M

Instant Credit, Instant Shipment On Time Payments & Cash Orders Trigger Electronics is as near as your phone Trigger for the most complete inventory of amateur and CB equipment. Everything in stock for your convenience Trigger has cut the red tape of time-consuming credit delays. Just pick up the phone and cat us (no collect calls, please) and your goodies will be on their way usually the same day No company processes foreign order and inquiries with greater dispatch than Trigger 7361 North...

State

About splattering and misadjusted SSB transmitters, but in many cases the trouble lies right in the complainer s own receiver. If lie would put an attenuation pad in the transmission line so the front end wasn't overloaded, the spurious splatter signals would miraculously disappear. Since single sideband is so much more efficient than AM, a little bit goes a long way, and when conditions are good, receiver overload can be a problem. So, before you accuse another operator of splattering or broad...

Navy Tcs Receiver Am

1.5 MC to 12 MC In two (2) Variable frcq, oscillator & cryital control on four (4) pteset channel in the entire freg. range. Audio output 1.5 waits Into 500 ohm load uses tubes I2SK7 BF A., 12SA7 converter, 12SK7 IP A.h 2SQ7 detector HFOt I2A6 oscillator. IliAH audio Amp. 456 KC IK Freq, Large vernier & spin dial, audio cain, AVC. BFO and all control a on the front paneL Yolt es required 12 VDC ft 220 VDC IOO MA. Size 11 11*1 AA 95 WL *7 lbs USED Checked for Operation 10.00 extra. 1,6 MC...

Info

Notes Oscillator injection at VI, V2 is 6V p-p maximum signal at V4 grids to be set at 8V p-p with Rt audio at V9br VlOb qrids 100 mV p-p adjust R2 for I volt dc on oscillator grid set AVC depth control for 8-10 volts p-o at V4 Qrids with external BFO on and detuned I kHz. Notes Oscillator injection at VI, V2 is 6V p-p maximum signal at V4 grids to be set at 8V p-p with Rt audio at V9br VlOb qrids 100 mV p-p adjust R2 for I volt dc on oscillator grid set AVC depth control for 8-10 volts p-o at...

Hayward Street

Nical advantages of SSB or the dedication of any individual SSBer. Maximum utilization of the bands available can and will include the use of AM. Is the SSB equipment so jtoorly made and designed that it can not reject the carrier If so, then there is a drastic need for improving fhe SSB equipment and not for forcing or outlawing the AMer off the air, As far as AM transmitters being ineffective1 I don't think so. . . . Any hiph level plate modulated AM transmitter can come within a few dB of a...

To Rcvr Avc Line

I Block diagram of the synchronous detector The audio phase detector delivers a dc voltage only when the I and signals have jh-phase synchronous components. Since the I and Q audio will be in phase quadrature in any case, where the like sidebands do not exist on each side of the carrier the phase detector provides no AFC voltage for SSB, static, or CW signals, and is therefore totally unaffected by this type of interference. If the CT and Q audio outputs are taken through alpha and beta...

Am

Designing high-current rf filament chokes for grounded-grid amplifiers. The grounded-grid amplifier is proving very popular with the ham fraternity for the amplification of SSB signals. An amplifier of this type is characterized by a comparatively lou input impedance and relatively high driving power. Most SSH exciters in use today meet these requirements with ease, generally having a 50-ohm output at 100 watts or more. A disadvantage of the grounded-grid circuit is that the filament must be...

Evaluating Antenna Feed Systems with Time Domain Refectometry

Although you are not apt to find a time domain reflectome-try system in the average ham shack, it is extremely useful and informative as W7QAG shows here Transmission line impedance measurements made with a standing wave bridge, direction a coupler, or similar device, yields information on the cumulative effect that the various components in the feed system have on the impedance of the point being measured. Only with a knowledge of the characteristics ot all parts of the system can the effects...

Leading Book On Tranitorized Communications Equipment

Earnshawf ZLI A AX. Covers a wide range of communication uses for both amateur and commercial applications. Includes audio and speech amplifiers VHF transmitting and receiving equipment, SSB exciters, and complete SSB transceivers. 180 pages. Order EE-044 f only 5.00 Order from your electronic parts distributor or send coupon below P.O. Box 63003, New Augusta, tnd., Dept. 73E-9 No. EE-167 No. EE-044 -encl. Sam Kelly W6JTT 12811 Owen Street Garden Grove,...

You

It tells how to go about getting the key to job success in the growing electronics boom-a Government FCC License ihere's a big boom in electronics. And YOU can be part of it. You don't need a college education or any previous experience in electronics. The free book shown here tells you how. In the last 15 years, the electronics manufacturing Industry aione has grown from 2.7 billion to 17 billion, and is expected to hit 24 biliion by 1970. Thousands of trained men are urgently needed to help...

Coil I

Filament Bifilar Rfc

Fig. 2, Section of a bifilar wound coll. Note that the turns are wound parallel to each other around fhe form. Fig. 2, Section of a bifilar wound coll. Note that the turns are wound parallel to each other around fhe form. A check of the rf choke should be made to assure that no series-resonance points occur at the desired operating frequencies. It will be remembered that in a series-resonance circuit the inductive reactance and the tapacitive reactance cancel, and the only impedance in the...

