Gus Part

The operation in Monaco was a success and everyone knew I was on my way. Even had a FB QSO with Harvey Brain VQ9HB to let him know I was on my way to the Seychelles and to have the man who owned the boat have it all shipshape to depart when 1 arrived there. I made a few stops along the way between Monaco and Bombay, Met some of my old friends in Cairo, Beirut, Aden, a few others. Finally arriving in Bombay a few days before the S.S, Kampala was to depart for VQ9 land. The usual way to get to...

A

Output circuit of the parametric transistor multiplier, n A, the resononce is a 48 MHz, in B, at 96 MHz, and in C, at 144 MHz. IN-BANDWIDTH PRODUCT f 7 jMHtJ iOQ New, compact, high performance solid-state receiver for amateur applications tion notch filter extremely effechvc noise - Complete ham-band coverage B0-1 meters and portion of 6 meters Standard-equip ment 9+5 10+S Mc band provides WWV and 31 meter 5WL band* Three position selectivity lor optimum fidelity and QRM rejection *...

Universal Hybrid Coupler Ii Phone Patch

The ultimate in phone patches providing effortless positive VOX operation . . . and it also connects tape recorder for both IN and OUT. Built-in Waters Compreamp increases low telephone line signals while simultaneously preventing overmodulation. Cornpre-amp also operates alone (without patch) with station mike. Model 3002

Info

All coaxial cables consist of the same basic elements a center conductor, a dielectric and an outer conductor followed by a waterproof jacket. Where extreme environments may be encountered, an outside armor or lead sheath may be used. Coaxial cables are available in three main configurations braided flexible cable, semi flexible cable and rigid line. The braided cable consists of a solid or stranded inner conductor, solid dielectric, braided outer conductor and a protective plastic outer...

Laboratory

A Field-Effect Transistor Offer for Experimenters Only This highly sensitive FET voltmeter can have the entire circuit mounted on the meter terminals Crystal oscillators are a natural for the high-Z FET. This one is for 10 mc 11 II AT 10 A lETQ l s the true semiconductor equivalent of a pentode tube The FET VI lift I III H III has a high input impedance only an input voltage is needed to control output With FETs you have zero warm-up time and long life (no filaments), low power consumption, and...

Metro Electronics

Now at 4. Transistors are prone to overloading at intennodulation. So are tubes if they're n handled properly. Transistor circuits can gi1 excellent results if designed properly. Als note that the darling of the ARRL these da is the 7360 tube, which they use as a mixer avoid the overload and cross modulation fro more conventional tubes. It costs aboi 3.75, roughly the same as an FET that 5. Transistors are compact, but this isu too important since equipment...

Simple Two Element

What is a Weeping Willow Just a vagi with bent elements, making it half as wide as it would normally be. Will il work Well, the first time I put it oil the air I got a new country, Ireland, 5X9 on 15 meters. Another Irish ham called me when I finished with the first, a situation to wMch I am not accustomed he gave me 5X9, too . This was early in the morning, when the East dominates 15. Listening to a WB6, I found that his signal dropped about 3 S units off the side and nearly 4 units off the...

Prn

Substituting Equation 4 into Equation 5 we have By inspection of Equation 6 it is seen that the peak unmodulated PJ power m 0 is Fig, 5. Carrier with sine wave amplitude modula tion. Fig, 5. Carrier with sine wave amplitude modula tion. and with modulation, the peak modulated power Pm is Note, from Equation S, that for a 10036 modulated carrier m 1 that the peak modulated power is four times the unmodulated power Thus, most of the power of an AM transmitter is contained within audio sidebands...

Go To Frame

Your answer, 1600 kc, is incorrect. This is the first IF derived by taking the difference between the local oscillator and the incoming signal in the mixer. 8.6 7 - T.6 mc _ 1600 kc Now determine the second IF the same way using T600 kc as the input to the second mixer, then return to frame 1 and select the correct answer. Fig. 2, Another form of programmed text. money to have it fixed, and you may even get the urge to build that gadget you want-the one that's not made commercially. AH...

