Re: An enhanced demodulator for the NOAA APT satellites?
he sees the "sidebands" as 20 or 24 carriers in parallel ...
the apt signal is
one tone only (the 2k4 subcarrier)
but if you frequency modulate a signal with a single tone ....
you see a main carrier ... and lots of signals left and right from
it (the fm sidebands)
those are normal ... and there is not the signal send out several times in parallel
Am 09.10.2019 um 15:45 schrieb Edouard Griffiths: