Dick writes:

I have the CT-90, which only goes to 600 Mhz. Uses a different
pre-scaler (11C90.) The schematic probably wouldn't do you much good.
Couldn't find anything about the series on the Ramsey site. You could
always contact them to see if they have something in the archives.
http://www.ramseyelectronics.com/

I have sent them email. No reply so far.

Thanks.

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