The unamplified D104 has been a subject of discussion here on several
occasions. The easiest, least cost way to use one with the K3 (and
Icom transceivers) is described in this three year old posting by W9AC:
Last night, I built up the following D104 buffer circuit as discussed by
Joe, W4TV.
The basic D-104 (without amplifier) is a crystal microphone, designed
for very high impedance (>100K ohm), and delivering fairly high output
voltage. It worked well with the vacuum tube amplifiers used when the
D-104 was new. The K3 (and other modern rigs) have much lower input
impedance and wi
Steve,
The amplified D-104 should work just fine as long as the gain
potentiometer is set correctly. The K3 ALc display should be helpful in
arriving at a setting that will work with the K3 mic gain set for a
mid-setting.
The answer for the unamplified D-104 is "it all depends". The
freq
I have a friend who is getting two D104 mics. One is an amplified mic (9 volt
battery in the bottom), and the other is not. Will they both work with the
K3/0? Do any changes need to be made in the MENU settings? He will be using
them to remote into my K3/100.
Any suggestions would be greatly ap
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