[eagle] Re: Eagle 10 MHz Clock

Louis McFadin w5did at amsat.org
Wed Apr 11 12:52:21 PDT 2007


It was my understanding that we were going to use Mirek's L band  
receiver for the command receiver.
It has an excellent track record and is available.

Lou McFadin
W5DID
w5did at mac.com


On Apr 11, 2007, at 2:04 PM, Lyle Johnson wrote:

> Hello Bill!
>
>> I agree with you fully about the frequency agility issue. If it's not
>> needed for a mission function, then it could be more of headache  
>> than a
>> feature. But then some of the receivers on AO-51 are agile and I'm  
>> not
>> aware of any issues.
>
> AO-51 has 4 crystal-controlled (i.e., not using PLL synthesizer in the
> L.O.) receivers, and one frequency-agile receiver.  The frequency  
> agile
> receiver was a mission requirement.
>
> All of the receivers can be used for command operation, but the
> frequency agile one is so wired because it was "free" - no mass or
> complexity penalty.  That is because the flight computer has 6
> demodulators built in, and a total of five receivers on the  
> spacecraft.
>   It is not intended for use in an emergency recovery scenario.
>
> 73,
>
> Lyle KK7P
>
> _______________________________________________
> Via the Eagle mailing list courtesy of AMSAT-NA
> Eagle at amsat.org
> http://amsat.org/mailman/listinfo/eagle

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