[Discuss-gnuradio] working AM radio - critique

[Skip Marsden]

A quick note:  Common FCC allowed practice in AM broadcast is positive 
modulation
with peaks to 125% with negative peaks not exceeding 100%.

Low end frequency response of modern transmitters is 50Hz @ -1dB referred to
400Hz or 1kHz.  Some go to 30Hz easily.

I believe things are a bit different for C-Quam AM stereo where the L-R 
information
is phase modulated on the carrier, thereby limiting negative modulation to 
less than
100% to prevent carrier cut off.

skip