alleged receptions with strange IDs on hotspot mode

[DO3BOX]

Hi..
I'm running my OpenGD77 as hotspot (using a X50 antenna) since a few days and found some strange entries in the MMDVM log:
1. receipts of invalid IDs like
- 5235051

M: 2020-08-07 04:22:00.702 DMR Slot 2, received RF voice header from 5235051 to TG 9512457
M: 2020-08-07 04:22:01.006 DMR Slot 2, RF voice transmission lost from 5235051 to TG 9512457, 0.0 seconds, BER: 0.0%
M: 2020-08-07 05:15:19.089 DMR Slot 2, received RF late entry from 5235051 to TG 9512457M: 2020-08-07 05:15:19.089 DMR Slot 2, received RF late entry from 5235051 to TG 9512457
M: 2020-08-07 05:32:13.634 DMR Slot 2, received RF end of voice transmission from 5235051 to TG 9512457, 0.4 seconds, BER: 5.9%
M: 2020-08-07 05:46:21.555 DMR Slot 2, RF voice transmission lost from 5235051 to TG 9512457, 0.1 seconds, BER: 11.3%

- 6833326

M: 2020-08-08 04:09:16.579 DMR Slot 2, received RF voice header from 6833326 to 1711625
...

After I set up the mmdvmhost to block invalid MMC now the Ids will be blocked but are still there, e.g.

M: 2020-08-10 04:33:13.175 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:13.232 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:13.536 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:13.592 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:13.891 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:13.953 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:14.257 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:14.314 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:14.613 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:14.675 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:14.973 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:15.030 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:15.334 DMR Slot 2, RF user 5097272 rejected
M: 2020-08-10 04:33:15.391 DMR Slot 2, RF user 5097272 rejected

M: 2020-08-11 18:36:59.808 DMR Slot 2, RF user 3167695 rejected
M: 2020-08-11 18:37:01.728 DMR Slot 2, RF user 3167685 rejected

2. many entries like

M: 2020-08-07 06:36:53.950 DMR Slot 2, RF user 0 rejected
M: 2020-08-07 06:36:54.012 DMR Slot 2, RF user 0 rejected
M: 2020-08-07 06:36:54.311 DMR Slot 2, RF user 0 rejected
M: 2020-08-07 06:36:54.368 DMR Slot 2, RF user 0 rejected
M: 2020-08-07 06:36:54.668 DMR Slot 2, RF user 0 rejected
M: 2020-08-07 06:36:54.730 DMR Slot 2, RF user 0 rejected

3. alleged RF reception reports from stations, which shortly before were on the net on a subscribed group but did not broadcast on the frequency of my hotspot

D: 2020-08-09 09:00:30.165 FindWithName =DO2EF Chris
M: 2020-08-09 09:00:30.165 DMR Slot 2, received network voice header from DO2EF to 2644842
M: 2020-08-09 09:00:33.550 DMR Slot 2, received network end of voice transmission from DO2EF to 2644842, 3.4 seconds, 0% packet loss, BER: 0.0%
M: 2020-08-09 09:01:16.945 DMR Slot 2, received RF voice header from DO2EF to 2644842
M: 2020-08-09 09:01:17.249 DMR Slot 2, RF voice transmission lost from DO2EF to 2644842, 0.0 seconds, BER: 0.0%
M: 2020-08-09 09:01:17.430 DMR Slot 2, received RF voice header from DO2EF to 2644842
M: 2020-08-09 09:01:17.728 DMR Slot 2, RF voice transmission lost from DO2EF to 2644842, 0.0 seconds, BER: 0.0%
M: 2020-08-09 09:01:18.480 DMR Slot 2, received RF voice header from DO2EF to 2644842
M: 2020-08-09 09:01:18.779 DMR Slot 2, RF voice transmission lost from DO2EF to 2644842, 0.0 seconds, BER: 0.0%
M: 2020-08-09 09:01:19.886 DMR Slot 2, received RF voice header from DO2EF to 2644842
M: 2020-08-09 09:01:20.190 DMR Slot 2, RF voice transmission lost from DO2EF to 2644842, 0.0 seconds, BER: 0.0%
M: 2020-08-09 09:01:21.745 DMR Slot 2, received RF voice header from DO2EF to 2644842
M: 2020-08-09 09:01:22.049 DMR Slot 2, RF voice transmission lost from DO2EF to 2644842, 0.0 seconds, BER: 0.0%

