What do the various LED colors mean for the SIG LED when the P25RX is sitting on a control channel signal?
Red
Blue
Green
On my VHF statewide trunked system, that LED is mostly RED with occasional Blue. The constellation screen shows it synced the greatest percentage of time and not synced a less amount of time even though the SIG LED is RED 90% of the time. It seems to miss a fair amount of voice grants.
On another 800 MHz system here, the SIG LED is almost always Green. I've Never seen this LED show Green on one of the VHF sites in my range.
I guess I'm confused by these colors.
My biggest issue though is with the statewide VHF P25 (non simulcast) system here, it seems the P25RX is having a tough time holding sync with any of the sites control channels within my range. I get good -77 to -88 signal levels from two sites. One site is in the 152 MHz paging band so I've tried paging notch filters to knock down the flamethrower paging transmitter signal level nearby. I must be careful though otherwise I'll also knock down the intended control channel signal I'm after.
I've also tried a step attenuator on these VHF sites but nothing really seems to help the P25RX remain synced for the VHF sites.
I've been following the P2 testing chatter and have played with those versions after seeing mention of not holding the correct site NAC.
Well, that's exactly what I was seeing with my VHF P1 sites, the NAC was jumping all over the place and voice decodes only seemed to occur when it showed the correct NAC. The SIG LED also seemed to align with the correct NAC being shown as that was the only time the SIG led was blue.
Running the latest few days of P2 test versions, the NAC is now holding steady and correct on my VHF sites but the SIG LED still changes from mostly Red to Blue and back to Red.
When I watch the console output, there is one value I see that tells me if the SIG LED will be red or blue, that's the tsbk_ps value. As long as tsbk_ps is 11 or greater, I maintain a Blue SIG led. Once tsbk_ps drops to 10 or below (including down to zero), my Sig LED turns Red.
I'm not sure what the tsbk_ps value is representing but it's definitely related when it comes to successfully monitoring these VHF P25 sites. These sites are also not simulcast but I don't think that should matter.
Is the P25RX just not up to VHF reception down around 152 MHz?
FYI - I do get great reception from these VHF P25 sites with about any scanner make or model out there.
Any Ideas anyone?
And no, I'm not knocking the P25RX in any way! I bought one as it's size is cool and I think it has great potential. I also bought it to help support btt's efforts in getting it going the way it was intended.
I don't have a lot of time as far as capturing and posting logs here but I'll do what I can when I can if asked.
The trouble system is here with VHF sites 3-16 and 3-27: Missouri Statewide Wireless Interoperable Network (MOSWIN) Trunking System, Statewide, Multi-State - Scanner Frequencies
Thanks!
Edit: Watching the tsbk_ps value, I do now see the SIG LED turn Green on at least one of my VHF P25 sites when the tsbk_ps value goes to 22 or greater only.
And of course the SIG LED also turns green when a TG with Voice is active but that occurs on any system the P25RX is receiving.
I'm running the 30-1308 version of BTConfig also.
Red
Blue
Green
On my VHF statewide trunked system, that LED is mostly RED with occasional Blue. The constellation screen shows it synced the greatest percentage of time and not synced a less amount of time even though the SIG LED is RED 90% of the time. It seems to miss a fair amount of voice grants.
On another 800 MHz system here, the SIG LED is almost always Green. I've Never seen this LED show Green on one of the VHF sites in my range.
I guess I'm confused by these colors.
My biggest issue though is with the statewide VHF P25 (non simulcast) system here, it seems the P25RX is having a tough time holding sync with any of the sites control channels within my range. I get good -77 to -88 signal levels from two sites. One site is in the 152 MHz paging band so I've tried paging notch filters to knock down the flamethrower paging transmitter signal level nearby. I must be careful though otherwise I'll also knock down the intended control channel signal I'm after.
I've also tried a step attenuator on these VHF sites but nothing really seems to help the P25RX remain synced for the VHF sites.
I've been following the P2 testing chatter and have played with those versions after seeing mention of not holding the correct site NAC.
Well, that's exactly what I was seeing with my VHF P1 sites, the NAC was jumping all over the place and voice decodes only seemed to occur when it showed the correct NAC. The SIG LED also seemed to align with the correct NAC being shown as that was the only time the SIG led was blue.
Running the latest few days of P2 test versions, the NAC is now holding steady and correct on my VHF sites but the SIG LED still changes from mostly Red to Blue and back to Red.
When I watch the console output, there is one value I see that tells me if the SIG LED will be red or blue, that's the tsbk_ps value. As long as tsbk_ps is 11 or greater, I maintain a Blue SIG led. Once tsbk_ps drops to 10 or below (including down to zero), my Sig LED turns Red.
I'm not sure what the tsbk_ps value is representing but it's definitely related when it comes to successfully monitoring these VHF P25 sites. These sites are also not simulcast but I don't think that should matter.
Is the P25RX just not up to VHF reception down around 152 MHz?
FYI - I do get great reception from these VHF P25 sites with about any scanner make or model out there.
Any Ideas anyone?
And no, I'm not knocking the P25RX in any way! I bought one as it's size is cool and I think it has great potential. I also bought it to help support btt's efforts in getting it going the way it was intended.
I don't have a lot of time as far as capturing and posting logs here but I'll do what I can when I can if asked.
The trouble system is here with VHF sites 3-16 and 3-27: Missouri Statewide Wireless Interoperable Network (MOSWIN) Trunking System, Statewide, Multi-State - Scanner Frequencies
Thanks!
Edit: Watching the tsbk_ps value, I do now see the SIG LED turn Green on at least one of my VHF P25 sites when the tsbk_ps value goes to 22 or greater only.
And of course the SIG LED also turns green when a TG with Voice is active but that occurs on any system the P25RX is receiving.
I'm running the 30-1308 version of BTConfig also.
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