Yes, it just happened again and here is the log.
09:54:00 nxdn4dmrcon: call start, using ids dst 9 src 377 for this grp call
09:54:00 homebrew: ping sent
09:54:01 homebrew: pong received
09:54:01 modem-tx: start
09:54:04 dmrct: [0] call ended, dur 6.1s ber 0.0% loss 0.0% rssi 0
09:54:05 nxdn4dmrcon: call end, timeout: 0
09:54:06 homebrew: ping sent
09:54:06 homebrew: pong received
09:54:07 modem-djq: emptied, closing
09:54:07 modem-tx: end
09:54:08 pwr: batt 87% est. 25h59m 3974mv usb 0ma cpu 35.4°C chg 0ma
09:54:10 net-chk: ok (34 ms)
09:54:11 homebrew: ping sent
09:54:11 homebrew: pong received
09:54:16 homebrew: ping sent
09:54:16 homebrew: pong received
09:54:21 homebrew: ping sent
09:54:21 homebrew: pong received
09:54:26 homebrew: ping sent
09:54:26 homebrew: pong received
09:54:27 nxdnct: group call started, dst: 9 src: 377 id: 5cf313c6100f3466
09:54:27 nxdn4dmrcon: new call, cid 5cf313c6100f3466
09:54:28 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
09:54:30 nxdnct: call ended, dur 3.4s ber 0.0% loss 0.0% rssi -49
09:54:30 nxdnct: group call started, dst: 9 src: 377 id: c1b956c0f7372935
09:54:31 nxdn4dmrcon: call end, timeout: 0
09:54:31 nxdn4dmrcon: new call, cid c1b956c0f7372935
09:54:31 nxdnct: call ended, dur 0.1s ber 0.0% loss 0.0% rssi -49
09:54:31 homebrew: ping sent
09:54:31 homebrew: pong received
09:54:32 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
09:54:32 nxdn4dmrcon: call end, timeout: 0
09:54:37 homebrew: ping sent
09:54:37 homebrew: pong received
09:54:39 nxdnct: group call started, dst: 9 src: 377 id: 63686d0b00259506
09:54:39 nxdn4dmrcon: new call, cid 63686d0b00259506
09:54:41 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
09:54:42 homebrew: ping sent
09:54:42 homebrew: pong received
09:54:47 homebrew: ping sent
09:54:47 homebrew: pong received
09:54:52 homebrew: ping sent
09:54:52 homebrew: pong received
09:54:56 nxdnct: call ended, dur 16.8s ber 0.2% loss 0.0% rssi -49
09:54:56 nxdn4dmrcon: call end, timeout: 0
09:54:57 homebrew: ping sent
09:54:58 homebrew: pong received
09:55:03 homebrew: ping sent
09:55:03 homebrew: pong received
09:55:08 homebrew: ping sent
09:55:08 homebrew: pong received
09:55:08 pwr: batt 86% est. 25h48m 3969mv usb 0ma cpu 35.9°C chg 0ma
09:55:10 net-chk: ok (31 ms)
09:55:13 homebrew: ping sent
09:55:13 homebrew: pong received
09:55:18 homebrew: ping sent
09:55:18 homebrew: pong received
09:55:23 homebrew: ping sent
09:55:23 homebrew: pong received
09:55:28 homebrew: ping sent
09:55:28 homebrew: pong received
09:55:33 homebrew: ping sent
09:55:34 homebrew: pong received
09:55:36 pwr: batt 68% est. 1h6m 3969mv usb 0ma cpu 35.9°C chg 600ma, warn: low chg curr lim
09:55:36 pwr: batt 68% est. 1h6m 3969mv usb 1500ma cpu 35.9°C chg 600ma, warn: low chg curr lim
09:55:36 pwr: usb on
09:55:36 pwr: batt 83% est. 0h35m 4057mv usb 1500ma cpu 35.4°C chg 300ma
09:55:39 homebrew: ping sent
09:55:39 homebrew: pong received
09:55:44 homebrew: ping sent
09:55:44 homebrew: pong received
09:55:49 homebrew: ping sent
09:55:49 homebrew: pong received
09:55:51 nxdnct: group call started, dst: 9 src: 377 id: 310fc5451edbb20d
09:55:51 nxdn4dmrcon: new call, cid 310fc5451edbb20d
