Z

SO OA lOOMMF H WMA LUND TVPE M4PC6 vpnnettionb for coil *ound opposite direct i to make an oscillator and can be done in more ways thajj one. If you wind Ln in the same direction, that is clock-wise, or counter-clockwise, as L2 is wound, use the opposite end from the plate to get the out of phase energy. See Fig. 2. If you wind it in the opposite direction from the plate coil L2, use the same end to get the out of phase energy, See Fig. 3. There's a real fancy deal going on here in fundamental...

Atlantic Surplus Sales

Y. 11231 PHONE 212-855-7607 jflr Pack Monadnock Mountain (2310 feet) for a 48 mile otal path. W1QKA says that the signals were about 30 lb above the noise using modified APG-5rs (2C43 oscil-ator) into four foot dishes at both ends. Both also used uperhets with 1N21F mixers, 6CW4 cascade if preamps, nodified A JG-5 local oscillators, four stage 6AK5 if .mplifiers and threshold detectors a la K1 JIX, Don't forget to send in your reports on interesting ctivities,...

Output

Bias amplitude ' can represent current in the case of the conducting (ON) forward biased diode or voltage in the case of the non-conducting (OFF) reverse biased diode. In graph B the fixed dc bias exceeds the peak values of the ac signal and as a result, the bias polarity never changes. Thus when the diode switch is on, the ac signal is passed without being rectified when the switch is off, no ac signal appears across the load. By now the reader has hopefully studied Fig, 4 and Fig, 5 and...

VHF

Last month I said that we would look at circular polarized antennas this month. Unfortunately, a heavy work load and never-ending weekend rains have prevented raising the antennas. Will try again next month. From my participation in the ARRL June VHF contest, it seems that six meters was open for all areas of the country, far different from last year, There should be some excellent scores. Troposphenc conditions are finally starting to come around in the midwest. The large stationary front...

Klti

Tenna-Rotor stands up under severe conditions, Tests prove it is the strongest, most durable antenna rotator available for amateur use on all antennas up to 25 sq. feet in cross section, including six element 10-15-20 Tri-bander antennas. This latest Alliance Tenns-Rotor will turn heavy antennas and is designed to withstand wind velocities to 90 m.pJi- in accordance with E. L A, wind loading standards. The patented rigid offset design distributes the toad resulting in superior strength to...

Antenna

Reflective Antennas Corner Reflector Trough The VHF Antenna Handbook is your complete guide to VHF end UHF antennas. This outstanding book is by Jim Kyle K5JKX, one of the outstanding technical authors in the electronics field. The VHF Antenna Handbook covers complete theory and all practical details for every type of VHF and UHF antennas. A special feature is the commercial antenna catalog section. If you're interested in VHF, you should have this book. The simplest means of tuning in a RTTY...

Sprpgue

TYPE SK-1 SUPPRESSIKIT FOR VEHICLES WITH D C GENERATORS GET YOUR SUPPRESSIKIT FROM A SPRAGUE DISTRIBUTOR TODAY Designed for simple but effective installation. The generator capacitor is built for continuous heavy duty 257 F 125 C operation, A full 60 ampere current rating plus ttie high rated operating temperature provide an extra factor of safety against expensive generator burnouts, unlike many suppression assemblies containing general-purpose capacitors. Effectively suppresses RFI through...

Prices

Mast 370-1 12.95 Coil im Radiator Tip 370-2 9.95 Coil PfMHi Coil 370-75 15.95 Coil rnmSmm Coil 370-40 14.95 Coil 370-10 11.95 CODAX new rhythm-smooth automatic keyer by Waters never anything like it I Feather-touch double paddle 1b factory-adjusted for precise gap and tension. Spacing and timing from 5 to 50 WPM is fully automatic. Battery powered all-iolid state digital circuitry with sealed Reed Ilelay output for block grid keying. Also operates into mike Jack to work VOX CW on upper or lower...

