Hello,
thank you very much for the suggestions. I will try to play around with the
125 MHz clock of the AD9850, so let's see what I come up with.
Best 73
Geri, DK8KW (W1KW)
Geri,
I am currently looking into a way how to realize a simple way of doing
FSK
with my DDS VFO.
How about "VXO-ing" the clock oscillator?
Dave G3YXM.
I was thinking the same way. You need 5 Hz out of 137 kHz, that is
about 36 ppm (parts per million).
It is quite easy to shift an overtone crystal by this amount - use
a varicap, or a fixed cap switched by a transistor, or even a small
relay - orrendous, but the baud rate is so slow!
And you need not to play with the encoder.
73 - Marco IK1ODO
[email protected]
Rivalta, ITALY JN35SA (N 45 01' 25.6", E 7 31' 09.4")
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