There are too many power gain differences across the bands. Currently there are 8 bands/gains defined. Play with the gains first is my suggestion. This is normal afaik.
Rafael
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On 8/21/23 13:45, Gordon Gibby wrote:
A low pass filter element that has gone awry?? I think the 20 and 17 use the same filter?
Gordon
On Mon, Aug 21, 2023 at 8:20?AM John Terrell, N6LN <N6LN@...> wrote:
My V2 is working well but I can only get 3 watts out on 17 meters.
All other bands have higher power. I've done the latest ./update
of the software and also the txcal command. I have adjusted the
scale coefficients on all bands to have no more than 25 watts out
on CW to be conservative. Despite increasing the scale coefficient
for 17 meters it tops out at 3 watts. This is into a dummy load. I
have even tried a new sd card image and there's no difference.
Here are the power outputs (Drive = 100, with hw_settings.ini
scales adjusted, and on 10, 12 and 17 M maxed out):
10 M???? 10 Watts
12 M???? 13 W
15 M???? 25 W
17 M?????? 3 W
20 M????? 24 W
30 M????? 25 W
40 M????? 24 W
80 M??? ? 22 W
I would think it might be a PA transistor or driver problem but
why would it be on one band only? And I used to get much more
power out on 17 meters. Again it doesn't seem to be a software
problem because I even swapped out sd cards to run a different
image from a file saved that worked before. Could it have
something to do with the LPF circuits? But 17M doesn't have its
own dedicated LPF line and all other bands work.
Suggestions?
Jack, N6LN
