Does anyone know if any of the tuned CW speakers are still commercially
available?
I remember years ago seeing ads for these in the various ham magazines,
but I haven't seen anything lately.
I am assuming that there is something superior (lack of phase shift over
the passband or something) with the tuned audio approach over the other
technique that was around back then like the Autek QF1 for less ringing?
My senior ears are interested ;)
Rick Kunath, K9AO
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