D-104 microphones come as either Crystal or Ceramic models, which are very
high impedance elements. They have an equivalent circuit of a very small
capacitor and are intended to be loaded by a resistive impedance in the
vicinity
of 1 megohm. The tradeoff is that the lower the load
I have an old Astatic D104 Desk Microphone that I would like to modify to
use with a modern Transceiver. Does anyone have some suggestions?
73, KI4DGH Chuck G.
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Some rigs will take it fine, as is. Is it the one with amplifier in base?
that type will surely work with all modern rigs and proper adjustment of the
amplifier.
On some rigs, with low Z mike inputs, a high Z to low Z transformer can
match the high impedance crystal element of the D-104 to the
At 3:34 PM -0500 7/2/04, Chuck Gehring wrote:
I have an old Astatic D104 Desk Microphone that I would like to modify to
use with a modern Transceiver. Does anyone have some suggestions?
The D104 works quite well with the K2. There are a couple of ways to
make the D104 match the input
On Fri, Jul 02, 2004 at 03:34:46PM -0500, Chuck Gehring wrote:
I have an old Astatic D104 Desk Microphone that I would like to modify to
use with a modern Transceiver. Does anyone have some suggestions?
The Heil Sound web site http://www.heilsound.com shows modifications
to put an electret
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