[time-nuts] Cavity frequency air filled vs vacuum?

[Alex Pummer]

vacuum's dielectric constant is 1, air dielectric constant  is 1.00059 
at 1 atm, therefore the frequency with vacuum is higher, but with air it 
depend on pressure and humidity also
73
KJ6UHN
Alex
On 8/18/2015 9:49 PM, cdelect at juno.com wrote:
> Hi everyone!
>
> I'm trying to figure out what change if any to a cavities resonant
> frequency would be when measured with ambient air pressure and then with
> a vacuum inside. There will not be any pressure on the cavity when under
> vacuum as the outside of the cavity will also be at vacuum. The cavity
> frequency under vacuum will be 1420Mhz + (Maser frequency).
>
> Thanks,  Corby
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.