Ramblinqs

Editing a magazine is a peculiar occupation at best, and editing this magazine is probably even more peculiar than most. It often seems like a big, unreal game. However, even though the game is a hectic and nerve-wracking one at times, I must admit that I've enjoyed most of the last three years while I've been at 73, and particularly the last year or so while I've been editor, IVe enjoyed meeting many interesting people-authors, readers and advertisers and have learned much about electronics,...

Tester

Tf you've wondered how to check the condition and characteristics of junk box diodes, here's an article for you. It's a simple, inexpensive tester for low voltage diodes. I think that semiconductor diodes are almost as useful in circuit construction as resistors and capacitors. Used properly> diodes are good for all sorts of tricks beyond detecting rf and rectifying ac. Well, I recently saw a chance to acquire a huge batch of assorted computer types at an irresistible price five dollars), and...

1

U Schematic of the VFO and power supply. Regulation is provided for both the oscillator and buffer. If more rf output s required, a tuned circuit (toroid. of course) can be installed in the emitter of Q2 in lieu of the 100 ohm resistor 40 TURNS N0.26E ON 3 e 0,D. RED TOROID CORE Fig. U Schematic of the VFO and power supply. Regulation is provided for both the oscillator and buffer. If more rf output s required, a tuned circuit (toroid. of course) can be installed in the emitter of Q2 in...

Converter Sale

Viding complete ham stations or nothing. And that's about it There is almost always a way to do something if you really want to do it, I found India most anxious to cooperate in the matter of receiving amateur radio gear and willing even to set aside customs regulations to get it. In other countries I found good possibilities of working through U.S, D> a section of the Stale Department, Elsewhere I found the U.S- ambassadors quite interested in helping and there is a good possibility that...

Transceiver CW Filter and Monitor

An inexpensive and simple transistorized accessory unit for improving the CW performance of any transceiver. Just about every transceiver on the market still lacks adequate bu lt-in provisions for CW work that is, a CW keying monitor and sharper IF or audio selectivity for CW, The author previously built0 a tube-type accessory unit that could be used with almost any transceiver to provide these functions. However, being an outboard unit it was not suited for use in mobile or portable...

Info

Produced a transmitter with a minimum number of controls for precise tuning and maximum operational efficiency. The 32S-3B is equipped with crystals for covering eleven 200 kHz bands to cover the ham bands from 3.5 to 30 MHz, Two additional positions are provided for extended coverage of the ten meter band and a third position may be used to cover an additional 200 kHz band in the 9.5 to 15 MHz range. For CW use, grid block keying is used with adjustment of the characteristic from 'soft' to...

Mission Ham Supplies

16 Main Street ntveraMe 3, alHoroia 92SI1 Phoae 193-0523 (am aria 114) Full power input of 2 KW PEP SSB 1000 DC Watts CW-AM-RTTY. More than 20 important advanced features. New HD tank gives more output, especially on 10 meters. More TYI suppression. Most any exciter can drive to full output. 220 115 VAC operation. j 3316 Main Street, Riverside, Calif. 92511 j Sond spec thaet on BTI Linear. , I L QUOTE trade iilowance and terms. r Plaaie send latecl HAM fly*f* Put me on your mailing litt- j...

Iii

FeatheMouch double paddle automatically timed for 5 to 50 WPM. Operates block grid or into mike jack for VOX CW on either sideband. Monitors the signal, too Canadian Hams You May Now Order Direct from M. J. Howard & Co Ltd., 1300 Carling Ave,, Ottawa Ontario, Loot us up e - Dtfptor Hamvention, Oho, Aprii 1-4-15 and N.E. A.R.R.L, Swampseoit, M Canadian Hams You May Now Order Direct from M. J. Howard & Co Ltd., 1300 Carling Ave,, Ottawa Ontario, Loot us up e - Dtfptor Hamvention, Oho, Aprii...

Watt

CUNT SPRING CATALOG ON PARTI ft EC-TlFIEBS TB4N tTORf *S_ ZEUCH*_ ERMSt Jr.cl ltd* postigo FtaEeil, net 30 CODi Field effect transistors are getting cheaper and cheaper, Siliconix has just announced the E100 series of epoxy-encapsulated N-channel junction FET's for as little as 49c in 1000 quantities They're excellent for industrial and consumer uses. Full information on the E100, E101, E102 and E103 is available from Siliconix distributors or Siliconix, 1 I to W est Evelyn Avenue, Sunnyvale,...

