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RE: AM on existing Satellites?



"Howie" <hdefelice@petrexintl.com> wrote

>Agreed... however, I belive many HF rigs generate an "AM equivalent" signal
>by inserting a user adjustable amount of carrier into an SSB transmission.
>This could be an interesting mode for LEO operation where doppler is a
>factor...

Many professional satellite downlinks (e.g. NOAA HRPT)
use such a setup. In the case of HRPT, a BPSK downlink
with just enough residual carrier for a carrier-recovery
PLL to lock on to.

Laura Halliday VE7LDH     "Que les nuages soient notre
Grid: CN89mg                       pied a terre..."
ICBM: 49 16.05 N 122 56.92 W     - Hospital/Shafte

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