VLF 9 KHz
On Mon, 17 Sep 2007 15:19:26 EDT, "Richard Crowley"
wrote:
It is being picked up directly by two Royer ribbon
microphones which contain an active impedance-
matching circuit implemented with a tube ("valve").
No IF involved there.
Can you spell "audio rectification" ?? ggg
--
73 de K2ASP - Phil Kane
From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
e-mail: k2asp [at] arrl [dot] net
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