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/

Dick

On 15 May 2008 18:02:58 -0400, Sam Goldwasser
wrote:

Anyone ever seen this? It's a cute little frequency counter that
is supposed to go to 1.3 GHz, but only the 10 MHz and 60 MHz ranges
work. The 1.3 GHz range is either non-responsive or erratic.

There's a house numbered chip, which may be the prescaler: 2-8758-229
with 274-227 below that.

Any info appreciated.

Thanks!

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