Since bars 0-4 represent audio drive level and *not* true ALC when
in digital mode (DATA A, AFSK A), what you are seeing represents a
significant change in *audio drive level* for the different tones.
Are you sure you are using DATA A and not AFSK A with the AFSK
Filter turned on? What frequency range are the tones?
73,
... Joe, W4TV
On 4/16/2017 5:29 PM, Dave Hachadorian wrote:
I just started playing with JT-65 and JT-9 this weekend, and I’ve already
worked a bunch of DX, so it’s basically working ok.
Transmitting on JT-65, I see a lot of variation in ALC and power as the various
tones change. I’m using Data A mode with the stock 2.7 filter. I just had a
QSO with tone frequencies of about 1800 – 1950 Hz, and ALC varied from zero to
five bars on the different tones. Sound card output is about 50%, and Line In
level is at 12. Is this variation normal, or am I doing something wrong, and
where should I set the ALC?
Thanks.
Dave Hachadorian, K6LL
Yuma, Arizona
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