General Surplus Sales

LET ONE DOLLAR DO THE WORK OF TEN 0-1 MA METERS Extra large, 2 H x 2 'fW full clear plastic face, calibrated in four easy to read ranges, 0-9 s units, 20-60 db. 0-100, 0-3 watts, fl-G watts. Mounting bracket included S3 95 BRAND NEW. POWER TRANSFORMER 117 vac. 60 cy primary* 30 vet 1.0 amps secondary. Excellent for transistor power suppiy 52,30 BRAND NEW, CAPACITORS Filter type Mallory type WP twist lok 15 mfd. 2(M)vdc Mallory aluminum can 500mfd, v 200vdc S1.95. Mallory aluminum can iOOmfd....

Czo

Mail Order Service From Central New York's Fastest Growing Supplier Of Communication Equipment Write for information on Ameco Antenna Specialists Collins Drake Electro-Voice E-Z Way H a I lie raffe r s Hammarlund Hy-Gain Mosley National New-Tronics R hn SBE Shure Swan Turner Waters and many other lines too numerous to list. Fill in the coupon now or come in and see us. Dealers We would like to re* ceive your used equipment listing on an exchange basis. Stellar...

The Rockaway Amateur Radio Club

Spring Auction will be held Friday evening. April 14th, at 8 00 P. M. at the American Irish Hail Beach Channel Drive tat Beach 1st St.) Rockaway Beach. Come to the best auction in the New York area. For detailed directions write to P.O. Box 205, Rockaway Park, N Y 11694. GRAND RAPIDS AMATEUR RADIO ASSOCIATION presents their 19th annual Amateur Radio Convention Friday and Saturday, April 21-22. in ihe Civic Auditorium, Pantlind Hotel, Grand Bapids, Michigan. Write G+ R. A. R. A., Box 1333, Grand...

Ent

Po.i oil Bt ass- ATV RESEARCH w Everything you've wanted in a 6-meter transceiver Complete flexibility-bmlMn dual power supply for 115 VAC or 12 VDC. compact size make it ideal for mobile, fixed or field use. Loud and clear reception highly sensitive find selective dual conversion receiver offers great freedom from birdies, tweets and spurious signals. Front end design provides superb signal capture, freedom from cross modulation and overload. High Talk Power Modulation is achieved by an...

The Ratnick Twoer Mark IV

A very simple two meter transmitter for loca contacts The Ratnick Twoer Mark IV is a simple two meter transmitter capable of a good signal with modulation percentage closely approaching 100 . As VHF transmitters go it is easy to duplicate. The circuit is straight forward and little trouble should be encountered as long as good VIIF construction techniques are used. All rf carrying leads should be as short as humanly possible. The rule for bypassing is as follows if you can't see the leads from...

Output

Fig. 2, Component identification is shown here. Because of the small size of the assembly, component leads may be simply bent over and used as indicated, instead of a printed circuit. Fig. 2, Component identification is shown here. Because of the small size of the assembly, component leads may be simply bent over and used as indicated, instead of a printed circuit. I he objective oi our YFO design was small size and simple moan ting. For these reasons, a special housing had to be built because...

Submarine

The words may be different depending upon where you live but the meaning is identical a delightful sandwich lots of goodies tucked into a small space-and always, most for your money. Add the words, SBE COMBO to the best-buy section of the menu whenever you want to sand wich a plump, four-band Kilowatt into that small car and still have room for the family, it's right at home also . First combo layer SB-34, 30-40-20-15 meter transceiver with built in 12V DC and 117V AC supply and replete with...

Ave You Tried Air Mobile

By some strange coincidence, the number of licensed hams roughly equals the number of licensed private and civil pilots. A guess would also suggest that the number of active stations would also approximate number of active civilian aircraft 100, It also holds that there are a number of hamS who are actively interested in flying. What the percentage is, I don't know. At a recent luncheon of fifty hams at the Colt's Neck Inn,, six where active pilots, and at least two make it a regular practice...

Magazine

RADIO NEDERLAND, the Dutch World Broadcasting System, has asked me to notify the American Amateur Radio magazines, that they will conduct a Propagation Course in their En fish language broadcast, starting on the first Thursday in April, 1967, Presently, the transmitters from which this course will be broadcast, can be heard throughout the entire USA, with excellent signal strength daily between the hours of 0130 and 0220 GMT, on a frequency of 9.59 MHz. These transmitters ar located on the...

