DMR Repeater does not except any "calls" from my trusted TYT MD380 and Hytera MD785G radios.
Background: The repeater and the two radios worked flawlessly until one morning when I started / rebooted all three items. Please note all three items was shut down properly the night before. Never ever hot-plug any cables to any of the above radios, hotspot or raspberry pi!! Well I did not. I hear some of you say but it must be a problem with the DMR Repeater. I also thought so and worked through all the settings of the repeater firmware, calibration and hardware setup. This took at least two days, working on and off as I find the time. No luck at all. It seems if all three radios just decided to be like a stubborn donkey. Well the next possible fix was to replace the WSPD firmware which I used at the time with Pi-Star firmware. It might have been a firmware "glitch" as my grandson named software issues. I took out the WSPD card and re-write a new SD card with the Pi-Star firmware and slotted it into the Raspberry Pi. No change so I made the assumption that there was nothing wrong with both firmware's. Just as I side-note using DroidStar was working fine on the DMR Repeater, DMR Bridge and ZS Link Hub. I looked at Brandmeister under My Devices and every device in used reflected that it was active and working. ID's matched the devices and Static Talk Groups were set. All that was left was to go through the CPS files of the 2 RF Radios. I thoroughly scrutinized the CPS files but could not find any issues. I started running out of options but somewhere there is a problem and that needs to be fixed.
The error / errors: If I could get one radio to work the other one would be fixed instantly. I needed to look deeply into the error issue. I used the TYT MD380 Radio to label the error. Error = The radio would TX for a short period and then a error beep would sound. The LED on the radio goes red when TX'ing but then alternate between red and green. The DMR Repeater screen stays in the default display while the RX and TX radio LED's will light up as it should. Nothing else happens and this indicate that the MD380 radio does not open the repeater. I hear you shout Talk Group, Color Code, Time Slot, Calibration, TX and RX Frequency, RX Group List and Zone. Well checked all of that with no joy!
How I solved the issue: The solution to the problem was quite easy and was mainly two settings that I overlooked. Once those settings were adjusted I am now able to use both DMR Radios to talk to the repeater without any hassles in Pi-Star as well as WSPD. Yes, some of you were correct. It had to to with "calibrating" the BER of the repeater. Normally one would calibrate a hotspot using the calibrate function provided in the firmware. Using my repeater the calibrating function would not work.
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The following settings in Admin - Advanced - Full Editors - MMDVMHOST File need to be set to enable radios to talk to the repeater.
