oscillators,...

La

Be Heard< Give your hand-held the boost it need si LA2030-Selectable power output Low r1 watts) or High (30 watts) iall models) Power Input 1 SOrnW - 300 mW (LA2030A), 300mW -600mW (LA2030B). 15 - 2.5 watts (LA2030C), Choose the model that's right tor you Fast acting protection circuitry * RF level indicator * BNC input. 30-239 output Compact size SOW x 42H x 121D m m Daiwa cross-needle convenience i n a compact case Get SWR and Power readings in a smgle glance CN520 Frequency 1.8 - 60 MHz...

Switching Modification For The Heath Tuner

The Heathkit SA-2060 antenna switching problem described in the review is easity correctable. The purpose of this modification is to disconnect random wire or balanced feed antenna terminals from the tuner circuit unless switch position COAX 2 is chosen. As originally designed, the random balanced antenna terminals were connected to the output of the tuner before the antenna switch. Thus, if an antenna was connected to either of these terminals, it would always be fed in parallel with any...

Vhf Duplexers

This duplexer was made for RF Harris Mobile Phones and Two Way Radios. These duplexes can be used in any mobile phone or two way radio system, along with having the capabilities to be modified for UHF use. The physical dimensions are 3 3 5 Long, 4 275 WideH and 1 1 10r Deep. The approximate weight is 18ozJl lb. 2oz., PRICE 74.99 * Operates as a regular telephone on touch-tone or rotary diaJ systems * Ni-Cad rechargeable batteries included in tetephone * Charger built into base transmitter *...

Fast Scan

A modular approach for your own custom-designed ATV system Here's how txas-4 atv excite rjmqdu la tor. 89 ppd Tmt I* motto ta designed To dum the k- . 10 moA. - -r PA5 1 - Mi ms Tlw eryvtt* in in TOO THZ region Keeps PUU 'rt. - ft- ' hi -i - ta moauUlor it fulFfl mH for computet grap ci endeol Rf . 1 J . J I- , . fOma * If- r-.i - Old o OJ 2i nHi Pwvi*i fi Two frequencies available Tmt I* motto ta designed To dum the k- . 10 moA. - -r PA5 1 - Mi ms Tlw eryvtt* in in TOO THZ region Keeps PUU...

Luly Telecommunications Corp

Sox 2311, San Bernardino, California 92406 Dealer and Distributor inquiries Welcome Completely portable Antenna, comes Lilly assembled folds like an unhrella and is not a kit). 1 The Polarizer is an electronic rotator, which can change polarities with a flick of a switch no moving parts). Eliminates weight twisting cables, freeze I ups, and down time. tab notching P ug qq t nibbling shipping Send for your FREE literature and SHEET METALWORKER BULLETIN

Elmer Lives

After reading the November, 1981, issue, and noting the letters to the editor from Frank D. Windsor and Tom Taorimina f felt that I could no longer be si lent. I am an aspiring Novice who hopefully will have upgraded to General by the time you receive this. I became interested in ham radio as a youngster, but did not have the time necessary to de vote due to college, medical school residency, and then early struggling years of practice, in November, 1981, f learned the code and began to study...

For Toll Free Ordering Call

f JK Pleasa contact th advertisers directly. 1 SffTT III To receive full information from our advertisers J I vUW I UClW please complete the following postage-paid card, n,SL a P fl RS.No Paga R.S No. Page RS No. Pag 2 AEA'Adudneed Electronic Applica Dakota Microwave 63 38 Jameco Electronics T77 bi Radio Amaleur CaHDOOfc. Inc. ltofii 23 17 Dietectfc CcfTwn 62 39 Jan Chili's ri Radio P D iCations inc 75 191 A A Alances Eie ironic Ad pi gt ca Cerne Esectronics. rnt 1 2 Jensen Tod s 397 Raoa...

Portable Oscilloscope

Heath Company is introducing its first portable oscilloscope. The I -3220 20-MHz oscilloscope can be used for most electronic measurement and comparison needs, it offers dual-trace capability, X-Y inputs, and a special algebraic add function. The I0-32201s sensitivity allows it to measure vertical signals as low as two millivoits. The scope's accuracy is rated within three percent on both horizontal and vertical measurements. The 10-3220 oscilloscope is sold in kit form for 68995, A factory...

