TX ad RX EQ are forced to flat in DATA A (and AFSK A) mode.
What frequency tones (TX #### Hz in WSJT-X) are you using? Is WSJT-X
in split mode?
If I adjust the audio input *carefully* to 4 bars, I will see the "ALC"
vary from 3 to 5 bars and the power output will vary between 98 and 102
Watts (when set for 100 W). With the audio input adjusted to "4 bars
with the 5th flickering", I see marginally tighter power control - 99
to 102 W. However, in no case is there a significant variation in the
power output.
The *only time* power output is not as expected is if I am not using
split mode and trying to transmit with audio tones below 300 Hz or
above 2500 Hz (outside the DSP bandwidth).
73,
... Joe, W4TV
On 4/16/2017 8:15 PM, Robie Elms wrote:
I also see the same behavior as Dave. I have verified my K3 is in DATA A
and the TX Equalization is a flat line. However, I routinely make
contacts with JT65. I use WSJT-x v 1.7.0
Robie - AJ4F
On Mon, Apr 17, 2017 at 12:10 AM, Walter Underwood <wun...@wunderwood.org>
wrote:
TX EQ could cause problems like this if not in DATA A.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
On Apr 16, 2017, at 4:52 PM, Joe Subich, W4TV <li...@subich.com> wrote:
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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