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Re: Mode-B vs Mode-J VERSUS Mode-S

AO-40 has an L Band uplink and we have hams here in Atlanta using (or 
building) an L Band uplink.


At 08:52 PM 6/19/2003, you wrote:
>Don't know the true origin, but it's codified in the FCC rules that the 
>amateur/satellite segment at L-band is space-to-earth only.
>At 17:44 2003-06-19, Jon Ogden wrote:
>>And Fred, correct me if I am wrong, but is 1269 allocated everywhere in 
>>the world to hams?  I forget the reason why there's no L band downlink 
>>but I thought it had something to do with allocations in some parts of 
>>the world.
>>I probably have it wrong, but if I don't it would be  a shame to lock out 
>>part of the world's hams with just an L band uplink.

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