[time-nuts] Re: Best frequency to start for GHz synth ?

[Richard (Rick) Karlquist]

On 3/31/2021 11:02 AM, Bob kb8tq wrote:
> Hi
> 
> If you were going insane on a fountain, you likely would go with one of the
> sapphire whispering gallery devices as the start of your chain. A good one
> will blow a quartz crystal based part away ….
> 
> 
> Bob
> 

When I left Keysight in 2014, they were still trying to solve the
microphonic problem in their sapphire resonator oscillator.  Also,
it is still necessary to lock the oscillator to a 5 or 10 MHz
OCXO.  The oscillator is tuned by varying its oven temperature
set ppoint.


Rick N6RK