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AM on existing Satellites?



".....old fashioned full carrier double sideband AM has no place on
 existing OSCAR satellites!....."

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.  Since the carrier reference is transmitted with the modulated
sideband doppler is tracked, so to speak. Less bandwidth than FM, similar
power requirements to digital modes, no capture effect to "eliminate" weaker
uplinks.....or I could be wrong !

Howie AB2S

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