By chance is MIC + LIN set to the ON mode in the MENU? Should be OFF
for just microphone usage.
I agree with Don. Disconnect everything except the power cables,
antenna coax and microphone.
73
Bob, K4TAX
On 3/17/2019 11:22 AM, Don Wilhelm wrote:
Buck,
It sounds like that noise is coming from whatever computer software
application you are using. You mentioned N1MM.
When you unplug the USB cable, whatever software you are using loses
communications with the radio.
When you plug it back in, that program is not attempting to
re-establish communications.
What applications do you have active on your computer?
I again suggest you get the microphone to work first - unplug
everything from the K3 except the microphone, the power and the
antenna connection. There may be something unrelated to the
microphone going awry, so eliminate everything except the microphone.
When that works, build things back up one at a time until you discover
the culprit.
73,
Don W3FPR
On 3/16/2019 7:13 PM, Buck wrote:
I've tried all the combination of mics and mic bias. The noise
happens even with the mic gain turned all the way down and the rig in
TEST mode. It happens when N1MM is not running. It happens using
the internal DVR card. It happens with the mic disconnected and
using the XMIT button on the front of the radio.
-
Here is a clue. If I turn on the VOX and reduce the either the RF or
AF gain on the receiver, I start getting the noise about once every
half second. It sounds like it starts with a "ping." Sounds like
something is polling the radio.
If I disconnect the USB cable on the back of the radio, no noise. It
seemed to be properly seated. Now, if I plug the USB cable back into
the radio, no noise. Have I found the culprit? A lose USB cable?
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