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Re: Thoughts on future "FM birds" (was: proposal for maximizing fm le o contacts)



Bob:

At 09:18 AM 8/17/00 -0400, Bob Bruninga wrote:
>My design thoughts for a new analog SSB satellite for newcomers is:
>
>   10 meters UP with users using 25 watt Radio Shack $139 10m rigs
>    2 meters down for minimum doppler and greatest link budget
>
>This then would allow users to only need vertical whip antennas.  No need
>for tracking.  THus newcomers would find it trivial to get onto the bird.

Many newcomers to the satellite ranks do not have 10 meter privileges.  The 
RS birds use a 2 meter up/10 meter down transponder.  Most of your other 
comments apply to this mode (A) also.

Mode A (2 meter up/10 meter down) makes a very nice mode for newcomers and 
others wishing to utilize existing equipment and antennas to work the 
birds.  Doppler shift on either band is not severe.  Using standard 
conventions, it is easy to tune the 2 meter uplink to keep your QSO in the 
same relative portion of the transponder.

73, Mike



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