Bob,
I'm planning one myself for an interface to my Racal RA6830 455 KHz IF. I also did the same tests as you so can't wait to have the real interface. I noticed the color burst crystal divided by 8 gives you an IF of 8.44 KHz into the sound card. Then I noticed my 3725 KHz novice 80 meter crystal would also work. The Soft Rock 40 has a spare flip flop so that will be the oscillator chain. I'm debating the value of the double balanced Tayloe mixer. WA1GFZ
Hedgehog <[EMAIL PROTECTED]> wrote:
Hedgehog <[EMAIL PROTECTED]> wrote:
Hello all,
I discovered SDRadio.exe, and I'm planning to make a quadrature
detector for the IF of my KWM-2A. Just for the heck of it, I decided
to run the program anyway without a "Q" signal. I have to say that
this is good stuff! Finally, I have bandpass tuning as well as
bandwidth tuning. Now, if it had one or more notch filters, I'd be in
heaven. And, that's WITHOUT haven an actual quadrature detector in
the picture!
I'm planning to use something similar to KK7B's Binaural I-Q Receiver,
but using the BFO from my KWM-2 for the oscillator, and changing T1,
C47, and C48 as appropriate for 455kHz. If anyone's already gone down
this road, I'd really appreciate hearing about it!
My thanks to Alberto for some really useful software!
Bob - AE6RV
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