Mfj New Indoor Active Antenna

Sits on your desk realty to listed to the world Rivals. can often exceed, reception 't Quisle fortq wire Unique Tuned Active Antenna miiu miZes ir-termod. provides RF sefectwity duces noise outside tuned band Also use as preselector for external antenna. Covers 300 KHi to 30 MH m five bands. Ad ustable tele scoping antenna. Controls. Tune. BjncJ Selector Gam, On OH Bypass. LED. FET, bipolar circuitry. Phono jack ior external am 6 2 6 inclws 9 1 VDC or 9 V tetlery ior portable use 110 VAC wjfti...

Model Series Plugins

1 03A Ditferenhal 1604A Quad Trace 50 MH 1007A Duat Trace 50 MHz 1815A TDR Sampter wilh a 1816A DC to 4 GHz 1621A Time Base amp Delay Generator 1822A Time Base amp Delay Generator 1 40A Time Base Delay Generator 4 Time Base amp 0eLa' . Generator For 183A Onty. Hj tU TELE UIPMENT MODEL 063 Oscilloscope Dual Trace Portable SO MHz With a V4 andS2A Plug-In Dual Trace 65 MHj portable TEKTRONIX 10 MHz with a 3A6 Dual T ace and a 3A72 D ai Trace SM07 50 Bench 50 MHz itn a CA Dual Trace S1000.00 Bench...

Tm

The model CK-2 CONTESTER is part of the latest generation of famous AEA computerized electronic keyers. Like many of our other innovative electronic products, the Contester keyer utilizes a custom AEA microcomputer with proprietary copy-written software. The CK-2 retains virtually all the remarkable features or the CK-1 predecessor such as an automatic serial number generator, large soft-partitioned memory with editing capabilities, etc. In addition, we have added CMOS memory with internal...

Heath And Hams

Who builds the best Amateur Radio gear around You do Thousands of Hams attest to the reliable performance, specifications and long-term dependability of Heathkit Amateur equipment. Not to mention the thrill of airing a rig that you ve built with your own hands. The more than 200 Hams at Heath invite you to oin the fun. For over three decades, our unique We won t let you fairphilosophy has created a strong partnership between Hams and Heath, the world's leading electronic Kit manufacturer Heath...

Wjl

Modulator circuit from the Signetics application notes. The circuit is very simple and gives excellent results. Although the PLL is being MWA-120s, you should buy your 564 from a reputable supplier and avoid the surplus outlets. You might want to buy an extra just in audio and AFC-1 pickoff points are at the emitter of this transistor. The AFC-2 junction point is on the collector of this transistor The de-emphasis filter also connects to the 2N2222 emitter, and then goes through an audio trap...

Mfj Econo Keyer

Same as Mf J 401 but has b lll in single paddle with adjustable travel. Also jack for external paddle 4xZx3W. Optional Bencher Iambic Paddle, 42.95 11QVAC adapter. MFJ 130b, 3.9 Free catalog. Order from MFJ and try it. II not delighted, return within 30 days for refund less shipping One year unconditional guarantee Order yours today. Call toll tree 800-647-1800. Charge VISA MC Or mail check money orcer Add S4 00 each lor shipping and handling Can 601 323 5869 for tec...

Morsematic Keyer Update

Advanced Electronic Applications. 1nc,T has announced the latest generation of the Morse-Matic keyer, the MM-2. The MM 2 is a full-feature paddle-input keyer that offers virtually all the features of the MM-1 predecessor plus CMOS memory and a new price lt Like the MM-1, the MM-2 offers features that include an automatic serial-number generator, an automatic beacon mode, and an automatic speed-increasing Morse code trainer mode. The MM-2 keyer comes in an rf protecting metal package and is...

