Change underlying mode for FreeDV LSB to DIGL

[amcdermond]

The underlying mode should be DIGL for LSB similar to how it is DIGU for USB. This will disable any audio processing including CESSB and TX equalization that could corrupt the waveform.

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Before merging:

• [ ] All CI actions must build without errors.
• [x] If the PR adds new user-facing functionality, this must be documented in the user guide. The Markdown files in the manual folder should be modified for this purpose.

[tmiw]

Thanks for the change! DIGL seems to work here. However, I did notice something with the filters that I'm not sure is related. Here's what I did:

1. Set slice A to FDVL and restart SmartSDR. The filter looks as expected:

2. Switch slice A to FDVU, then back to FDVL. SmartSDR still shows the filter as though it's in FDVU:

TX does still look like it's behaving properly in FDVL, though, in that it's transmitting the signal below the dial frequency.

Anyway, if that filter thing is a known issue I can go ahead and merge.

[tmiw]

Actually, I think that filter thing might be an ezDV bug. I'll go ahead and merge this since it otherwise seems to be working okay.

[amcdermond]

Thanks Mooneer. I was going to try to take a look at things quickly on Sunday when I got back from SeaPac. Let me know if I can be of further assistance. There are at least three people at Flex testing these out. I’ve been monitoring 20m pretty regularly when I’m sitting at my desk.

— Annaliese McDermond, J.D. NH6Z She/Her/Hers Senior DevOps Engineer FlexRadio Systems @.***

On Fri, May 31, 2024 at 1:07 AM Mooneer Salem @.***> wrote:

Merged #46 https://github.com/tmiw/ezDV/pull/46 into main.

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[tmiw]

No worries and thanks for the PR!