I have your file. Which banks are not working?
I wonder if the OPs P25 tune mode settings reset to default values? The 796 manual calls the P25 tune mode "APCO 25 Sound Quality" setting on page 51 of the pdf user manual.
I'd bought a 796 just for something different to play with not long ago. It would not decode voice from our statewide VHF P25 system. Because it would never stop on an active talkgroup, I could not use the tune mode adjustment instructions as it never locked to an active talkgroup. I don't recall how I did it but somehow I got it into the tune mode for the VHF band for our VHF system and then I was able to select a known TG that's usually fairly active. I had to sit on the talkgroup and listen for it with another radio so I knew when it was active. Once it became active, I was able to quickly rotate the VFO control until I started hearing voice decodes on the 796. Then I was finally able to adjust it for the best decode quality and save the setting.
I don't think the factory manual explained how to get the radio into P25 tune mode without an active talkgroup to work with. I figured it out somehow but probably by luck mostly.
I wrote down the best tuning values for the VHF system in a file somewhere so I can set them back to that value if they get reset somehow. I actually did have my P25 values reset themselves to what seemed to be default values once and of course I lost all voice decoding of my VHF P25 system again. I never did figure out what caused the values to reset to default. That only happened one time that I'm aware of. That prompted me to write down the best values for the three bands though just in case it happens again!
For the 800 MHz P25 systems here, the default tune values for that band in the 796 were always close enough to at least decode some voice which made it easy to get the radio into the tune adjustment mode for the 800 band so I could fine tune 800 MHz voice quality. VHF was another story though as the default value was too far off to allow any decoding at all.
Unless I missed something, I'm pretty sure the P25 tune mode values are not visible in any of the available programming software packages made for the 796 so those values cannot be set by any programming software either.
Please tell me how if you have found a way to set the P25 values via programming software as I'm sure mine will get defaulted again somehow!
On another occasion, I tried to purposely default the P25 values for all the bands by using the all clear command of holding down the 2-9-HOLD keys together and powering the 796 on. That reset the radios memory and the other settings but it did not clear or default the tune mode values! They were still at the ultimate settings I'd last set them to.
I don't know what the OPs specific issues are so he/she will need to fill you in on that.
I just wanted to throw this info about the P25 tune mode (sound quality) setting out there so it's not overlooked just in case it could be the cause of the OPs issue(s).
