This makes perfect sense. The ears have a logarithmic response to sound
pressure and to frequency.
David
G3UNA
Another one that Fred K3ZO (many time winner of Dayton CW pileup
contests)
recently mentioned is using extremely low pitch for weak signals. Fred
said many commercial ops he knew used somewhere in the 2-300 Hz range so
he thought his favored 400 Hz was rather high!
73, Bill W4ZV
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