Quote:
Originally Posted by OriginalJimbo
Hey Joey-
Not hijacking your thread but I am having nearly the same challenges with York County's P25 Simulcast (9 sites) as well. Scanner Frequencies: York County Public Safety Trunking System, York County, South Carolina
Programmed as:
P25 Single Freq Trunk - 868.7750
P25 LP On
CC Disabled
Only difference is that I have 5 solid bars and have the same symptoms sitting next to the tower on 77S. I can't imagine this to be a signal issue but then again I am a newbie. I would love to discover any 396XT radio settings that improve the listening. Doing the HOLD on Control Channel results in solid 5 bars throughout. Occassional CC noise but long periods of silence as well. I have the same disruptions. Could this be due to the Simulcast issues?
While scanning, I see similar symptoms but I do hear intermittent voice. Display jumps from DAT to LNK and back. Audio is solid, then choppy, then returns to solid. Almost as if I am missing every 3rd word. I see the no voice issue similar to yours on E talkgroups but that is to be expected. The TGs you are locking on aren't encrypted right?
I haven't had much luck with the Simulcast thing. Luckily the smart folks on this forum have alerted me to the threads with similar issues with P25 simulcast systems. Ultimately seems to point to "confusion" of signals from 2 or more towers. There is a really good wiki post at Simulcast digital distortion - The RadioReference Wiki if you haven't seen it.
How far are you located from your tower? Are you closer to one site than another?
Best solution to date:
1) Directional Ant 
Sorry I don't have an answer but will certainly keep trying.
-Jim |
Hey thanks for your reply! What you are describing is almost exactly what I am experiencing. No, the talkgroups I am picking up are not encrypted so I should be hearing voice but I get absolutely nothing I definately believe it almost has to be due to the simulcast. I mean you are sitting right next to the tower there is no way it is a signal issue. Mine decodes digital fine on single site towers. Uniden needs to put some serious thought into working on some firmware to improve decode on P25 multi-site systems because the 396XT does a horrible job!!!!!! More and more of the simulcast P25 systems are coming on-line in the clear and we should be able to monitor them if we want to . That is my challenge to Upman! As a matter of fact I am going to start a new thread and give him that challenge! BTW I had read all the information here in ref to digital distortion issues and attempted all solutions provided with no success. So the scanner maufactures need to step up to the plate .I paid $600 for a digital radio and I want it to the decode the digital I need it. It never said on the box, in any advertisments or in the
manual that the 396XT would have a hard time decoded P25 simulcast sties! I think Uniden needs to start taking a serious look at these issues. And come up with some firmware to make it better!!!!