I imagine that the enemy could crack the Morse code, so an alternate
was vital.
Just an uneducated opinion.- Hide quoted text -
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It just hit me that a "cheat sheet" for tap would be easier to make
and you do not really have to "learn" tap, just look at a quick cheat
sheet in the dirt or whatever..
Morse requires length of signal - dots versus dashes. Can't do that
tapping a wall. I don't these guys were worried about secrecy, just
talking and keeping spirits up.