09:55:52 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
09:55:54 homebrew: ping sent
09:55:54 homebrew: pong received
09:55:59 homebrew: ping sent
09:55:59 homebrew: pong received
09:56:04 homebrew: ping sent
09:56:04 homebrew: pong received
09:56:05 nxdnct: call ended, dur 14.6s ber 0.2% loss 0.0% rssi -47
09:56:06 nxdn4dmrcon: call end, timeout: 0
09:56:10 homebrew: ping sent
09:56:10 homebrew: pong received
09:56:10 net-chk: ok (29 ms)
09:56:15 homebrew: ping sent
09:56:15 homebrew: pong received
09:56:20 homebrew: ping sent
09:56:20 homebrew: pong received
09:56:25 homebrew: ping sent
09:56:25 homebrew: pong received
09:56:30 homebrew: ping sent
09:56:30 homebrew: pong received
09:56:36 homebrew: ping sent
09:56:36 homebrew: pong received
09:56:36 pwr: batt 87% est. 0h27m 4089mv usb 1500ma cpu 36.3°C chg 300ma
09:56:37 nxdnct: group call started, dst: 9 src: 377 id: cbc18086cd3addd2
09:56:37 nxdn4dmrcon: new call, cid cbc18086cd3addd2
09:56:39 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
09:56:41 homebrew: ping sent
09:56:41 homebrew: pong received
09:56:46 homebrew: ping sent
09:56:46 homebrew: pong received
09:56:51 homebrew: ping sent
09:56:51 homebrew: pong received
09:56:54 nxdnct: call ended, dur 16.8s ber 0.1% loss 0.0% rssi -47
09:56:55 nxdn4dmrcon: call end, timeout: 0
09:56:57 homebrew: ping sent
09:56:57 homebrew: pong received
09:57:02 homebrew: ping sent
09:57:02 homebrew: pong received
09:57:07 homebrew: ping sent
09:57:07 homebrew: pong received
09:57:10 net-chk: ok (28 ms)
09:57:12 homebrew: ping sent
09:57:12 homebrew: pong received
09:57:17 homebrew: ping sent
09:57:17 homebrew: pong received
09:57:22 homebrew: ping sent
09:57:22 homebrew: pong received
09:57:28 homebrew: ping sent
09:57:28 homebrew: pong received
09:57:34 homebrew: ping sent
09:57:34 homebrew: pong received
09:57:36 pwr: batt 88% est. 0h26m 4098mv usb 1500ma cpu 36.3°C chg 300ma
09:57:39 homebrew: ping sent
09:57:39 homebrew: pong received
09:57:44 homebrew: ping sent
09:57:44 homebrew: pong received
09:57:49 homebrew: ping sent
09:57:49 homebrew: pong received
09:57:54 homebrew: ping sent
09:57:54 homebrew: pong received
09:57:59 homebrew: ping sent
09:57:59 homebrew: pong received
09:58:04 homebrew: ping sent
09:58:05 homebrew: pong received
09:58:10 homebrew: ping sent
09:58:10 homebrew: pong received
09:58:10 net-chk: ok (29 ms)
09:58:15 homebrew: ping sent
09:58:15 homebrew: pong received
09:58:20 homebrew: ping sent
09:58:20 homebrew: pong received
09:58:25 homebrew: ping sent
09:58:26 homebrew: pong received
09:58:31 homebrew: ping sent
09:58:31 homebrew: pong received
09:58:36 homebrew: ping sent
09:58:36 homebrew: pong received
09:58:36 pwr: batt 89% est. 0h24m 4103mv usb 1500ma cpu 37.2°C chg 300ma
09:58:41 homebrew: ping sent
09:58:41 homebrew: pong received
09:58:46 homebrew: ping sent
09:58:46 homebrew: pong received
09:58:51 nxdnct: group call started, dst: 9 src: 377 id: ff4b43e7614512bb
09:58:51 nxdn4dmrcon: new call, cid ff4b43e7614512bb
09:58:51 homebrew: ping sent
09:58:51 homebrew: pong received
09:58:53 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
09:58:56 homebrew: ping sent
09:58:56 homebrew: pong received
