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I verified that the following method also works.
Copy the following alsa control values from your working image,
you can read them by running alsa-show.sh.
LO Driver Gain
Boot your new image and run:
Now run alsamixer and set LO Driver Gain, PCM & ADC Level. To make
things more convenient you could use an editor and set the 3 values in
the setalsa-udrc-din6.sh script. They are the first 3 levels set.
Verify by running alsa-show.sh one more time.
John Spoonhower <email@example.com> writes:
Thanks. I will give this a try.
On a somewhat different topic...I notice in beacmin.sh that in the comments
aprs symbols are listed. I do not see sending a symbol implemented in this
script. Is this fairly straightforward to add ?
On Sun, Oct 6, 2019 at 11:17 AM Basil Gunn <firstname.lastname@example.org> wrote:
I used a new image (nwdr14) with a UDRC II and it worked fine. I will
release that image today. The only thing I changed from the scripts was
to select discriminator out using the alsa commands. You can do it from
the alsamixer gui as well.
sset 'IN1_L to Left Mixer Positive Resistor' '10 kOhm'
sset 'IN1_R to Right Mixer Positive Resistor' '10 kOhm'
Since you have a working configuration why not save it to a file &
compare it with the configuration you are using with the new image.
ie. save /boot/config.txt, alsa-show, ax25-status -d
You could try a transmit test to see what that gives you
./btest.sh -P udr1 -p
Remember that on a UDRC II the mDin6 connector is port 1 not port 0.
I notice that you have manually edited /boot/config.txt. I did not
manually edit any files for my UDRC II test.