Upman, here's a new issue for me. When listening to a CON+ system the SDS100 isn't able to decode one particular site for whatever reason.
Signal strength is very good (and should be) but it never seems to read the CC properly and lock onto valid conversations.
I had Airspy & DSD+ running at the same time and the SDS100 never picked up the voice traffic. I could see the scanner sitting on the proper frequency but the LCN value never populated and no voice ever came thru. This was across a few channels.
Log here:
https://www.dropbox.com/s/zggi2f7jlx...Fail.zip?raw=1
System:
https://www.radioreference.com/apps/db/?sid=7571
(Note I'm just giving the link for reference as the RR DB isn't very accurate on this system.)
Notes:
1. This system uses multiple sites and I avoided any irrelevant sites -- so it's only sitting on Site 10.
2. The frequencies/LCNs are correct.
3. This control channel sits on a typical 6.25khz CON+ control channel; however, immediately next to it is a NXDN voice channel. It's very narrow but on the SDR I have my B/W set to 8,000 Hz so I don't pick up the offending signal.
4. RE: #3 I don't know what the bandwidth of the SDS100 is on a given 6.25 khz step but it didn't look like the NXDN signal was affecting the CC but it's hard to know for sure.
5. Noise values do get rather crazy high at times. I've seen them as high as 50K and as low as in the hundreds.
6. In the log file, most of the voice activity is at the end of the log (due to the early morning hours) but the only active TGID was 11998357 so hopefully the scanner is detecting the correct TGID.
7. The voice channels do not have any offending signals near them from what I can see on the SDR and are all use plenty of power output.
