Hi! I'm new to ham radio in general and chirp in particular, so please bear with me.
I have a new TD-H3 that allows me to enable 1.25m TX. I tried to chirp it to set up some local 1.25m repeaters, but could not because of the _txbands limitation. (It also allows setting TX on some bands that aren't ham bands in the US.) I would like to chirp those 1.25m repeaters into the unit, which would require me to update chirp.
It seems obvious to this naive newcomer that the approach is to dump images modifying each of the settings not currently present to reverse them, and add them to the MEM_FORMAT, then add them to settings handling, after which I should be able to update _txbands to include frequency ranges that have been enabled on the particular HT being chirped, including setting those TX modes in settings.
However, I'm confused about how to deal with at least two things.
1. While the menu on the HT has setting 42. Version "AM_240316 I don't see anything like that in the image I downloaded, so it's not clear to me whether I can make the new settings conditional on some new-enough firmware version.
2. There's only one MEM_FORMAT for the radios supported in tdh8.py and I have no idea whether the formats have diverged between radios because I have only a TD-H3 to play with.
I'm aware that I don't know what I don't know and haven't tried modifying anything yet.