Quement Electronics

1000 SOUTH BASCOM SAN JOSE, CALIFORNIA Northern California' Molt Complete Ham Store A number of manufacturers make simple vertical antennas with loading coils. These antennas lake little space, work on all bands, and perform well. Here's a home-made version of this type oi vertical antenna that can be made very easily, The drawing tells how to make it. Adjustment is very easy. For eighty meters, set the shorting tap about one-third of the way down the coiL I he feed line should be set a few...

Comdel Speech Processor Model

A prototype of the CSP 11 has proved itself an elective communication aid on the amateur bands over several years. Us prominent feature Is the Instantaneous limiting action without the harmonic distortion which often makes the use of conventional speech clippers marginal, particularly with SSB transmitters. Designed for relatively Insensitive high Z microphones a gain control Is provided the unit will enhance the intelligibility of voice signals considerably under difficult conditions, MIL...

Er Six Meter Transceiver

Interested in 6 meters The Clegg 66 er from Squires-Sanders does an outstanding job and is an ideal rig for the iam who operates on our 50-MHz band. his transceiver contains a stable and sensitive receiver and a 22-watt transmitter in one compact package. It was designed specifically for the six meter band and will cover the amateur frequencies as well as those for MARS, CAP and Civii Defense. In addition, both the 117 Vac and 13 Vdc power supplies are included in the package. The dual...

Ubcarrier Generator for Ham TV

Amateur television, or ATV, is beginning to become quite pupular. The availability of inexpensive vidicon cameras and the many articles appearing in ham magazines about TV have made it possible for the ham who wants something different, but not too difficult or expensive, to try ATV, However, one big problem of ATV'ers has been transmitting audio. One method is to use a completely separate transmitter and receiver system, as for example on two meters. This requires a lot of extra equipment arid...

Transceivers

The new Babcock B-550-SSB is claimed to be the world s most advanced transceiver utilizing techniques that significantly extend the state of the transceiver art. This completely self-contained unit uses the advantages of modular construction and provides high efficiency performance on SSB, CW and AM. With the exception of the 12BY7A driver and 4CX250B final amplifier, all the circuits in the B-500-SSB use transistors or integrated circuits, A total of thirteen integrated circuits are used in...

Hcs

5 pin juiubtj, ceramic wafer, with Lube clips, for 4 l I A, 4-250A. NEW, 1.25 oa4 4 52,60 4 nr 2.60 A 17.50 4 S5.50 All order , except In emercencjF or I'm at a him real, shipped tame day received. For fro OOODIE hen, tend self addressed. stamped envelope PLEASE, PLEASE Include ufficiem for posttge, ans excers returned with crier. I carry private Travelers parcel post Insurance, for domeitic parcel post Fur items too heavy, or too large for parcel post, I suggest l gt u parcel express 1'lease...

Sbe Sb2-la Linear Amplifier

I he compact SBE SB2-LA linear amplifier operates at 1000 watts PEP input on 80 through 20 meters and 750 watts PEP on 15 meters. Although the SB2-LA was designed as a companion unit to the SBE 34 transceiver, it will boost the output of any SSB transceiver up to a full kW PEP. The input circuit of the SB2-LA uses a passive grid input circuit which offers a pure resistive load to the exciter. In the output a pi network provides matching to the transmission line with band switching from the...

Y

Tristao Crank

For the average amateur located on a small city lotT the problem of an adequate low-cost beam antenna system has never been properly solved. Now Henry Radio has exercised its unique experience and buying capacity to break the antenna barrier. Here is a complete antenna program pre-engineered, pre-matched and pre-packaged to suit the average QTH and the average pocket-book. Tristao CZ337 New concept 40 ft. crank up tower 100 ft RG-58U Coax CDR TR-44 Rotator Hornet TB-500-B Three element tri-band...

Please Include Your Zip Code When You Write

Help receirt Mimd-dljiorted i1 euhJ ai o strv amp a ftTTY convener. Cctnpleie whh weued reJav, cable and i amp sirucilom on puiUng thl irnll Into service. Likx now 525,00 ea, RTTY DUAL FREQUENCY SHIFT TONE CONVERTER. Northern Radio type each tone converter It self eon talned Including power suppli, complete with uibev ton-Tefion detailH nd nrtiomatfc. L'sed. irrrod S32.00 Send u your teletype requtrementj.

