[amsat-bb] A satellite transponder is a shared resource
zmetzing at pobox.com
Sat Dec 10 19:10:33 UTC 2016
On 12/10/16 12:47, Clayton Coleman wrote:
> Often there are portable stations running 5 watts with their Arrow
> antennas. Please, please reduce your CW power. If you are operating CW
> to overcome hearing deficiencies at your station,please consider
> making station improvements rather than taking more of the
> transponder's limited power for yourself.
This is a great example of where a digitally processed (DSP/SDR)
transponder would excel.
Assuming that any one uplink signal didn't crush a sensitive
receiver/ADC with good dynamic range, it could process all signals in
the pass-band and AGC the problematic ones before sending the signal
back to an output DAC/filter/PA.
I never AO-40, so I haven't experienced LEILA in action, but the idea
would be similar. "Quieting the alligators"
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