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November 11th 04, 06:27 PM

"Mark Zenier" wrote in message
...
In article ,
Frank Dresser wrote:

I've thought of going the hobbyist route. My SX-62 has variable IF
selectivity, and the wide setting seem suitable for DRMs bandwidth.
Using
the BFO, I should be able to generate a 12kHz IF output. I just need to
tap
off the detector, and feed the output to the soundcard in my computer.
Of
course, that radio is hardly frequency stable, and the combination of
local
oscillator and BFO stability would be stinko. But it would be cheap.

And it probably wouldn't work. According to one of the series of
articles in Elektor Electronics magazine, you need a good oscillator
in your receiver to get a signal the software can deal with. Their
DRM receiver project used a DDS chip for the LO.

Mark Zenier Washington State resident

I wouldn't say it wouldn't work at all. I was kinda expecting it might lock
for ten of fifteen seconds at a time.

I've got a bunch of FT-243 crystals, and I might even be able to find or
grind one to give me a suitable local oscillator for the radio.

Ten or fifteen seconds. That's about how long I thought this might be a
worthwhile project.

Frank Dresser

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