Alan,
The 4 pin vs. 8 pin is not your only problem. For pin to pin
connections, I suggest you consult G4WFW microphone connection database,
it is quite helpful.
The D-104 microphone element is quite high impedance, and some have
suggested simply using a series resistor to mitigate the high
Alan,
This is the FET mic preamp that I promised.
Alan,
The 4 pin vs. 8 pin is not your only problem. For pin to pin
connections, I suggest you consult G4WFW microphone connection database,
it is quite helpful.
The D-104 microphone element is quite high impedance, and some have
Don,
Here is the link to a circuit by Paul, W9AC in response to some
questions I asked several years ago:
http://72.52.250.47/images/D104.jpg or
http://72.52.250.47/images/D104.pdf
This is a single component modification for the D104 and K3.
For a D104 that has been butchered
First, may I suggest that you determine whether your D-104 already has that
amplifier. Later D-104s manufactured for solid state rigs had an FET amp
such as Don suggests built into the base. You turn the mic over and remove a
few screws to see if it has the amp. It uses a 9V battery that is in the
On 11/25/2012 12:09 AM, Don Wilhelm wrote:
Alan,
This is the FET mic preamp that I promised.
Alan,
The 4 pin vs. 8 pin is not your only problem. For pin to pin
connections, I suggest you consult G4WFW microphone connection
database, it is quite helpful.
The D-104 microphone element is
On 11/25/2012 12:09 AM, Don Wilhelm wrote:
Alan,
This is the FET mic preamp that I promised.
Alan,
The 4 pin vs. 8 pin is not your only problem. For pin to pin
connections, I suggest you consult G4WFW microphone connection
database, it is quite helpful.
The D-104 microphone element is
Later D-104s manufactured for solid state rigs had an FET amp such as
Don suggests built into the base. You turn the mic over and remove a
few screws to see if it has the amp. It uses a 9V battery that is in
the base as well.
The Astatic amplifier uses bipolar transistors - not FETs. There
On 11/26/2012 1:09 AM, Joe Subich, W4TV wrote:
Later D-104s manufactured for solid state rigs had an FET amp such as
Don suggests built into the base. You turn the mic over and remove a
few screws to see if it has the amp. It uses a 9V battery that is in
the base as well.
The Astatic
Paul,
I would not use the term very easy, Joe. It's possible, but I
haven't done so in 27 years with 5 rigs and 3 different D-104s, all
with the stock amplifiers in the base.
You said: Just crack open the amplifier pot on the bottom enough to
get a bit of audio ... that's the right way to do
Alan (and others) -
I'm a very new K3 owner (S/N 06852) of only a few weeks, and I migrated from
an Icom IC-746Pro, and brought my D-104 and G-Stand over to the K3.
I am using a Heil HC-4 element in my D-104, instead of the original Astatic
element.
One side of the HC-4 goes to a .01 (? or is
From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on
behalf of Alan Slusher [aslus...@caribsurf.com]
Sent: Tuesday, November 20, 2012 8:21 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] Microphone Re-wiring Astatic D-104
Colleagues:
Am
Colleagues:
Am looking for assistance in rewiring an Astatic D-104 Astatic microphone
(T-UG9 stand) for use with my K3 and K2 transceivers. The mic is presently
wired for 4-pin Ten-Tec.
Any assistance would be greatly, and gratefully, appreciated.
Alan V31FA
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