MMDVM Not decoding repeater audio
Posted: Sun May 23, 2021 1:33 am
Hi Folks:
I moved a Pi-Star setup to a remote site this morning. I had the Repeater Builder MMDVM Board, the Master's Communications MUX-25 on soak test at home for close to 2-months, with an identical repeater (TKR-850) - note identical, not the exact same repeater.
After sweltering in the heat for over 3 hours, I was unable to get the MMDVM board to decode my audio from the repeater.
I was able to adjust the gain pot on the MMDVM board to the point where the 'Clip' LED turns off... then I increased the RD (Raw Discrim) audio from the repeater, and the Clip LED lit up again, so this confirms that my wiring is correct (after all, I had it working at home with the exact same Pi-4, and all cabling for ~ 2 months).
Since I am using the Master's Communications MUX-25, I am also using the repeater for Allstar / FM - the FM side is working fine - taking audio off the RD (Raw discrim) pin of the TKR-850 and I am injecting Allstar TX Audio into the TD line - so again, this confirms that the RX and TX audio is good / no issues with the repeater itself.
The issue is with the digital side - the MMDVM board is not decoding any digital audio (D-STAR / YSF / DMR).
lsusb does show the MMDVM Board:
root@va3pmo(ro):pi-star# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0403:6015 Future Technology Devices International, Ltd Bridge(I2C/SPI/UART/FIFO)
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I am not getting ANY audio out of the MMDVM board. If I connect the repeater to an XLX reflector (using say the DExtra Protocol), I can sniff traffic on port 30001 using tcpdump and I see lots of packets - but NO audio coming out of the repeater.
I somehow suspect a network issue - but even the router is the EXACT same router that I had at home, on soak test, with this setup for ~2 months. I am not sure if this is related, but I do see some IRCClient errors in the ircddbgateway log:
W: 2021-05-23 01:13:33: IRCClient::Entry: SO_ERROR=111
M: 2021-05-23 01:13:39: GATEWAY: OK0HCS G 151.249.107.75
M: 2021-05-23 01:13:40: GATEWAY: F5ZML G 90.30.175.56
M: 2021-05-23 01:13:46: GATEWAY: ZU9DBI G 102.65.22.111
M: 2021-05-23 01:13:52: GATEWAY: DB0LBX G 185.156.156.157
W: 2021-05-23 01:14:07: IRCClient::Entry: SO_ERROR=111
gatewayAddress / hbAddress, etc... in the ircddbgateway config is all set to 127.0.0.1 (same as I had at home) - no changes to the configs.
I checked the loopback address, it's there an ping'able...
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether e4:5f:01:1e:f5:46 brd ff:ff:ff:ff:ff:ff
inet 192.168.5.110/24 brd 192.168.5.255 scope global dynamic noprefixroute eth0
valid_lft 84632sec preferred_lft 73832sec
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
link/ether e4:5f:01:1e:f5:47 brd ff:ff:ff:ff:ff:ff
4: wlan0_ap: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether e4:5f:01:1e:f5:47 brd ff:ff:ff:ff:ff:ff
inet 192.168.50.1/24 brd 192.168.50.255 scope global wlan0_ap
valid_lft forever preferred_lft forever
inet 169.254.206.91/16 brd 169.254.255.255 scope global noprefixroute wlan0_ap
valid_lft forever preferred_lft forever
Any ideas guys? - I really hope I don't have to go to site and pull the repeater out to bring the whole lot home to troubleshoot!
Thanks,
Ramesh, VA3UV, WA3UV, G4PNQ
I moved a Pi-Star setup to a remote site this morning. I had the Repeater Builder MMDVM Board, the Master's Communications MUX-25 on soak test at home for close to 2-months, with an identical repeater (TKR-850) - note identical, not the exact same repeater.
After sweltering in the heat for over 3 hours, I was unable to get the MMDVM board to decode my audio from the repeater.
I was able to adjust the gain pot on the MMDVM board to the point where the 'Clip' LED turns off... then I increased the RD (Raw Discrim) audio from the repeater, and the Clip LED lit up again, so this confirms that my wiring is correct (after all, I had it working at home with the exact same Pi-4, and all cabling for ~ 2 months).
Since I am using the Master's Communications MUX-25, I am also using the repeater for Allstar / FM - the FM side is working fine - taking audio off the RD (Raw discrim) pin of the TKR-850 and I am injecting Allstar TX Audio into the TD line - so again, this confirms that the RX and TX audio is good / no issues with the repeater itself.
The issue is with the digital side - the MMDVM board is not decoding any digital audio (D-STAR / YSF / DMR).
lsusb does show the MMDVM Board:
root@va3pmo(ro):pi-star# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0403:6015 Future Technology Devices International, Ltd Bridge(I2C/SPI/UART/FIFO)
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I am not getting ANY audio out of the MMDVM board. If I connect the repeater to an XLX reflector (using say the DExtra Protocol), I can sniff traffic on port 30001 using tcpdump and I see lots of packets - but NO audio coming out of the repeater.
I somehow suspect a network issue - but even the router is the EXACT same router that I had at home, on soak test, with this setup for ~2 months. I am not sure if this is related, but I do see some IRCClient errors in the ircddbgateway log:
W: 2021-05-23 01:13:33: IRCClient::Entry: SO_ERROR=111
M: 2021-05-23 01:13:39: GATEWAY: OK0HCS G 151.249.107.75
M: 2021-05-23 01:13:40: GATEWAY: F5ZML G 90.30.175.56
M: 2021-05-23 01:13:46: GATEWAY: ZU9DBI G 102.65.22.111
M: 2021-05-23 01:13:52: GATEWAY: DB0LBX G 185.156.156.157
W: 2021-05-23 01:14:07: IRCClient::Entry: SO_ERROR=111
gatewayAddress / hbAddress, etc... in the ircddbgateway config is all set to 127.0.0.1 (same as I had at home) - no changes to the configs.
I checked the loopback address, it's there an ping'able...
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether e4:5f:01:1e:f5:46 brd ff:ff:ff:ff:ff:ff
inet 192.168.5.110/24 brd 192.168.5.255 scope global dynamic noprefixroute eth0
valid_lft 84632sec preferred_lft 73832sec
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
link/ether e4:5f:01:1e:f5:47 brd ff:ff:ff:ff:ff:ff
4: wlan0_ap: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether e4:5f:01:1e:f5:47 brd ff:ff:ff:ff:ff:ff
inet 192.168.50.1/24 brd 192.168.50.255 scope global wlan0_ap
valid_lft forever preferred_lft forever
inet 169.254.206.91/16 brd 169.254.255.255 scope global noprefixroute wlan0_ap
valid_lft forever preferred_lft forever
Any ideas guys? - I really hope I don't have to go to site and pull the repeater out to bring the whole lot home to troubleshoot!
Thanks,
Ramesh, VA3UV, WA3UV, G4PNQ