Kjw

He regenerative receiver offered highest sensitivity per circuit element, though, and experiments aimed at increasing its sensitivity resulted in the super regenerative circuit This circuit actually oscillates, but its oscillation is interrupted or quenched at a supersonic frequency. As a result, you are able to hear the actual electron noise in the antenna wire. Any more sensitivity than this would be unusable anyway. Unfortunately, both selectivity and stability on a superregen are poor. In...

Bob S Amateur Electronics

CITY, OKLA. 73104 TRADE EVEN Have new boxed Swan 500C with 137XC for any of the following surplus sets SG-1A ARN with PF-348 3G-2 GRM-4 SG-13 ARN MD-83A ARN ARM 47 UPM-98 or 99 R-390A URR ARC 102 618T Phone collect for trade (813) 722-1843, Bill Slep, W4FHV. Slep Electronics Company t 4214 Highway 301, Ellenton, Florida 33532. SAROC FOURTH ANNUAL fun convention scheduled January 8-12, 1969, in Hotel Sahara's new space convention center, Las Vegas, Nevada, Advance...

Rf W

The grounded grid rf amplifier described here covers a continuous frequency range of 3,0 MHz through 38 MHz in five steps. The circuit is straight forward, built around a pair of 4E27 tubes in parallel, with a pi-network output, If you prefer, 813 tubes may be substituted for the 4E27s without any electrical change in the circuitry. Mechanically you will have to change the plate caps for the 813's, the rest of the hardware remains the same. The amplifier is built on a 12 x 12x3 inch aluminum...

Write For Telrex Pl

BALUN FED INVERTED-V EASY T0-1NSTAI L, HI-PERFORMANCE LOW-FREQUENCY ANTENNAS Mono Bands from 23.95-Afso Trapped 2 and 3 Band Kits. 3, 4 or 5 Band ConicaWnverted-V Antennas from 52.95 3, 4 or 5 Band, 5 to 10 TELREX COMMUNICATION ENGINEERING LABORATORIES ASBURY PARK, N. J. 07712 Peter A Lovelock WbAJZ 235 Montana Avenue Santa Monica, California 90403 I had been listening to glowing reports on the Hustler 4-BTV trap vertical antenna for almost a year before I decided to try one. A...

Try Us For Highest Tradeins

Elco 753 used 99.00 Eico 753 f w new 195,00 Eico 751 f w new SO.OO SB300 revr amp SB400 emitter, Heath, special 495.00 2iCL200G new 495.00 Ranger 11 t w, new, 250.00 FRECK RADIO amp SUPPLY CO., INC, 38 Biltmore Avenue Asheville, N.C, 2A8 H Tt T, Freck W WL 704-254-9551 Doug Jones WB4IH0 LARGEST SELECTION In United States AT LOWEST PRICES 48 hr. delivery Thousands of frequencies In itoclc. Types Include HC4 U, HCE8 U, FT-241, FT-243t FT-I7 , etc. SEND 10 for catalog with oiclllator circuits....

Jefftronics

ARC-1 Transceiver 100-156 Mc. 28 tubes, 20.00 Command Xmtr. 4-5.3Mc. Less tubes, fair Loading Capacitor, 5-sections, 4Q0pf per sections, with ' saft adapter. 2,30 Please add shipping charges Hundreds of other surplus parts and equipment. 4252 Pearl Road Dept. J8 CLEVELAND, OHIO 4410 Lately I've read a few comments on the intruders in the JO meter hand, It is my opinion they present us with ft golden opportunity to demonstrate our skill as radio operators. Having seen the Heath SB-101 with its...

M

12 BLANKET FREE WITH 2 NEW 56 SUBSCRIPTIONS This 50 x 60 sport blanket comes from Spain and is made of virgin wool, cotton and rayon. Machine washable. Beautiful yellow red and black design. Comes in zipper vinyl case with handle. Fine for the car, picnics, etc. 24 HOUR OPERATING DESK CLOCK FREE WITH 5 NEW amp SUBSCRIPTIONS 3 K amp E SLIDE RULE FREE WITH 1 NEW 6 SUBSCRIPTION A slide rule is indespensible around the ham shack or the office. This one has everything you need, but is inexpensive...

Zip

Carole Allen W5NQQ 308 Karen Drive Lafayette, La, 70501 id you ever attend a meeting for the si time without even one person saying, ice to see you here ' or Be sure and ome back next time Most of us have and an well remember t linking, Well, I ouirln t have shown up in the first place, I - -re's no percentage in being thin-skinned, ai newcomers in a club should be given ome kind of recognition. I Aknmari, W8QWI, former president of tile Lorain County, Ohio, Amateur Radio Asia ion feels so...