P25RX-II P25RX-II Multimode Scanning

[K9DAK]

2022-04-26_0953 sounds better than ever for me on P25-P2! However, conventional NBFM channels don't seem to work when scanning. A FD dispatch channel that I hear on my scanner doesn't cause the P25RX scan to stop. If I hold on my NOAA weather channel it plays fine and sounds good. I have the squelch set right near the noise floor. Even if I hold on that dispatch channel and lower the squelch all the way it most times doesn't seem to break squelch, but sometimes it does. I'm sure it's pilot error... what am I doing wrong?

 

[btt]

2022-04-26_0953 sounds better than ever for me on P25-P2! However, conventional NBFM channels don't seem to work when scanning. A FD dispatch channel that I hear on my scanner doesn't cause the P25RX scan to stop. If I hold on my NOAA weather channel it plays fine and sounds good. I have the squelch set right near the noise floor. Even if I hold on that dispatch channel and lower the squelch all the way it most times doesn't seem to break squelch, but sometimes it does. I'm sure it's pilot error... what am I doing wrong?

Thank you. I'll do some testing on this and add some debugging messages to the console. I've noticed a similar issue with scanning P25 trunked channels. It isn't catching everything like it was before the release. I think something was lost when transitioning from testing to the changes to move the configurations to flash. I'll have another update ready soon.

 

[cheif]

Thanks Todd signal search went to 100% Thanks for verifying the independent scan I hope I am not being a pain with questions and this is helpful to others that are having trouble. Thanks for all your hard work and fast response.

 

[btt]

Thanks Todd signal search went to 100% Thanks for verifying the independent scan I hope I am not being a pain with questions and this is helpful to others that are having trouble. Thanks for all your hard work and fast response.

No sir! Not a pain at all. I want feedback. There are going to be a bunch of issues for a while with this new and incomplete release. I'm hoping to get it into good shape quickly. I do have to take breaks from software on occasion to work on hardware, but it is coming along. I think it will be quite usable within a week or two.

 

[btt]

2022-04-26_0953 sounds better than ever for me on P25-P2! However, conventional NBFM channels don't seem to work when scanning. A FD dispatch channel that I hear on my scanner doesn't cause the P25RX scan to stop. If I hold on my NOAA weather channel it plays fine and sounds good. I have the squelch set right near the noise floor. Even if I hold on that dispatch channel and lower the squelch all the way it most times doesn't seem to break squelch, but sometimes it does. I'm sure it's pilot error... what am I doing wrong?

I forgot to ask you if you are using AUTO gains for all the channel configurations or fixed gains? I'll test how you have it configured.

 

[btt]

Todd,
The new firmware is nice but in my area, the older 2022 03-01 10:07 works MUCH better. The new firmware has a "popping" sound in the rx audio. Thats on the PC speakers and Bluetooth. I moved the AGC step time around with no difference I could hear. I'm monitoring 2 Motorola 800 phase 1 systems, both sound the same. Another observation.. If I have any air band AM+AGC frequencies in a scan list and I'm scanning, The trunked systems stop receiving. They are in the list and the highlight shows they are doing something but they are not rx'ing. The airband freqs sound like they are playing at X2 speed and chopping badly. I don't think it's my set up. I have 2 P25RXII acting the same way. 2022-4-25-1313 is the version I'm using.
Still a FIRM believer in the P25RXII !!.. Happy owner

Hi @dcr_inc, can you give 2022-04-26_1152 a try? I think I have the issue with scanning P25 trunked systems not catching voice grants solved.

 

[cheif]

If you are asking me I have been using auto haven't tried fixed yet auto working good

 

[K9DAK]

Auto everything... have not had a chance to play with fixed settings at all yet.

I forgot to ask you if you are using AUTO gains for all the channel configurations or fixed gains? I'll test how you have it configured.

 

[btt]

Auto everything... have not had a chance to play with fixed settings at all yet.

