Jefftronics

CLEVELAND, OHIO 44109 NICAP (the National Investigations Committee on Aerial Phenomena) hos over 7000 members *ho are interested in and studying unidentified Hying objects. The director is Mot. D. E. Kcyhoc* Membership is 55 per year including a subscription to the U.F.O. Investigator. NICAP, 1536 Connecticut Avenue, N.W., Washington, D.C 200J6. We wonf your surplus, obsolete, or excess inventory equipment, components and parts Need ground ond air communication equip.,...

News From The Institute Of Amateur Radio

Compiled by A- David Middelton W7ZCf Secretary ( hallenging contest for young members In keeping with the Institute's program for advancement in amateur radio through individual effort and achievement, ioAR announces its first Building-Writing Contest open only to IoAR Members whose birthdate falls after July 15, 1948. First Prize--a 25 Savings Bond, and publication at space rates in 73, for the best construction article for an original piece of AR equipment having at least five tubes or...

Any Converter Now Only

The model 30 uses 3 of the very latest type epitaxial planar UHF transistors for unsurpassed gain and tow noise at all frequqencies. It can operate from 6 to 14 vofts positive or negative ground without any significant change in gain or frequency. The circuit consists of a tuned RF, amplifier, crystal controlled oscillator ond o tow noise mixer, More than 30 high quality parts carefully assembled and tested, Sensitivity is better than Vz micro-volt for a 6 db signal to noise ratio even at 160...

Each

IUB80CK, TEXAS 79401 Ken Cole W7IDF P.O. Box 3 Vashon, Wash. Drawing by K3SUK The Eyes of Texas Are Upon You may remind Congressmen of L.B.J. to me it means G.B. and a memorable conversation with a bam. His name was Guzz Brewer W5DAA, and seven days later a QSL arrived confirming our ten meter contact, On the eighth day I received an official notice from the Kingsville, Texas monitoring station also reporting reception of W7IDF. On 21012 kcs, At that time fhc fifteen meter band...

Dummy Load - Wattmeter 334

Scales Reflected r 200 and 20 watts. Frequency Range 3 to 30 megacycles, Accuracy Power 10 f.s. in 52 ohms Power Loss Negligible. Weight indicator - IV lb. Coupler - lb Price JI15. Waters Test Gear . to get top Operating Performance Operates from 2 to 230 megacycles at 52 ohms. Measures RF output in watts up to a full kilowatt. Three calibrated scales insure accurate readings. Compact weighs but 12 lbs. price

Radio Constructor Panel Signs

Trans-Tek is making some very inexpensive kits that will interest all hams for themselves and for youngsters v ith an interest in electronics. Each kit is clearly and attractively packed and uses modern solid-state components. The kits are Metronome, 2.25 Code Practice Oscillator, 1.79 Hi-Lo Switch for lights and small motors, 1.79 Hi Lo Switch lor larger motors, up to 500 watts, 2.49 6-12 Volt Regulated Power Supply, 5.75 Intercom Amplifier, 5.95 Ultra Hi Gain Amplifier, 5.95 Variable AG...

Wjdl

Ready for final assembly with all ports completed. Circuit board mounts upside down over paddle. Metal cover with control panel follows last. Ready for final assembly with all ports completed. Circuit board mounts upside down over paddle. Metal cover with control panel follows last. Joseph Growling K4CPR 1 034 Falmouth Street Warreritori, Virginia Soldering is one ol the oldest and simplest methods ol joining electronic components, lie-cause of its simplicity and ease of application, it is...

Jw Miller Trf

Table 1 Cefficients for 3 element filters ductor for L, then try to set it to the precise value. But we have a few other choices too. For instance, good quality inductors are available in certain fixed values. The RTTY gang has been using 88 mh torpids for years 44 mh toroids are available just as easily the 88's actually have two 22 mh windings, in most cases . High-inductance if coils are also easily available- For example, J. W. Miller Co. lists a type 6308 25 mh coil, S 3 for less than...

Free Heathkit Catalog

See the wide array of Heatfrkit Amateur Radio Equipment available at tremendous do-it-yourself savings Everything you need in mobile or fixed station gear with full descriptions and specifications t , , Send lor Free copy Please send free 1966 Heathtoit Catalog. Name. ____ ___ _ _. _

Feeoline

Fig, 5- Switchable sense configuration for both right ond left sense. simplr, however, it is only necessary to wire the sense reversing relax, on a switchable plus si n array, into the antenna change over circuits and transmit in one sense and receive in the other. KF4BPZ utilized circular polarization in the Aredtao moonbounce experiments in 1964 and 1965- The system in use there transmitted right hand in space and received leit hand in space. The switching technique, using the scheme shown...

Mosley Diplom

Two New Antennas Customized For 6 amp 10 diplomat-lo oi-io Meter Operation , . Increasing numbers of hams are enjoying 10 meters9 the up and coming DX band. . the band for round tables local emergency nets Mos ey's NEW Diplomat-10 for this progressive band is a rugged 5 8 wave omi-directional vertical antenna rated for 1000 watts features a gain of 3 4 db. over one quar er wave ground plane and 5 9 db compared to isotropic source. The easy-to mountt compact features of this antenna make it...

Wide Range Attenuators

Provides 61 db of attenuation in 1 db steps. Used effectively for S Meter calibration checking receiver sideband suppression measuring cross-talk in switches, receiver image, IF signal rejection, etc- LITTLE DIPPER RF DIP OSCILLATOR Model 331 Fully transistorized . gt t covers 2 to 230 megacycles in 7 overlapping plug-in coil ranges. 1000 cycle audio oscillator for modulation DC amplifier and meter for dip detection, in stainless steeJ case.

Butler Oscillator

Buttler Oscillator Follower

Fig. 4, Symbols for FET's and MOS FETs, Ftg. 6. Triode equivalent of Coffins 100 kc call brotor shown in Fig, 5. Ftg. 6. Triode equivalent of Coffins 100 kc call brotor shown in Fig, 5. LI - SIEMENS Mil aL, OON 2 MATERIAL .J gt e T Pf iN5AHY. 4 J. SECONOART Fig. 8. Isolation amplifier added to Fig 7, LI - SIEMENS Mil aL, OON 2 MATERIAL .J gt e T Pf iN5AHY. 4 J. SECONOART Fig. 8. Isolation amplifier added to Fig 7, Fig. 9. P-channel FET oscillator and isolation amplifier. Fig. 9. P-channel FET...