Fuse Tester

Here's an oldie that we haven't seen around for ten or fifteen years. There are several versions of this little first-day-of-April gadget. Ours calls for a neat little Minibox, a nice big bulls eye pilot light 110 volt variety , a use in its holder, a push button, a spare luse container with spare fuses, and a cord with plug. See the photo. On ours we put the title Little Gem Fuse ester on a plastic label at the top. In the center we put 'If lamp lights, fuse is good '. There is no label on the...

Hv

Dahl Co., Pittr W IM Or m es Tod, 114 gt avco, 41 Onyti il HAmvtiiiUou, liU Dow Trailing, M5 DPZ Curpri lO'i Drake Co., R. L. 25 Editors amp Engineers, 59 Eltc ron fc Conter, U7 E silon Records III Evans Radio, B5 GtneraJ Surplus, 124 G amp G ftruiin Supply. 124 GiJFer Associates. MS Goot heart Co,. ft, E., U5 Gordon Co., Herbert W_. P9 fnitham. 114 Hayden, Er C,. 115 Hiinry Radio, 33 Hunter Sait , ua International Crystal, 3 Jnvertronies, MS jjimes Research, I I JA fi Cryital , IM M c ndclson...

For More I Dx Punch

Cush Craft Monobeoms combine superior electrical and mechanical features with the best quality materials and workmanship. They will provide reliable day to day amateur communications and that extra DX punch, when needed, fo contest work or emergency communications. A28-3 10 Meter, 3 Eiement, Boom 10' A28-4 10 Meter, 4 Element, Boom 18' A21-3 15 Meter, 3 Element, Boom 12' A21-4 15 Meter, 4 Element, Boom 22' A14-2 20 Meter, 2 Element, Boom 10' Al 4-3 20 Meter, 3 Element, Boom 20' 31.95 42.95...

Eico Vfo Stabilization

Galaxy Amateur Radios

Although the modern sideband transceiver is a very complicated piece of equipment, it is not at all difficult to assemble the EICO 753 sideband transceiver kit. This transceiver has both PTT and VOX and the offset tuning allows you to move the receiver up to 10 kHz away from the transmit frequency. The engineering of this transceiver leaves little to be desired, and the step-by-step instructions are clear and easy to follow. At a time when so much amateur equipment is being bought factory...

Bti Lk

BTI LK-2000 is a single tube, grounded grid linear amplifier built to really take it and loafs along at the full legal input This amplifier is offered in two styles the floor model console, or the two-unit table top model with a separate power supply. Either model is convertible into the other with a few available conversion parts. The amplifier tube is the quick-heatiiig Eimac 3-1000Z which has a full 1000 watts plate dissipation and replacement cost of only seventy-eight dollars. More than...

Th Edition

Most comprehensive how-to-build-it source Problem-solver for designers amp builders Completely revised and enlarged by William I. Orr, W6SA1. This is the comprehensive communications manual which is the industry standard ror electronics engineers, technicans, and advanced radio amateurs Explains in authoritative detail how to design and build all types of radio communications equipment.

Arrow Specials For April

RI9 ARC 2 meter tunable receiver. 118-148 mc. R13 ARC Tunable VHF receiver. 108-135 mc. RIO ARC Tunable broadcast receiver. 550-1 500 kc. 24.50 new. 19.95 used. IP274 ALA Panoramic indicator complete with I 8 tubes i T , y - _________ .-. j 7.50. 2534 . MICHIGAN AVENUE CHICAGO, ILLINOIS 60616 C 1763 A R N21A TACAN Transceiver Control Box____EX 9.00 TN'2B APR9 Timing UniL 1000-2wi0mc. W Tube EX 32.50 TNI30 APR - Tunlm Unit 4300-7 r gt 0mc W Tubes-.EX 32.50 ID22oA APR9 Panoramic Indicator W...

Sb-34 Transceiver

Picture Radio Swan 400

The SB-34 transceiver is a complete fout-band transceiver for 80, 40, 20 and 15 meters, with built-in power supplies for both 115 volts AC and 12 volts DC, The SB-34 is almost completely transistorized with 23 transistors and 20 diodes the only vacuum tubes used are in the final power amplifier and driver stages. In addition to the built-in power supplies, all the necessary inter-connecting cables are provided with each unit. Since a front panel mounted speaker is included, only a suitable...