X

Filament Bifilar Rfc

The first requirement is to produce a coil having an inductance of 11.3 microhenries. Before proceeding with winding the choke, it is necessary to determine the required wire size. This is based ou the filament current. As an example, consider the 3-1000 tube that requires 7.5 volts at 21 amperes It can be seen that if 21 amperes flows through any appreciable resistance, considerable voltage loss will occur. In this case for example, one tenth of an ohm resistance will result in a voltage drop...

Ameco Equipment Corp

A SUBSIDIARY OF AEROTRON, INC. - P. 0. BOX 6527 RALEIGH, N. C. 27608 Then there is the question of how a 58 foot power boat was able to go for almost 4000 miles without refueling, from Cayenne to the Rocks and back. Two problems have cropped up with this one. First there is the matter of the lack of authorization to land on Heard and then there is a bit of doubt in my mind as to where Don actually was during this expedition. You see, I have it second hand, but from a good source, that Don was...

Dual Band Use of Single Band Beams

W2EEY describes several ways the driven element of a single-band beam can be used on a higher frequency band without affectinq beam performance on the band for which the beam is designed. With the number of sunspots rapidly growing, many amateurs want to be able to use their present antennas on a higher band. Particularly, those with a 20-meter beam with a center-fed driven element might desire to have a radiator available on 15 or It meters and those with a 15-meter beam to have a 10 meter...

Vujm

Phe next morning my hotel phone started ringing early and by 9 I had a morning planned with Raju, lunch with Minoo Patel VU2JM and dinner with Rai, Raju and I went shopping. I bought some spotted mink gloves for 2.50 a pair . , . and leopard gloves were 5. Tilings were so low priced that it was difficult to hold back. Minoo picked me up for lunch in his Mercedes ISO. We ate at the Imperial Hotel, very impressive, and then on to his office for a cup of tea and a little business. Minoo is a...

American Crystal Co Po Box Kansas City Mo

YES You can mote BIG MONEY by callinq us collect today if you have any of the foltowinq equipment. We urgently need and must buy TED Radio Transmilters, RT 67 and RT-68 GRC Transceivers, PM09 GR Power Supply, R-II0 GRC Recvr., C-433 and C-434 GRC Controls. AN URR-l3 and -35 Radio Recvrs., AN ARC 27, -34, -52 Transceivers, PLUS any hi quality military or commercial TEST EQUIPMENT. We pay the most fastest with a smile CALL 4385 West Pico BlvcL Los Angeles, Calif. 90019 EICO 753 transceiver. 5150,...

Micro Ammeter S

I just finished reading your View From Here in the June issue of CQ i Sic I Here is my view from Southern California. 1 think you have expressed your personal opinion without wiving much thought to the other side of the page. I retired about 8 years ago at the age of 70, and for the next four years I spent the most lonely anil purposeless life imaginable. Then a Nephew suggested that perhaps amateur radio would be interesting. He gave me an ARC-2 tranceiver and some ARRL books, and after months...

Wbpd

Delivers uncompromised full-sized performance on 10, 15 amp 20 meters Exclusive time-proven Beta Match Try as you mayt you just won't find another three-element tribander for 10, 15 and 20 meters that will even begin to compare with Hy-Gain's Model TH3Mk2, Some say it's the individually tuned, large diameter Hy-Q traps that make the difference by providing fulf-sized performance on each band. Others say it's the spacing of the elements on the 14 foot boom. Still others claim it's the ex...

Canada

Ottawa, Canada If you live outside of a distributor-area order directly from the factory. Send for our new Amateur Radio Catalog. imam Nagte W3DUQ 21 Powell Lane West Ches er, Pennsylvania imam Nagte W3DUQ 21 Powell Lane West Ches er, Pennsylvania If you want to get the most out of AM or DSB communications, try the synchronous detector W th a synchronous detector at both ends of an M communications link, the system is as effective as single sideband. Synchronous...

Sunday Telephone Service Am Pm

7361 NORTH AVE, RIVER FOREST, ILLINOIS 60305 it Pric 2 per 25 words for noncommercial ads 5 per 25 words for business ventures. No display ads or agency discount. Include your check with order. it Type copy Phrase and punctuate exactly as you wish it to appear. No all lt -capitaf ads. We wiN be the judge of suitability of ads. Our responsibility for errors extends only to printing a correct ad in a later Issue, TEKTRONIX 511AD 10-MHz scope. Clean with book Usually 5200 or more from dealers,...

Distributors

These select, full service outlets are the only authorized distributors of Waters Amatuer Radio Products. AMRAD SUPPLY, Inc. San Francisco, 1 Calif. 94121 AMATEUR ELECTRONIC SUPPLY Milwaukee, Wisconsin 5321B ARROW ELECTRONICS, Inc. Farm ngdale, U, New York 11735 HARRISON RADIO CORPORATION New Yoric, New York 10007 STERLING ELECTRONIC SUPPLY New Orleans, Louisiana 70112 ELECTRONIC DISTRIBUTORS, Inc. Wheaton, Maryland 20902 ELECTRONIC CENTER, he. Dallas, Texas 75204 WORLD RADIO LABS, fnc. Council...