I have built about 20 mmdvm repeaters and I presently have 6 mmdvm repeaters on the air. The one in question at the moment is at our second home 1800 miles away from home which I am visiting for the next couple days.
The repeater is made from a pair of UHF CDM1550LS+ radios, RPi 2B and a ZUM Radio ver 1.01 MODEM USB, DUE it has worked flawlessly for over a year. To standardize equipment to allow a buddy to service the repeater if necessary I swapped out a working, preconfigured RPi 3B, ZUM radio ver 0.9 MODEM HAT and it did not work, more on that later. I only run DMR as a TDMA repeater no other modes are enabled.
What I didn't notice originally, in the process Pi-Star updated to 20191016 which I did not notice at first.
First hint - I took a backup older version from 10 months ago and burned the SDCard and it worked which was version 3.4.16. - Ran update issue appeared!
Second Hint - Next I created a new SDCard from scratch using V4.1.0-RC4 and it worked fine with the July update. I ran the update again the issue appeared.
Now not working means that the portable does not hand shake with the repeater. My Motorola SL300 never works in the failed mode but my CS750 does sometimes. However, often requiring a second or third PTT to pass traffic even though every time you get the talk permit tone. It does not matter which version old or new, after the update of the RPi I see this issue.
I am away from home with limited tools to work with, but with the help of KE7FNS I got a June version of MMDVMHost and replaced the one that was updated and voila! The SL300 is working again with low or no BER. Same with the CS750.
I suspect that my other mmdvm repeaters that are running Pi-Star as well will be broken as well because they also got the same update.
I have built about 20 mmdvm repeaters and I presently have 6 mmdvm repeaters on the air. The one in question at the moment is at our second home 1800 miles away from home which I am visiting for the next couple days.
The repeater is made from a pair of UHF CDM1550LS+ radios, RPi 2B and a ZUM Radio ver 1.01 MODEM USB, DUE it has worked flawlessly for over a year. To standardize equipment to allow a buddy to service the repeater if necessary I swapped out a working, preconfigured RPi 3B, ZUM radio ver 0.9 MODEM HAT and it did not work, more on that later. I only run DMR as a TDMA repeater no other modes are enabled.
What I didn't notice originally, in the process Pi-Star updated to 20191016 which I did not notice at first.
First hint - I took a backup older version from 10 months ago and burned the SDCard and it worked which was version 3.4.16. - Ran update issue appeared! Second Hint - Next I created a new SDCard from scratch using V4.1.0-RC4 and it worked fine with the July update. I ran the update again the issue appeared.
Now not working means that the portable does not hand shake with the repeater. My Motorola SL300 never works in the failed mode but my CS750 does sometimes. However, often requiring a second or third PTT to pass traffic even though every time you get the talk permit tone. It does not matter which version old or new, after the update of the RPi I see this issue.
I am away from home with limited tools to work with, but with the help of KE7FNS I got a June version of MMDVMHost and replaced the one that was updated and voila! The SL300 is working again with low or no BER. Same with the CS750.
I suspect that my other mmdvm repeaters that are running Pi-Star as well will be broken as well because they also got the same update.
73 Jon K1IMD