EMRFD Message Archive 65
Message Date From Subject 65 2006-08-02 20:24:39 Steven S. Coles DD 50 to 7 MHz Converter Oscillator 6-Meter Enthusiasts,
Email exchanges with Roy J. Tellason about uses for scrap components
have resulted in several likely combinations. (While I may deserve
the larger portion of blame I'm attempting for shift some
elsewhere.) The latest, and perhaps worst, is the Dumpster-Diver 50
to 7 MHz converter oscillator.
In the main the DD 50-7 consists of a hybrid oscillator in the 14.3
to 14.4 MHz range and a television receiver video IF filter. The
filter selects the oscillator's third harmonic. In my dead bug test
the filter outputs 42.953 MHz with a 14.2318-MHz input. That
converts 50 MHz to 7,047 kHz on an HF receiver. The only additional
components for a first test are a 5-volt power supply, a 0.1 uF
capacitor, and a 1 nF silver mica capacitor. Wired in parallel, the
capacitors span from the oscillator's Vcc pin to its common pin.
67 2006-08-03 09:18:28 Roy J. Tellason Re: DD 50 to 7 MHz Converter Oscillator On Wednesday 02 August 2006 11:24 pm, Steven S. Coles wrote:
> 6-Meter Enthusiasts,Hah! I heard that! :-)
> Email exchanges with Roy J. Tellason about uses for scrap components
> have resulted in several likely combinations. (While I may deserve
> the larger portion of blame I'm attempting for shift some
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
Information is more dangerous than cannon to a society ruled by lies. --James