Originally Posted by W4UVV
First a question. If Hanover Co. has switched to 100% to P25 why now am I receiving talkgroups 04-021 and 02-104 i.e., "Back in the county" on their EDACS system?
I am located in Prince George using a 996XT and have tower mounted mast mounted preamped mostly Scantennas. The EDACS CC is 4 of 5 bars signal strength and the P25 CC is 5 bars.
After making your recommended menu changes I still am experiencing choppy audio. I tried different value entries up to "99". I left it on "83" and "400ms" P25 wait time. The audio appears about 90% chop free here but not optimized. Additionally I tried changing P25 Wait times with no improvement only making reception worse. Using NFM or FM mode made no difference. I am 20+ air miles from Hanover and do not have a multi-path distortion signal issue.
This audio chopping reminds me of the same reception problem when the Hopewell trs first became operational. At that time I was using a 796D scanner. Part of resolution was manually adjusting the P25 decode threshold level. In part that is what we are trying to do here. Currently my 996XT is set to "Auto". I want to be able to manually adjust it as shown in the Wiki table for "Setting the P25 Decode Level for the BCD396T and BCD996T". The 996XT dynamic table values display a range from "7-13". Unless I am misunderstanding something this setting should be changeable by the user. I can access the dynamic screen table display by pressing "FUNC" and the "Volume" control but I cannot remember what the required user entry for this hidden menu is to enter the "Manual" mode for selecting another value. Pressing the Func control twice does not work on the 996XT to access the "Manual" mode. The default settings are "8" and "Auto". With my 796D and 996T I found "7" and "Manual" to be better settings. These adjustments also were in hidden menus. The Butel ARC996T software had a user option to select "Manual" and change to a different value setting but the Butel ARC996XT software does not have this option. If anyone knows the keyboard entry(s) to access the "Manual" adjustment mode please post it.
The Sheriff's Office dispatch talkgroup chops worse than the Fire Dept. here.
If you are 100% sure you do not have a multi-path distortion signal issue then dont bother messing with the NFM / FM setting that part wont matter. (And please don't argue with my that this setting shouldnt matter because of how Uniden built the scacnner - it does indeed seem to work for those experiencing multi-path issues.)
If you are not having a multi-path issue you will just have to adjust the p25 settings anywhere from 50-200 until you find what you like. If you are having multi-path issues, only use the settings I suggested.
The XT models don't have the same menu or settings as the T models. Essentially you cannot manually adjust and XT model as shown in the Wiki table for "Setting the P25 Decode Level for the BCD396T and BCD996T". The only settings you have are the ones I described.
Other than this - I cannot help.
Also, I cannot help for GRE or RS models - I don't own one of those. Perhaps someone with those models (can experiment with similar tweaks and tell people how to do the same thing I am doing on the Unidens.)