I can actually think of one case in point where a recording could be useful. I
don't think it rises to the level of justifying a requirement that
anyone do anything.
Many times, while running a pileup from a DX location (in and out of contests),
I hear two stations give an exchange in reply to mine. One is the station I
answered, and the other is engaging in wishful thinking. Whenever this
happens, I know I'm going to get a "NIL" QSL card. The recording would enable
me to demonstrate whom I actually worked.
Beyond that, we're getting a bit over the top. More requirements will reduce
participation. Never forget the law of unintended consequences.
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