Calibrating A

Ures 5 ohms, and reads 200 milliamperes at full scale. Want it to read 400 mils at FS Put a 5 ohm resistor across it, and presto, half the current through the resistor, half through the meter, 400 mils full scale. This is as simple as calculating the value of two resistors in parallel, and we won't go into it. Apply this basic principle to extending the range of existing current meters, which are in the ball park area. Sometimes the only meter we can get is something which reads 50 microamperes...

Test Equipment Handbook

Every ham needs to have and know how to use test equipment. This book tells you how to make valuable ham test gear easily and cheaply. It also covers the use of test equipment, SOc When the SBE 33 came out, 1 knew that it was the ideal transceiver for me. i was looking for a rig that would be convenient for use on a cabin cruiser. Boat mobile is a bit different than car mobile. The boat is not usually kept at iiome. Once you get on it you stay at least for the weekend. This means that...

Pbv

MAKE YOURS A REAL SIGNAL . use a CUSH CRAFT ANTENNA Whether you are Tracking Satellites, Moon Bouncing, DX-ing, Rag Chewing or Winning Contests you will do it better, more efficiency, and at a lower cost with a Cush Craft Antenna. You will have a signal that really radiates when you buy Cush Craft . the antennas with a ' PATTERN OF FIRSTS'' in Amateur Communications,

Transistron Transistor Bonanza

An exceptional assortment of Transistron factory marked material. Most of these self for over 6.00 each. Your choice of the following at only 75c each or 7.50 the dozen. Fully marked with 2N numbers, long leads. All listed are 2N numbers, we left off the 2N to save space, 339 - 340 - 341 - 342 - 343 - 497 498 - 547 - 549 - 550 - 551 - 552 - 706 - 728 - 729 - 735 -736 - 740 - 754 - 755 - 839 - 840 - 841 - 842 - 843 - 844 - 845 - 1055 - 1116 1140 1206 - 1207 - 2040 - 2041 - 2427 Meshna's new...

Communication Components Company

O. 13ox 8721 Orlando, Florida Type copy on standord size paper. Phrase and punctuate exactly as you wish it to appear. No all-capita ads. Include your signature with order. We can only accept ads related to ham radio. We will be the judge of suitability of ads. Our responsibility for errors extends only to printing a correct ad in a later issue. TOOOOOBES, TRANSM ITT IN G-S FECIAL PURPOSE, New, Boxed, Guaranteed____6CW4 1.40, 146B 4.75, 417A 3.95, 826 6,90 Free Catalog____Vanbar Dist. Box...

Info

6cz5 Transmitter

Attery drain and power supply requirements. Lnd, as has been borne out by all who have uilt this transmitter, it will out-perform ome-brew and commercial units with 2 or 3 rries the power The unit we built contains 3-position ciystal switch and socket in addi-011 to a crystal socket mounted on the front anel, In this way we could seal in two net equency crystals with the third position iving us an additional crystal frequency from le front panel, or, as in our home station, roviding us with an...

Write Now For Monthly Flyer

Ft Johnson Tube Sockets 122-101100, Aluminum Shell with 3 8 vent, holes submounts tube 1 below Chassis, takes 5894, 829B, 32A etc. 1.80 value Type 22-247-100 top mount 7 pin steatite, same tubes Transmitting Cops CRL 851, 25 mmf, 15 KV New Clear Plexiglass Strips 9 x 2 i x 1 16 2 speakers, large magnet, used as microphone and speaker in Hallicrafters CB-4 New Plate Current Meter 0-200 used in Hallicrafters HA-2. Keep a spare New S J Meter used in Hatlicrafters SX-115 Sarkes Tar ion...

Receivers

Collins 51J4 Collins 75A2 Collins 75A3 Collins 75S3 Drake 2A .. Drake 2B . . Elmac PMR-6A Elmac PMR-8 Gonset G66 Hammarlund HQ170AC Hammarlund HQ180AC like new National NC-303 w calib. . RME 4350A ................ 695 00 179.00 225.00 499.00 169.00 199.00 29.00 59.00 49,00 59.00 149.00 169.00 159.00 125.00 175.00 195.00 249.00 350.00 325.00 125.00 199.00 69.00 169 00 225 00 99.00