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
frequency response of the D-104 crystal or ceramic mic elements depends
on the load resistance, and the design response needs a 50k to 500k load
resistance - the K3 provides a nominal 600 ohm impedance, so the D-104
will sound 'tinny' if connected directly.
There are those who say that a series 100k resistor in the AF line is
all that is needed, but I have not tried that. The D-104 microphone
that I use has an FET in the base with a 470k resistor across the gate
to load the microphone and a sufficiently low output impedance to
provide a good mic gain range for the K3.
73,
Don W3FPR
On 10/7/2013 7:15 PM, Steven Bertsch wrote:
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 appreciated.
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