Set resolution for tunning on SSB demodulator to 50 Hz

[pinkavaj]

Close #920

[pinkavaj]

I'm personally not using this so much, so maybe someone with more insight may want to evaluate this?

[vladisslav2011]

It may be better to make tuning step user configurable.
Add a checkbox to switch from demodulator default to user preferred tuning step and add an input (spinbox?) to set user preferred tuning step.

[pinkavaj]

It may be better to make tuning step user configurable. Add a checkbox to switch from demodulator default to user preferred tuning step and add an input (spinbox?) to set user preferred tuning step.

#928 is already trying to do this. IMHO the actual choice depends on how complex the SW should be, for what audience is intended.

[vladisslav2011]

I think, it is better to have an option than to have no option...
I had a request to set SSB tuning step to 500Hz to match common ham band frequencies in my fork... So, I'll implement this anyways and maybe open a PR.

[argilo]

I had a look into the code history, and left my findings and opinions here: #920 (comment)