Fair Radio Sales

Box 1105 LIMA, OHIO 45802 ONSET SIDEWINDER 6 Meter Transceiver with AC and DC supplies, 350.00 or trade for WAttWP, Vic Matt era 1200 South Hough Street, Harrington, I1L 0016. QSL Hi BilER STAMP 3 x 5. Fre lt sample im pi ess ions and blank, complete stamp iii.OO P. P. Df Other ham stamps 1,00 up, W 's Shop W1FI KFD I, Ameabury, Mass 01913 ALL MAKES of new and used amateur equipment. Write or call Hob Grimes, 89 Aspen Road, Swamp amp cott, Mass. Tel 6rM59 amp 470Q or 617-G98-2530. JULY...

American Crystal Cc Po Box Gb Kansas City Mo

Size, weight, reliability, ruggedness, power drain, ease of circuit construction, and in many cases, simplicity, performance and cost. Vet the 1966 ARRL Handbook gives semiconductors, except for silicon diodes, very short shrift. There is a short chapter mi semiconductors in general, hen the receiving ehaptci mentions and illustrates a transistor mixer for below 20 MHz with a very old transistor, a simple if system with older transistors and two rf amplifiers. This 58 page chapter on receiving...

Reg

MtXER CATHODE IOO MA FULL-SC ALE JO FINAL CATHODE 250MA FULLSCALE O Ftg. 3. Low power 6DQ5 amplifier for those who don't want or need a full kilowatt. The unmarked loading capacitor is 500 pf. 1 lie amplifier section is a straightforward class AB1 linear employing a pair of 4CX250R tubes. The output is a pi-net using a modern vacuum variable, an ancient roller coil, and a standard variable capacitor. The final toiic'i was the addition of an SWR bridge. his is placed in the circuit such that it...

Voltmeter

Inside of the PtT voltmeter showing inc eJcneu circuit oooru mou iLM on the meter terminals. The ceran.tc switches are recommended for low leakage since the input impedance is 22,000,000 ohms. Inside of the PtT voltmeter showing inc eJcneu circuit oooru mou iLM on the meter terminals. The ceran.tc switches are recommended for low leakage since the input impedance is 22,000,000 ohms. megohms. All this of course means that the FET voltmeter gives a truer reading because it loads the circuit under...

Wfaz

This article based on an item in Soviet Journal. RADIO, No- 9. I960, page 44, entitled Five-band Vertical Antenna ' by Y. Myedlnyets UB5UG . great how-to-builddata in the famous Tells how to design, build, and operate the latest types of amateur transmitters, receivers, transceivers, and amplifiers. Provides extensive, simplified theory on practically every phase of radio. Broadest coverage all original data, up-to-date, complete. 816 pages. Order No. 166, only 9.50

Only

ELECTROLYTICS C D SPRAGUE MALLORY 10 mfd 250 VDC 10 10 mfd 450 VDC 50 50 mfd 100 VDC 8 mfd 450 VDC 30 10 mfd 300 VDC 10 mfd 250 VDC 20 mfd 450 VDC 150 mfd 150 VDC 3 x 10 mfd 450 VDC 50 10 i 0, 60 mfd 350 350 350 25 VDC 2 x 45 mfd 350 VDC 30 30 10 mfd 300 VDC 35 35 mfd 450 VDC 30 mfd 450 VDC 80 80 mfd 350 VDC 16 16 mfd 450 VDC 20 10 0 mtc 300 1 50 1 50 50 VDC 125 mfd 450 VDC 150 mfd 250 ' VDC MIX THEM OR MATCH THEM ALL lt amp ,30 eoch or 4 1.00 R C Duel 150 mmf Variable Capacitor only 1-85 RELAY...

Into Amateur And Cb Equipment

Here is a wealth of conversion data in 3 volumes includes photos, diagrams, instructions. Vol. X, Covers BC 221, BC 342, BC 312, BC-348, BC-412f BC-645, BC-946, SCR-274 8C-453A amp BC 457A series , SCR-522, TBY, PE-103A, BC-I068A 161A, etc. Order No- 311, Vol. 2. Covers BC 454, AN APS-13, BC-457, ARC-5, G0-9 TBW, BC-357, 8C-946B, BC 375, LM,TA-12B, AN ART-13, AVT-112A, AM-26 AIC, ARB, etc.Order No- 322, Vol- 3- Covers APN-1, APN-4, ARC 4 ARC-5, ART-13, BC-191, 312. 342, 348, 375, 442, 453, 455,...