D: 2020-08-11 18:17:18.177 FindWithName =DO1PWE Willi
M: 2020-08-11 18:17:18.177 DMR Slot 2, received network voice header from DO1PWE to TG 263112
M: 2020-08-11 18:17:20.339 DMR Slot 2, received network end of voice transmission from DO1PWE to TG 263112, 2.3 seconds, 0% packet loss, BER: 0.0%
M: 2020-08-11 18:34:05.509 DMR Slot 2, received RF voice header from DO1PWE to TG 263112
M: 2020-08-11 18:34:05.813 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.0 seconds, BER: 0.0%
M: 2020-08-11 18:34:06.921 DMR Slot 2, received RF voice header from DO1PWE to TG 263112
M: 2020-08-11 18:34:07.224 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.0 seconds, BER: 0.0%
M: 2020-08-11 18:34:15.923 DMR Slot 2, received RF voice header from DO1PWE to TG 263112
M: 2020-08-11 18:34:16.222 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.0 seconds, BER: 0.0%
M: 2020-08-11 18:34:51.920 DMR Slot 2, received RF voice header from DO1PWE to TG 263112
M: 2020-08-11 18:34:52.224 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.0 seconds, BER: 0.0%
M: 2020-08-11 18:34:54.412 DMR Slot 2, received RF voice header from DO1PWE to TG 263112
M: 2020-08-11 18:34:54.711 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.0 seconds, BER: 0.0%
M: 2020-08-11 18:34:55.010 DMR Slot 2, received RF voice header from DO1PWE to TG 263112
M: 2020-08-11 18:34:55.494 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.0 seconds, BER: 0.0%
M: 2020-08-11 18:34:55.551 DMR Slot 2, received RF voice header from DO1PWE to TG 263112
M: 2020-08-11 18:34:56.813 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.0 seconds, BER: 0.0%
D: 2020-08-11 18:36:57.893 DMR Slot 2, audio sequence no. 4, errs: 19/141 (13.5%)
M: 2020-08-11 18:36:57.893 DMR Slot 2, received RF late entry from DO1PWE to TG 263112
M: 2020-08-11 18:36:58.551 DMR Slot 2, RF voice transmission lost from DO1PWE to TG 263112, 0.1 seconds, BER: 13.4%

The first could be misinterpreted interference. I'm not sure about the second, and the third is really strange. In another case there are several hours between the last reception (in this case via RF) and the alleged RF reception...

correct receiption:

M: 2020-08-10 14:55:24.113 DMR Slot 2, RF voice transmission lost from DO3BOX to TG 26223, 2.3 seconds, BER: 0.8%

uncorrect receiption. I didn't sent at that time:

M: 2020-08-10 23:59:19.094 DMR Slot 2, received RF voice header from DO3BOX to TG 26223
M: 2020-08-10 23:59:19.393 DMR Slot 2, RF voice transmission lost from DO3BOX to TG 26223, 0.0 seconds, BER: 0.0%

neither at this time:

M: 2020-08-11 01:01:43.572 DMR Slot 2, received RF late entry from DO3BOX to TG 26223
D: 2020-08-11 01:01:43.871 DMR Slot 2, audio sequence no. 5, errs: 18/141 (12.8%)
D: 2020-08-11 01:01:44.114 DMR Slot 2, audio sequence no. 0, errs: 16/141 (11.3%)
D: 2020-08-11 01:01:44.471 DMR Slot 2, audio sequence no. 0, errs: 16/141 (11.3%)
D: 2020-08-11 01:01:44.951 DMR Slot 2, audio sequence no. 0, errs: 19/141 (13.5%)
D: 2020-08-11 01:01:45.013 DMR Slot 2, audio sequence no. 1, errs: 18/141 (12.8%)
D: 2020-08-11 01:01:45.132 DMR Slot 2, audio sequence no. 2, errs: 16/141 (11.3%)
D: 2020-08-11 01:01:45.370 DMR Slot 2, audio sequence no. 3, errs: 15/141 (10.6%)
D: 2020-08-11 01:01:46.030 DMR Slot 2, audio sequence no. 4, errs: 20/141 (14.2%)
D: 2020-08-11 01:01:46.149 DMR Slot 2, audio sequence no. 5, errs: 16/141 (11.3%)
D: 2020-08-11 01:01:48.609 DMR Slot 2, audio sequence no. 0, errs: 20/141 (14.2%)
M: 2020-08-11 01:01:48.914 DMR Slot 2, RF voice transmission lost from DO3BOX to TG 26223, 0.7 seconds, BER: 12.4%
D: 2020-08-11 01:02:08.114 DMR Slot 2, audio sequence no. 4, errs: 19/141 (13.5%)
M: 2020-08-11 01:02:08.115 DMR Slot 2, received RF late entry from DO3BOX to TG 26223
D: 2020-08-11 01:02:08.470 DMR Slot 2, audio sequence no. 5, errs: 17/141 (12.1%)
M: 2020-08-11 01:02:08.775 DMR Slot 2, RF voice transmission lost from DO3BOX to TG 26223, 0.1 seconds, BER: 12.7%

[F1RMB]

Hi,

Did you have another DMR transceiver turned ON when doing these tests ?
I found that the MD-390 is sending some crazy frames when its GPS is ON, when it receive some transmission from another TRX..


Cheers.
---
Daniel

[DO3BOX]

Hi,

Did you have another DMR transceiver turned ON when doing these tests ?
I found that the MD-390 is sending some crazy frames when its GPS is ON, when it receive some transmission from another TRX..


Cheers.
---
Daniel

I had my handheld on while the "RF user 0 rejected" occurs and heard nothing.
And I have used a MMDVM HS HAT before and never hat such strange log entries.

[DO3BOX]

Update: The reception from OpenGD77 is apparently way better than from the MMDVM devices.
I could partly trace the signals back to sporadic overreaches of other repeaters/hotspots and filter them by changing the color code. I will continue to observe it and will report back if necessary.
In this context a question about the hotspot mode: is it possible to adjust the RX gain and squelch settings somewhere? These settings might have been useful here.

[VK3KYY]

Update: The reception from OpenGD77 is apparently way better than from the MMDVM devices.
I could partly trace the signals back to sporadic overreaches of other repeaters/hotspots and filter them by changing the color code. I will continue to observe it and will report back if necessary.
In this context a question about the hotspot mode: is it possible to adjust the RX gain and squelch settings somewhere? These settings might have been useful here.

The RF hardware does not have any gain controls and DMR does not use squelch