[eagle] Re: Eagle 10 MHz Clock

Jim Sanford wb4gcs at amsat.org
Tue Apr 10 17:54:37 PDT 2007


All:
Multiple receivers and transmitters/transfer switch remains an open 
item.  There have been discussions, but no conclusions.  Some who need 
to participate with me in that conversation have been unavailable for a 
while.  We'll get there.

THanks & 73,'
Jim

Bill Ress wrote:

>John,
>
>Sounds like a good plan!  But we probably need a "system" command 
>decision - right?? Is this something project management can buy into, 
>assuming we don't run into serious issues with space or weight?
>
>Don't think power would be impacted since the spare unit would be in a 
>power down mode.
>
>John B. Stephensen wrote:
>  
>
>>Since only UV supports the text mode with omnidirectional ground 
>>station antennas and this is the only linear transponder that operates 
>>over 75% of the orbit, I hope that we can fly two V transmitters and 2 
>>U receivers. Each pair of receivers and transmitters could then 
>>connect to their gain and omni antennas via a transfer switch so that 
>>there is no single-point failure mode.
>>
>>73,
>>
>>John
>>KD6OZH
>>
>>----- Original Message ----- From: "Lyle Johnson" <kk7p at wavecable.com>
>>To: "Bill Ress" <bill at hsmicrowave.com>
>>Cc: "EAGLE" <eagle at amsat.org>; <K3IO at verizon.net>
>>Sent: Tuesday, April 10, 2007 20:00 UTC
>>Subject: [eagle] Re: Eagle 10 MHz Clock
>>
>>
>>    
>>
>>>Hello Bill!
>>>
>>>      
>>>
>>>>In regards to the RF distribution circuitry, I count 8 users of the 10
>>>>MHz clock. Help me out here if I missed one....
>>>>
>>>>1) V Transmitter
>>>>2) U Receiver (maybe two?)
>>>>3) L Receivers (two)
>>>>4) S Transmitter
>>>>5) S2 Receiver
>>>>6) C Transmitter
>>>>7) IHU
>>>>8) Spare (for X or K beacon or a "contributing" customer)
>>>>        
>>>>
>>>(9 and 10) - SDX processors
>>>
>>>73,
>>>
>>>Lyle KK7P
>>>
>>>_______________________________________________
>>>Via the Eagle mailing list courtesy of AMSAT-NA
>>>Eagle at amsat.org
>>>http://amsat.org/mailman/listinfo/eagle 
>>>      
>>>
>>    
>>
>
>_______________________________________________
>Via the Eagle mailing list courtesy of AMSAT-NA
>Eagle at amsat.org
>http://amsat.org/mailman/listinfo/eagle
>
>  
>
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