[amsat-bb] Re: SDX transponder timing delay measurements?

Robert McGwier rwmcgwier at comcast.net
Tue Sep 12 05:38:39 PDT 2006

I think it is about 35ms.  It is not noticeable and especially with the 
round trip time thrown in the mix,  it will definitely not be 
noticeable.   The number will be important to us when we want to do ranging.


Steve Meuse wrote:
> Douglas Quagliana expunged (dquagliana at aol.com):
>> I know the design isn't even done yet, but has anyone
>> ever measured the time delay of an RF signal *through*
>> the (demo) version of SDX?
> There was a demo of the board at Dayton, I was lucky enough to get a demo while we were setting the booth up. The demo setup, if I remember correctly, was using two SDR-1000's. I didn't find the delay noticable at all. Propagation delay is much more of an issue for HEO. 
> BTW, the SDX sounded FANTASTIC! I had goosbumps when N4HY tuned to the beacon :)
> -Steve
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