How about locking a couple of vco's and measureing voltage ?. ( after 
calibration)


From: Richard Karlquist <rich...@karlquist.com>
To: time-nuts@febo.com 
Sent: Tuesday, October 22, 2013 9:59 PM
Subject: Re: [time-nuts] Need to measure frequencies of two sources 
simultaneously


On 2013-10-22 21:37, Bob Albert wrote:
> If the two frequencies are near one another you can measure the
> difference frequency, which may or may not be helpful.

The difference frequency does not work for us, just as the
ratio does not work for us.  Thanks. 


Rick
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