Dave,
Set the K3 LINE IN gain for a midrange value. It has more resolution
there than at either a high or a low setting.
Then adjust the soundcard to obtain about 4 bars on the ALC meter and
"fine tune" that level with the LINE IN gain to get the 5th bar to flicker.
Note that this is the NO ALC point for the K3 - ALC action does not
start until the 5th bar. The first 4 bars are there to help you adjust
the audio.
Too much audio from the sondcard can cause at least part of what you are
describing. Are you using the 'speaker' output instead of LINE OUT on
the soundcard. If speaker is your only choice see if you can set it for
headphones or amplified speakers.
I had a similar problem at Field Day this year - we were going to use
the logging computer for digital modes, but could not get the soundcard
in that computer to work - we pressed my laptop into service, but it has
no line in, and I did not bring an external soundcard along - had to use
one that another person had.
The output on that soundcard was so high, I had trouble adjusting
levels. We finally put an attenuator in the soundcard output to tame
things. It was still too much audio, but we managed with 4 bars of ALC,
but if we tried to get the 5th bar to flicker, it would light all the
way and sometimes the 6th bar would also light up.
73,
Don W3FPR
On 8/3/2017 4:25 PM, Dave Cole wrote:
Hi,
I have an issue in regards to obtaining 4 bars, and getting the 5th bar
of ALC to fluctuate while transmitting JT65.
I have plenty of audio, and can drive the ALC to 6 or more bars if I
turn things up. However, as I get to 4 bars with the 5th flashing a
bit, the ALC starts to fluctuate between nothing and 4 or 5 bars...
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