Professionalamateur Antenna Series

Proam Valor Antenna

Valor Enterprises has introduced the Pro-Am ProfessionalAmateur tine of antennas, mounts, and accessories that are compatible with the Motorola TAD and TAE mounts, a system used extensively by the amateur and commercial communities. Four mounts are offered. The mode PAS 11.25 is a basic surface mount that installs in a V hole lower left in photo . Valor's model PAS38 11.25 basic surface mount installs in a ,r hole lower right , while the model PAT SI4,85 is a no-hole trunk mount upper right -...

Mt Saint Helens Qso Party

The Ctark County Amateur Radio Club, W7AIA, is pleased lo announce the second annual QSO party marking the second anniversary of the cataclysmic explosion of nearby Mt. Saint Helens, This disastrous volcanic eruption took the life of Reid Blackburn KA7AMF. who was an active member of their club. Reid was monitoring a USGS observation station near the base of the mountain at the time of the eruption. Any amateur station making one contact with W7AIA during the two days of the QSO party wiH be...

Noradial Vertical Antenna

Cushcraft has introduced the R3, a noradial 10s 15 and 20meter gain antenna. The R3 is perfect for limited-space applications like condominiums, apartments, mobile homes, and small urban lots. It is a Vj wavelength, endfed 22' radiator with remote tuning for broadband coverage, installation is very simple, with only one square foot of space needed, it also can be telescoped for easy carrying and storage, Because of its unique design, the R3 does not need a tower, rotator, large support mast, or...

Rih

Communications accurately with BFO Pitch Control. Want to bring in your favorite programs without lifting __ a finger Then consider the Panasonic RF-6300 8-band AM FM SW receiver WBK g t0 go MHz has microcomputerized preset pushbutton tuning, for program- TnfT rning 12 different broadcasts, or the Hiph same broadcast 12 days in a row. Auto- H matically. It even has a quartz alarm clock that turns the radio on and off to 7 __7 l play your favorite broadcasts. The Command Series RF-3100 and...

The Ces Microdialer

Roller Inductor

For those who have never encountered an autodialing microphone before, it is a device designed to store several phone numbers and feed them into an FM transceiver at a predetermined speed at the press of a button. This is the basic function it must perform but manufacturers and users alike soon discover that an autodiaier must have several other features to perform adequately in the real world. Like the Heathkit Matic memory keyer to be revrewed in June , the CES Microdialer is a second general...

Hi

Mwa120 Schematic

One stage of the low noise ob's Own LNA ' 73 Magaz average technician can easily duplicate our system You don't have to be a microwave engineer tu make it work. To develop the complete satellite TV receiving system, we used 15 square leet of printed circuit board, 18 pounds of ammonium persulfate etchant for the board, 5 pieces of 10 X 20 photo reversing ntm making negatives for boards, 48 pounds of coffee, and 32 cartons of cigarettes. We designed, built, and debugged approximately 40...

Library

B amp b Gto Get more fun out of short1 i listening itr r. s Interesting guide to receives antennas, frequencies. ana interference. BK7307S4 45 TH CHALLENGE OF 160- is the newest booh in the 75 lechnicat library dedicated lo T60 meter operating. Si Dunn provides at necessary information to get started on this unique bjnd. The aiHmpoitdnt antenna and ground systems are described in detail. The mtroduct ton contains interesting photos ot Stew Perry s lt the King ot l amp Qi...

Isopole

Outstanding mechanical design makes the IsoPole the only logical choice nector is recessed within the base sleeve fu iy weather protected - With the IsoPole. you will not experience aggravating deviation in SWR with changes in weather. The impedance matching network is weather sealed and designed for maximum legal power. All IsoPole antennas are D C. grounded The insulating material offers superb strength and dielectric properties pius excellent long-term ultra-violet resistance. Alt mounting...

Newsletter Of The Month

Amateur radio publications don't have to be either strictly local or strictly national in scope. This month's winner, Kan-sas Amateur Radio, is a good example of a regional publication. Editor and owner KC0GL publishes K.A.R. quarterly in a magazine format. The January issue is printed on glossy stock and is 24 pages long. The layout is neat and the graphics are good it's a professionai-appearing publication. Kansas Amateur Radio covers what its name implies the whole range of ham radio...