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PSK Hellschreiber
Pulse Shift Key Hell
comes in two different formats 105 & 245 bauds
PSK hell 105 baud has a bandwidth of 105hz
and speed of 25wpm
PSK HELL 245 baud has a bandwidth of 245hz
and speed of 25wpm
PSK HELL has great sensitivity but the smaller baud suffers some from Doppler and Multi path
Fading and is also effected by Static crashes and interference
In my experiences on 80, 30, 20, 12, 10m that PSK HELL 105 works a little better than
245 does in all kinds of different conditions and noise levels
but most contacts were CONUS