This week's ARRL Letter included the announcement of the passing of Bill
Simons, W9BB. It included a link to a nice story about how Bill
conceived and developed what was almost certainly a ground-breaking
product at its time, and is still one of the best sounding mics you can
find for use with a ham rig. Only a day or so ago I recommended one for
someone who wanted a desk mic to use with his K3.
The thing that makes this mic sound so great was that Ray designed a
strong response peak at around 3kHz to counter the strong rolloff in
that range by the TX and RX crystal filters. I don't know if Bill's
design was the first to use this idea, but it's great engineering, and
every successful ham mic since then has used it.
http://www.k9ya.org/w9bb/images/MAC_Newsletter_June_2002_FINAL.pdf73, Jim Brown K9YC
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