Ya, AM. The 1Mhz band is insanely long range (under the right conditions, blah blah). You may protest that you can FM at 1 Mhz and get the range boost on a muc

Ya, AM. The 1Mhz band is insanely long range (under the right conditions, blah blah). You may protest that you can FM at 1 Mhz and get the range boost on a much nicer sounding signal but: - FM isnt as efficient as AM and 1 Mhz isnt a lot of space - FM "locks in" to a station, partially what makes it sound so good. On AM you hear everything and its "up to you" to figure it out; meaning the intended signal is there and you might be able to squeeze meaning out of it (since you know a lot about it). On FM if the receiver cant "lock in" or locks into another station you cant receive any information. That last point is also why morse code is so reliable - a human operator can very easily distinguish a sine in noise