Newtronics Corporation

3455 Vega Ave,, Cleveland, Ohio 44113 After spending countless hours measuring the mounting centers required for the various components involved in laving out a printed circuit board, I decided to do something about it, I found a scrap of aluminum rack panel in my junkbox and converted it into a handy template. The plate 1 used was 3b thick and measured 3 by 9. On this area 1 laid out the mounting centers for 1 and 2 watt resistors single and dual low voltage electrolytic*, disc ceramics...

Triband Quad

Model MCQ-3B for 10, 15 & 20 meters Designed and Engineered for Superior DX, the new MCQ'S (Mosley Cubical Quads) are rated to 1 KW AM and 2 KW P.E.P, SSB. Maximum Front-to-Back and Forward Gain. A Single 52 ohm Line feeds the Quads via a Gamma Match resulting in a low SWR over the full bandwidth. The Square Configuration of the MCQ Series guarantees better performance by providing optimum electrical efficiency. The Durable, Lightweight, Weatherproof Aluminum Construe tion yields a lifetime...

Wacqn

6 Computer Card Transmitter 12 Crystal Fitters The heart of SSB 6 Trouble Shooting Solid State 20 IC Frequency Counter Easy to build counter for ham applications 28 C,Vt Transformers for Ham Applications _____________________ Keepinq the voltage constant in the shack 32 A Space Communications Odyssey It isn t qoinq to be easy to keep in touch 36 Surprize in the Sides 42 Using Thin Wire Antennas 50 A 7 MHi Transistor Transmitter 54 Double Conversion of the BC348M 58 The Gentrac 66 Harness your...

Carry

The block diagram of the standard time base generator. by Robert M. Brown, K2ZSQ W9HBF. A completely updated handbook packed with data on vital vhf subjects not available elsewhere. The author formerly published the famous VHF Magazine whose back issues are much in demand. This new handbook incorporates the finest vhf material updated from the former publication, 160 pages. Order EE-65060, only 4-50 by Robert M. Brown, K2ZSQ W9HBF, and Tom Kneitel, K2AES. Fully explains the new...

Info

Keep one in the car gt one in the workshop and one in the shack. Plus maybe a HAMMOND WORLD GLOBE 18 DIAMETER Costs 17, Free with 5 sabs or 12 with 1 sub. Wonderful globe for DXing as long as you don't use any pins. Costs 17, Free with 5 sabs or 12 with 1 sub. Wonderful globe for DXing as long as you don't use any pins. Free with 7 safes or 15 with 2 subs. VOMt rf-af generators r amp c substitution, etc. Incredibly handy. sub. Handy around house, foot-bally...

Wbibs

_ - . .-v - ' .J Two or more emblems at Illinois residents add 5 tax, the same time 4.00 each. Rush Order To RADIO AMATEUR CALLBOOK, Inc. 4844 Fullerfon Ave., Chicago, Illinois 60639 William A. Col Iyer WA9CQN Applications Engineer So a Electric Division Sofa Basic Industries countered problems caused by power line voltage fluctuations, and most of us have simply assumed that line variations are something with which we have to live, I in nearly all private homes today arc literally scores of...

Receivers

Wes Vo pka Wim BS Consumer Applications Faire hild Semiconductor 313 FairchiJd rive Mountain Views Ca- 94041 A simplified frequency counter that can be used in checking the drift ot a variable frequency oscillator can be easily built at a minimum of cost thanks to the large availability of low-cost integrated circuits. The simplicity of design using the integrated circuit binary system uses no transformers with their associated turns ratio and impedance ratio to worry about or wind there is no...

Ht Hytower

Twenty and 75 meter frequency translation relationships to 5 MHz vfo Fig. 3. Twenty and 75 meter frequency translation relationships to 5 MHz vfo used In the switched carrier technique. See Fig. 1. Pure SSB filters are most selective on only one skirt. In this case, discrete cutoff frequencies and their relative attenuations are usually specified. 3 Ultimate attenuation. The amount of attenuation given to signals appearing out. side the selective skirt of the filter is normally referred...

Wbte Noise

Antique Electric Circuit Diagram

L The schematic oi the generator Generator section com ponent board layout, b tWHft w.- HE .' Generator section com ponent board layout, output is adjustable with the same panel control. Voltage supply for the noise diode is stabilized by a 6V Zener diode Dl , so that noise output is unaffected by normal battery variation, and permits control setting to be used as a direct reference when making relative noise measurements. This elemuia-tes the need for the usual diode current meter for...

Magazine Peterborough New Hampshire

The carrier at 913 kHz, the upper sideband at 916 kHz, and lower sideband at 914 kHz. These signals are heterodyned with the second conversion oscillator in the second mixer stage, The second conversion oscillator is crvstal controlled at 1000 kHz and 830 kHz. The selection of one of them is done by switch S-4, As the second if is tuned to 86 kHz, the 830 kHz oscillator would give upper sideband 916 kHz of first if and the 1000 kHz oscillator would give lower sideband 914 kHz of the first if ....

Wajnd

George VU2TV 3205 Sector 27D Chandigarh India Hams in most of the world are lucky enough to be able to select their receiver from a vast variety of factory-made equipment, but in places like India, where there are relatively few amateurs, it is difficult to obtain even surplus communications equipment As a result, you aren't apt to find many Indian hams with modern equipment. The only choice left is to make the most o the surplus equipment that is available. Most of the surplus receivers...

Swan Mark Ii Linear Amplifier

Two Eimac 3-500Z Triodes provide the legal power input 2000 Watts P,E.P. in SSB mode or 1000 Watts AM or CW input. Planetary vernier drives on both plate and loading controls provide precise and velvet smooth tuning of the amplifier. Greatly reduced blower noise is provided by a low RPM, high volume fan. Provides fult frequency coverage of the amateur bands from 10 through 80 meters and may be driven by any transceiver or exciter having between 100 and 300 watts output

Switch

Should be a square wave with a free running frequency of about 150 kHz, This can be checked on the station receiver. The next step is to put the crystal back in the circuit and adjust the trimmer to zero beat with W.W.V, when slightly coupled to the antenna. A L 914 should be used as a buffer amplifier to prevent loading of the oscillator as shown in Fig. 13, There are several alternatives to consider in place of the L 958 decade dividers if one is not limited by space requirements. One...

For Closed Circuit Or Amateur Tv

THE VANGUARD 501 is a completely automatic closed circuit television camera capable of transmitting sharp, clear, live pictures to one or more TV sets of your choice via a low-cost antenna cable RG-59U up to a distance of 1000 ft, without the need for accessories or modifications on the TV sets. The range can be extended indefinitely by using fine amplifiers at repeated intervals or by using radio transmitters where regulations permit There are hundreds of practical uses in business, home,...