[Lowfer] Bill Ashlock follow-up

[ToddRoberts2001 at aol.com]

I don't have an idea what Bill was using to generate the WM waveform. I  
think 
someone can do something similar using an HP3336A/B/C signal
generator in sawtooth mode. I believe it can generate a very slow 
sawtooth waveform and tune in milliHertz steps if wanted. It is
a very unique signal generator with unique capabilities. It can
be locked to a 10MHz external GPS standard also.
 
73 - Todd WD4NGG
 
 
In a message dated 4/13/2012 10:26:22 P.M. Eastern Daylight Time,  
kd7jyk at earthlink.net writes:

: 2) Is anyone familiar with how Bill did the WM ? I believe that he used  a
: varactor diode across a crystal and used a varying voltage  (capacitor
: discharged with a resistor?)
: I'm pretty vague on the  specifics but I recall that sometimes the
: 'modulator' would lock up and all  he put out was a constant carrier.

All I recall is that there was several  posts when he was building it and 
he 
sent a few pics  through.

Kurt