George Cortez Jr <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Check this out for a programmable crystal solution.
http://www.softrockradio.org/si570
Enjoy
George NE2I
EP Swynar wrote:
Good Morning All,
Well, I guess I'm doomed to be "...rockbound" for the time being with
my R-4 receiver...
I tried two different versions this past week of homebrewed RF
generators, to replace the optional HC-6/U heterodyne crystals at the
back of the set for SWL'ing, i.e. a solid state one (MPF-102
oscillator + MPF-102 follower + 2N2222A final amplifier) AND a tube
type (12AU7A, half oscillator / half cathode follower) with the
following results:
-SOLID STATE: nice, fairly clean & steady signal up to around 27-MHz,
but far too low in strength / voltage to properly "drive" the R-4.
-TUBE TYPE: much stronger signal output, same frequency range as solid
state, but very rough sounding tone...made all of the CW signals sound
like those homebrewed outfits from the USSR & Cuba back in the 60's.
...So, I guess I won't be terminating my association with Jan
Crystals, Les Smith, AF4K, et al, any time soon!
Happy New Year to all, & my vy
~73!~ Eddy VE3CUI - VE3XZ
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