I think I know what the issue is. I added a fixed count (number of samples ) for gating the squelch threshold. It works for me with the strong analog signals I'm monitoring, but probably should be configurable. I'll test with a function generator and see if I can get it to work well with some weak signals.

 

[cheif]

Todd I am working with 11:52 and p25 fell apart skipping a lot of voice voice timeout has very little effect now

 

[btt]

Todd I am working with 11:52 and p25 fell apart skipping a lot of voice voice timeout has very little effect now

What are you seeing in the console for scanning tsbk?

 

[cheif]

Not sure what tsbk is I went back a few configs still had the same problem. Removed all DMR I programmed in reset reciver and reloaded my p25 working now I will load the latest config to see if still works well it could have been a DMR clashing with the p25.

 

[btt]

Not sure what tsbk is I went back a few configs still had the same problem. Removed all DMR I programmed in reset reciver and reloaded my p25 working now I will load the latest config to see if still works well it could have been a DMR clashing with the p25.

Try version 2022-04-26_1337. This has changes to squelch and more console messages for debugging scanning for both P25 trunked and analog signals.

 

[cheif]

I am back to config 11:52 voice timeout not holding have it set to 5 I then turned off squelch no change not sure what might have happened or what changed

 

[btt]

I'm testing with the no-voice-timeout set to 0. I'll try it with it set to 5.

 

[btt]

I am back to config 11:52 voice timeout not holding have it set to 5 I then turned off squelch no change not sure what might have happened or what changed

After you made changes to the channel configurations, did you press the <Sync Channel Config To Receiver> button? If not, that might explain it.

 

[cheif]

I am running 2022-04-26 13:37 no change its bouncing around like it's chasing tags I found the tsbk 3 to 9 I am running 3 p25 two with CQPSK 1 LSM I am going to try a factory reset

 

[K9DAK]

Hmm... I'm stumped. NOAA weather works fine. The "New WFD" freq in this screenshot works fine. The other three NBFM conventionals won't break squelch, even set to -140. I tried using the Find Optimal Fixed Gains button and now have fixed gains ranging from 24dB for NOAA weather to 30dB for the others. Noise floor is around -115dB, NOAA weather signal is -100dB. 2022-04-24_1437 seemed to work fine on NBFM conventional... are there other buttons in the Channel Config tab that are now covered (you can barely see the gain dropdown and Find Optimal buttons)?

I think I know what the issue is. I added a fixed count (number of samples ) for gating the squelch threshold. It works for me with the strong analog signals I'm monitoring, but probably should be configurable. I'll test with a signal generator and see if I can get it to work well with some weak signals.

 

[cheif]

I set no voice timeout to 0 no change the tsbk all over the board I will start fresh and see what happens I had to do something to mess up it was fine a few hours ago

 

[btt]

Hmm... I'm stumped. NOAA weather works fine. The "New WFD" freq in this screenshot works fine. The other three NBFM conventionals won't break squelch, even set to -140. I tried using the Find Optimal Fixed Gains button and now have fixed gains ranging from 24dB for NOAA weather to 30dB for the others. Noise floor is around -115dB, NOAA weather signal is -100dB. 2022-04-24_1437 seemed to work fine on NBFM conventional... are there other buttons in the Channel Config tab that are now covered (you can barely see the gain dropdown and Find Optimal buttons)?

There have been a lot of changes to how the scanning, squelch, and how it is implemented relative to P25 trunked. It could be that I'm heading in the wrong direction. There is a new version 2022-04-26_1428 available. Please give that a try. Could you post some of the console output while scanning? Yes, there are some more options for the gains that are hidden due to the window not being large enough. Can you make the window larger? Or are you on a laptop and that is the max res?

I set no voice timeout to 0 no change the tsbk all over the board I will start fresh and see what happens I had to do something to mess up it was fine a few hours ago

It may very well be me that messed it up. Do you want me to put a specific version back up to try?