Nba

ISKHj r QTCH FILTERS ANrmrto TUNER Fig. 4 18 to 20 kHz notch filter and antenna tuner for high and low impedance receiver inputs The coils are Miller 6315. the frequencies ol these stations so that they vary no more than 1 p 1010 per day about a nominal frequency known to a few parts in 10. The basis of accurate frequency is a stable time reference. Frequency and unit of time are inseparable. One may be defined in terms of the other. For more than a century the Naval Observatory has been the...

Order

Squires Sanders Inc

AREA CODE 806- POrteh 2-8759- 1320 19TH ST LUBBOCK. TEXAS 79401 Ed Marriner W6BLZ 528 Colima Street Lo Jalla, California The local radio parts store, and metal supply have enough simple parts to build a good sideswiper for electronic keys. This idea is better than it makeshift key using a hacksaw blade or tearing up a regular telegraph key. All of the parts for the key are mounted on a lead base to keep the key solid on the operating table. Lead is also easy to drill and tap, Ed has been...

Davco

Bottom view of the 48 to 1 44 MHz tripler in 7. Bottom view of the 48 to 1 44 MHz tripler in 7. sketching. The waveform of the above unit is shown in Fig. fi as it was sketched, from storage scope face. Three cycles of 144 MHz RF are displayed so that I he amount of 4S MHz present can be observed. The fact that a rather special scope was used for making Fig, i does not mean that it was essential, but its use only confirmed our other measurer ments. The grid dip meter was the only necessary...

Semiconductors

J 85 WATT 2N43A PLANA , silicon, TO-53 npn TO 2-6Amp RECT'i, studs, silicon, G fi 400V . 1 IGNITION SWITCHING 7 KAN5I5TORSJ 0 AMP j 4 2N336 NPN SILICON Irnnrifttprs. Triuts ustron 10 ZENERS REFERENCES lut r Or 2N998 TYPE, 1000 GA N. npn silicon. planar . . 10 MlCftODlODE 5TAB1STORS. oiiy, silicon 6 TRANSITRON TRANS'TRS, I2N34 1, no testen 2 Bidirectional t ran si s tor 2N1 amp .4I 4 2N170 TRANSISTORS, by iK., npn for ten'I rf 6 TRANSISTOR RADIO SET, O -ifs. ririver-pp . 75 GERMANIUM amp...

Sells More Amateur Ssb Transswan And Henry Radio

IS THE FASTEST SELLING TRANSCEIVER IN THE WORLD THE SWAN 350, ALWAYS IN STOCK AT HENRY RADIO AND READY FOR SHIPMENT ANYPLACE IN THE WORLD. DO SWAN AND HENRY RADIO DOMINATE THE TRANSCEIVER FIELD BECAUSE SWAN MANUFACTURES A FINE RELIABLE TRANSCEIVER THAT GIVES YOU THE MOST FOR YOUR MONEY. BECAUSE HENRY RADIO GIVES YOU THE BEST DEAL . . . GENEROUS TRADES, EASY PAYMENTS, THE KIND OF RESPONSIBLE MERCHANDISING THAT AMAT EURS ALL OVER THE WORLD HAVE LEARNED TO DEPEND ON. 117-XC AC SUPPLY 85.00 114-117...

Buys Surplus

FULL OF TOP QUALITY ITEMS - Transmitters, Receivers, Power Supplies, Inverters, Microphones, Fibers, Meiers, Coble, Keyers, Phones, Antennas, Chokes, Dynnmotors, Elopers, Switches, Test Equipment Headsets, Amplifiers, Indicators, Handsels, Converters, Control Boxes, etc,, etc. SEND stamps or coin for CATALOG and receive CREDIT on if Price 52 per 25 words for non-commercial ads 5 per 25 words for business ventures. No display ads or agency discount. Include your check with order, if Type copy....

John Meshna Jr

We keep no mailing lists. Send 25 for the best 80 page cat alog we have ever printed. More bargains than ever before. This simple noise filter may be added to our present communications receiver with a niniinum of parts one part , It will provide p OU with many more hours of operating pleas-ire if such sounds as high pitched heterodynes mid static crashes bother you. The speaker nitput impedance is 3.2 olims on the HQ-145 o which this filter was added but...