I thank everyone for their suggestions regarding the Line in settings. I
have tried the following and still find the back ground noise Monitor on SSB
(Microphone disconnected).
MIC SEL - rFL, fPL and Line In settings - still hear fan noise on keying
MIC+LIN - On or Off makes no difference.
I even pulled the Lin in and Lin out plugs to the K3 - still hear fan noise
on keying.
I do not think it is coming from the Lin In plug? A future firmware option
maybe to turn off the Lin in when keying the mic even though this would not
solve my problem.
Please keep the suggestions coming.
Thanks, Irwin - KD3TB
On Sep 28, 2010, at 12:20 PM, KD3TB idar...@gmail.com wrote:
I am trying to find and resolve the source of speaker/headset noise I am
getting with my K3. The noise sounds like a continuous fan noise in the
background. I think the noise is showing up in the Monitor circuitry ? Any
suggestions would be appreciated.
I discovered a high noise level coming from the K3 when I key the
transmitter in SSB. I am not sure if it was there before, as I rarely use
the Monitor function. It occurs with/without any headset connected
(appears
in the radio speakers too) and with/without any microphone connected. I
have also tried a number of different microphones and headsets. I get
the
noise in both Test Mode or Normal transmit mode. I also get the noise when
I
transmit into a dummy load. I am using a Monitor Level of around 8 to
hear
the noise. Obviously it gets loader with a higher Monitor settings.
Here are my settings and what I have tried so far:
MIC SEL - High or Low makes no difference; Bias on or off (should be off
for my microphones) makes no difference.
TX GATE - On or Off and tried different settings - No difference, I even
hear the noise at a setting of 25. I have set it to On with a setting at
09
No difference with Pre-Amp or Noise Blank on or off.
I have played around with the MIC and COMP setting with no Mic connected.
As
I raise the MIC and COMP settings, the noise gets louder.
Finally I set the radio to:
MIC - set to 20
COMP - set to 20
I have the latest Firmware with both my K3 and P3. The K3IO Buffer Kit Mod
for the P3 was done.
Any suggestions on setting(s) that I may be missing would be appreciated.
Thank you, Irwin KD3TB
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
