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

[Dr. David Kirkby]

I'm still trying to find a solution to replacing a standard crystal in a Kenwood 
TS-940S transceiver with something more accurate. The transceiver uses a 20 MHz 
crystal oscillator, though a 20 MHz TCXO was available as an option, though few 
rigs appear to be fitted with it.

If one was to make a 20 MHz reference, what's the best way to get a 20 MHz sine 
wave (at least 0 dBm) from a 10 MHz TCXO or OCXO? The 10 MHz devices seem much 
more popular than 20 MHz ones, so I can probably pick a higher spec 10 MHz 
device more easily.

Dave

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