[time-nuts] What's the best way to double 10 MHz to 20 MHz ?

[Bob Camp]

Hi

You also may want to avoid an oscillator with much 10 MHz content in it. All sorts of odd things can happen with spurs when you have unplanned stuff on the main reference. Another thing to look closely at is - how much of the radio tracks the reference? On some radios, they don't really lock everything up. You get better performance, but not quite what you would expect.

Bob


On May 27, 2011, at 3:55 AM, Dr. David Kirkby wrote:

> On 05/25/11 07:39 PM, Chuck Forsberg WA7KGX N2469R wrote:
>> If the radio's clock can be trimmed with a voltage,
>> why not divide the radio's 20 MHz clock by two and
>> feed the result into the GPSDO in place of the GPSDO's
>> 10 MHz oscillator.
>> 
> 
> It can not be trimmed via a voltage. Also, I'm not keen to require an external reference.
> 
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