Jun 30, 2017 · I remember, there was a similar system by DJ7VY.

Apr 22, 2006 · Martin DJ7VY published in CQ-DL a two stage preamp for 145/440MHz with BFT66 and BFR34A. I modified this amp for my thesis on phased array ...

Measures: 80x100 mm. L1 forms a combined notch and highpassfilter, to attenuate band I and II signals. See: 1) article by DJ7VY in UKW Berichte nr 4 ...

Homebrew QRP Projects. Paraceiver; A 40m parametrically-pumped regenerative receiver; VLF Receiver; Saturable ferrite core mixer; Mikums; A one-tunnel diode ...

144 MHz to 28 MHz High Dynamic Range Converter - DJ7VY · 144 MHz to 2304 MHz Frequency Multiplier - DC8UG · 432 MHz to 3456 MHz Frequency Multiplier - DC3QS.

I recommend the DJ7VY 130MHz HPF design (VHF Comms, Vol. 10,. Spring 1/1978) , although this is now known not to be an optimum design. It may be convenient to ...

Jul 2, 1997 · Martin, DJ7VY: Low-Noise VHF-Oscillator with Diode Tuning, Digital Frequency Control and Frequency Indicator VHF COMMUNICATIONS Edition 2/1 ...

Jul 16, 2015 · Previous QSL-Cards: Homemade receiver build in 1978: High level mixer SRA-1H, single conversion, 9 MHz IF, concept ideas DJ7VY - cqDL 6/1975.

Simply replacing the transistor in DJ7VY's design with something more recent is very likely indeed to result in an 'informal oscillator'! There are other ...