[hpsdr] Excalibur/PowerSDR/HPSDR behavior questions

[John Ackermann N8UR]

Dan, I *think* that Merc and Penny use the 10 MHz signal to lock their 
on-board 122.88 MHz oscillator.  If the 10 MHz goes away, the 122.88 
TCXO keeps free running, but the frequency may jump noticeably and Merc 
and Penny will no longer be locked together in frequency.

John
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Dan Quigley said the following on 11/17/2009 08:36 PM:
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> Happy to report that Excalibur is working great here in my shack.  A big 
> thank you to Graham and the rest of that team.   I have a couple 
> questions about how the PowerSDR/HPSDR system handles the 10Mhz 
> reference clock.
> 
>  
> 
> What happens if Excalibur stops broadcasting its 10Mhz reference clock 
> onto the Atlas bus?   I didn’t see an indication on PowerSDR or notice 
> that Mercury stopped receiving.   Is there a way in software to detect 
> and indicate what card is supplying the clock?
> 
>  
> 
> Best 73’s
> 
> Dan (N7HQ)
> 
> 
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