Thanks Steve but that's the code that I was talking about. I already have
AD7C's code modified to tune 5 to 5.5 MHz, I just need it to shift frequency
slightly with a DC voltage for RIT. AD7C , himself was one who said he tried to
map an analog input on the Arduino to a frequency shift and didn't like it
because he said it wasn't smooth enough to use for RIT. That's why I'm trying
to do it this way - to mix a VXO with the DDS in order to get a RIT line.
I can post the code I have so far right here, if that's okay with the
moderators. Also, where's a good place to post pics and schematics so folks
here can access them?
Also, Mike... If that's all you need... a DDS that has an input line that
applies a shift in frequency, then code like the modified AD7C code would work.
Are you sure there's not a voltage-controlled RIT line needed in the SB-104?
Curt K8AI
>Curt,
>
>I built a general purpose signal generator using an Arduino to control
>an AD9851 module. I used AD7C's code with a few modifications:
>http://www.ad7c.com/projects/ad9850-dds-vfo/
>
>It would be very easy to use that code as your starting point and add >in
>the RIT function and limit the frequency to 5.0-5.5MHz. If You use the
>Corsair's existing display as I did in my PTO replacement, you can drop
>all the LCD code.
>
>Steve G3TXQ
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