Radio Amateur 09-1963

Please Include Your Zip Code When You Write

Specializing in police and marine monitoring and transmitting equipment. All HF, FM, business units. Also ham gear and tower equipment. Below wholesale prices on many items with new factory warrantees. 5403 Grand Ave. Omaha, Nebr. 68104 402 451-6477 Since the last report, conventions and hamfesls have caused QRM and we missed the lust issue of the magazine. We now have a good system lined up, so my service to all of you wall be speedier and more efficient Remember . . ....

Ohm Balanced

Band Balun

The ferrite core bolun is connected to the coaxial receptacle and the binding post terminals- The balun is supported by its leads. The ferrite core bolun is connected to the coaxial receptacle and the binding post terminals- The balun is supported by its leads. at these frequencies. As mentioned, the baluns were used unchanged. Somewhat better low frequency performance might be obtained by increasing the number of turns in the windings. However, it is believed that General Ceramics Q 2 ferrite...

Jefftronics

Amauter09 Jpg

Send for our 20 page catalog 4791 Memphis Ave. Cleveland, Ohio 44109 Some oi the newer DX'ers mav not be familiar with W9IOFs Second OF slide chart. They should be. For one dollar Electro-Voice, Buchanan, Michigan will mail you this gadget which will save you a lot of time in looking things up in the Call book. The slide-chart has all of the countries listed by call letters prefix and gives you the location, zone, country, great circle bearing, time differential and postage rates as you dial,...

Impedance Brioge

Plane until a perfect mesh was made between the gears. The nut and bolt were then firmly tightened and to date (after hours of testing) have proved capable of support The system was then placed in the plastic food container for protection against the weather, and the bolts inserted through the large right angle, through the roller support, and terminated on the outside of the container. he result is an integrated unit ready for installation on the line, but only after a test run, for it is...

U S Crystals

, K 1 .vlif ,t.,EX 6.75 EX 2J.50 ____EX 7Ji RefJeitometer SUTt BrUltf. ir Hel T, 3 lt M0QOme. T. ST5I1 BC733F lOS-HOmc Convert t-. s.i - like liecvr KX 8.75 TSI019 APM72A 3 Mrtm 3tTl- lt KT Teats APGS0 EX 37.50 T465 ALT7 200W Xiulttr ltfS-35 ime w 2 filfll's KX 1 i .50 T 65 Schematic pp. 1.00 Complete Manual pp, 6.51' TCSJ2 Xmtm Bern Control Hits with Speaker ----EX 6.75 R443. ARN5D Uecvr 11 Tubes 3 Cavities EX 4.T3 Jones Jio. 574.23 Microraatch Doubter Coupler ____EX 12.50 C3186 APS38B...

Columbia Specials

FT -3S8 U R R COLLINS 5 J 3 RADIO RECEIVER Excel. Checked out. HAMMARLUND SP-fi00 RAD O RECEIVER Excel, Checked out, 449.50 H.P. MODEL 524A FREQUENCY COUNTER Excel, Checked out. Guar. , . 895 00 TEKTRONtX 5I -AD OSC1LLISCO P E Excel, cond, Cheeked out. Guar. TEKTRONIX 5JI-AD OSCILLOSCOPE Excel, cond. Checked out, Guar, , , - - T i - 395,00 MEASUREMENTS CORP. MODEL 80 SIG. GENERATOR Excel, Checked out. Guaranteed. A Columbia Special. Only 345,00 I-20SD F M SIG. GENERATOR 1,5 4.5 Mc. and 19-45...

Interceptor

6 & 2 meter receiver . , S473.00 amateur net See your Distributor or write for information RT. 53, MT. TABOR, N, J TELEPHONE 627-6800 Roy Pafenberg W4WKM 3 1 6 Stratford Avenue Fairfax, Virginia Photo Credit Morgan S. Gai s man, Jr. Ferrite components and ferrite core inductors have come into general use in recent years, Despite their appearance in a very wide range of common equipments, many amateurs remain unaware of the amateur equipment applications oi these materials and commonly available...

Antenna Base Adapter Figure

Advantages of the Dual Antenna System Now how does this dual antenna system offer the solution to the situations discussed at the beginning of this article Take the first situation The other station is beginning to lose yon because of QRM on 75 meters, lie solution Tell him, even if you do have to repeat 5 or 6 times that you will QSY to 21.3 mc but will continue to listen to him on 75 meters. From experience, this method works almost all of the time and allows a satisfactory continuation of...

Bgelow Electronics

List issued monthly. 88 or 44 MHy torroids 5 ior 1,50 postpaid. Elliott Buchanan amp Associates, Inc,t 1067 Mandana Blvd., Oakland. California 1 4610, 3000 V g 3.F brand new GE Pyronai oil capacitors S3 each. Can mail. 3-lbs each shipping wt FOB. P. Wandelt,, RD z 1, Unadilla, New York 13849. WANTED Military, commercial, surplus Airborne, ground, transmitters, receiver, testsets accessories, Especially Collins. We pay freight and cash. Ritco Electronics, Box 156, Annandale,...

Electronics

C LIf According to the old saying, there are just two things you can count on death and taxes. Settling up with Uncle Sam may be a must every April 1-5, but a fellow usually isn't forced to ponder his date with the Grim Reaper and many don't. Everf Admittedly, it may sound morbid to Suggest thinking seriously about joining the Si lent Key list, but it's time something was said. Too often, a ham magazine carries the sad story of an ill-advised widow who sold...

Radio Amateur Callbook

Fullerton Ave., Chicago 39, ML See your favorite dealer today for your latest issue or order direct from the publisher add 25c for mailing . milium foil from a pack of cigarettes can he used. The table in Fig, 2 shows the position of the tuning cylinder for each 50 kc change in the range 3800 to 4000 kc. Similar settings for the 40-meter heliwhip are also given. Present calibration marks on the heliwhip permit rapid positioning of the tuning cylinder when optimum operation on a...