I don't think RFI is implicated. I can hear the loud background noise
even with the RF turned way down. This is something else, I believe,
perhaps something about the way the gain is distributed, or???
73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at<http://beta.reversebeacon.net>.
For spots, please use your favorite
"retail" DX cluster.
On 11/21/2021 8:40 PM, Rick Tavan wrote:
Hi, Pete. Try a dynamic mic or use the front panel (ugh) mic
connector. I've had RFI problems at high power using a CM-500 on the
rear panel mic jack. Elecraft are working on a fix. My Heil headset
with dynamic mic works fine.
73,
/Rick N6XI
On Sun, Nov 21, 2021 at 5:32 PM Pete Smith N4ZR <pete.n...@gmail.com>
wrote:
I don't normally operate phone, but wanted to contribute a few
QSOs to
my club in SS SSB. So I recorded messages on my external USB sound
card, using Audacity. They sounded fine, both on a speaker and on my
K3's monitor. So then I plugged my Yamaha CM-500 condenser mike
headset
into the rear microphone jack, with MIC SEL = rP.L bIAS. That worked
OK, but there was a very high level of white noise, audible both with
live voice and while playing recorded contest messages. I was
reading
700 watts out without talking.
Experimenting, I discovered that the source of the noise was
definitely
the mike on the rear microphone jack. I also didn't like the fact
that
in this setup the mike was live while recorded messages were playing.
How can I rig things so that the mike doesn't contribute this high
level
of background noise, and how can I manage things so that the
microphone
is muted when the recorded messages are playing through the line
in jack.
--
73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at <http://beta.reversebeacon.net>.
For spots, please use your favorite
"retail" DX cluster.
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--
--
Rick Tavan
Truckee and Saratoga, CA
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