09:58:59 nxdnct: call ended, dur 7.9s ber 0.2% loss 0.0% rssi -47
09:58:59 nxdn4dmrcon: call end, timeout: 0
09:59:02 homebrew: ping sent
09:59:02 homebrew: pong received
09:59:07 homebrew: ping sent
09:59:07 homebrew: pong received
09:59:10 net-chk: ok (29 ms)
09:59:12 homebrew: ping sent
09:59:12 homebrew: pong received
09:59:17 homebrew: ping sent
09:59:17 homebrew: pong received
09:59:23 homebrew: ping sent
09:59:23 homebrew: pong received
09:59:28 homebrew: ping sent
09:59:28 homebrew: pong received
09:59:33 homebrew: ping sent
09:59:33 homebrew: pong received
09:59:36 pwr: batt 89% est. 0h24m 4103mv usb 1500ma cpu 36.8°C chg 300ma
09:59:38 homebrew: ping sent
09:59:38 homebrew: pong received
09:59:43 homebrew: ping sent
09:59:43 homebrew: pong received
09:59:48 homebrew: ping sent
09:59:48 homebrew: pong received
09:59:53 homebrew: ping sent
09:59:53 homebrew: pong received
09:59:58 homebrew: ping sent
09:59:59 homebrew: pong received
10:00:04 homebrew: ping sent
10:00:04 homebrew: pong received
10:00:09 homebrew: ping sent
10:00:09 homebrew: pong received
10:00:10 net-chk: ok (34 ms)
10:00:14 homebrew: ping sent
10:00:14 homebrew: pong received
10:00:18 nxdnct: group call started, dst: 9 src: 377 id: 55aec915a6f432c2
10:00:18 nxdn4dmrcon: new call, cid 55aec915a6f432c2
10:00:19 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
10:00:19 homebrew: ping sent
10:00:19 homebrew: pong received
10:00:20 nxdnct: call ended, dur 2.2s ber 0.4% loss 0.0% rssi -47
10:00:21 nxdn4dmrcon: call end, timeout: 0
10:00:25 homebrew: ping sent
10:00:25 homebrew: pong received
10:00:30 homebrew: ping sent
10:00:30 homebrew: pong received
10:00:32 nxdnct: group call started, dst: 9 src: 377 id: e02988be692d3f7b
10:00:32 nxdn4dmrcon: new call, cid e02988be692d3f7b
10:00:33 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
10:00:35 homebrew: ping sent
10:00:35 homebrew: pong received
10:00:36 pwr: batt 89% est. 0h23m 4107mv usb 1500ma cpu 40.3°C chg 300ma
10:00:40 homebrew: ping sent
10:00:40 homebrew: pong received
10:00:45 homebrew: ping sent
10:00:45 homebrew: pong received
10:00:50 homebrew: ping sent
10:00:50 homebrew: pong received
10:00:55 homebrew: ping sent
10:00:55 homebrew: pong received
10:01:00 homebrew: ping sent
10:01:00 homebrew: pong received
10:01:05 homebrew: ping sent
10:01:05 nxdnct: call ended, dur 33.3s ber 0.1% loss 0.0% rssi -47
10:01:05 nxdn4dmrcon: call end, timeout: 0
10:01:10 homebrew: ping sent
10:01:10 net-chk: ok (27 ms)
10:01:11 homebrew: pong received
10:01:16 homebrew: ping sent
10:01:16 homebrew: pong received
10:01:21 homebrew: ping sent
10:01:21 homebrew: pong received
10:01:25 nxdnct: group call started, dst: 9 src: 377 id: 53959cb77e524ac0
10:01:25 nxdn4dmrcon: new call, cid 53959cb77e524ac0
10:01:26 homebrew: ping sent
10:01:26 homebrew: pong received
10:01:27 nxdn4dmrcon: call start, using ids dst 3112610 src 3112610 for this grp call
10:01:27 ssys-uart: nomem for add
10:01:27 ssys-uart: nomem for add
10:01:27 ssys-uart: nomem for add
10:01:27 ssys-uart: nomem for add
10:01:27 ssys-uart: nomem for add
10:01:27 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt
10:01:28 modem-rx: nomem, dropped ct pkt