The use of TDMA (either P2 or X2) on a talk group is set by the system admin. It is either allowed or not. The TG is either TDMA or FDMA or Dynamic. The radios do not determine that (except for the dynamic part) the controller determines that. Providing Dynamic is not involved, the statement that the TG is TDMA (P2 or X2) is correct. Providing Dynamic is involved (and paid for), if a FDMA radio affiliates then the TG changes to FDMA and all the radios on the TG change, if Dynamic is not paid for and a FDMA only radio attempts to affiliate with a TDMA talk group it is denied. So, bottom line, the statement as written is correct.
You are probably correct about the encryption. That is determined by each radio. I hear it all the time, one joker will have encryption enabled on a normally not encrypted TG so you can't hear him, but every one else is clear.
Your faith in us having the correct information in the DB is astounding. But as I just pointed out, we only mark them as encrypted "E" if the TG is normally encrypted; not if some joker flips it on his radio alone.
Lou,
Thanks for your input...not that I understood a word of it, but that's OK.
I have since "figured out" something that may allow someone like yourself to better answer my original question/problem.
Yes, I am still receiving "digitized" TX's, however it's usually only 1/2 of any conversation and about 30% of the time. There appears to be NO rhyme or reason to these digitized TX's (i.e., intentional scrambling), and I don't believe any of these are generated by the local "base comm center", only by the mobile units responding or a mobile unit talking to another mobile unit.
I happened to listen to a vehicle chase recently and most of the mobile units I could hear, however one or two (out of the 15 or so involved) were digitized.
That being said, here's what I have found out. While listening to another RR member's live feed, I didn't hear any digital TX's, but after paying closer attention, he also does receive the same digital TX's, however he has "squelched" those TX's on his radio. Do you know if the PRO-106 has the same capability? If not, can you recommend one that can squelch digital TX's? Could it be possible that, since this is a multi-county system, the digitized TX's are actually mobile units being closer to and using a repeater outside of my county, using a different frequency? The other reason I bring this up is because the local jail utilizes the same system and I don't believe I have ever heard any digitized TX's from the jail. I can always hear both sides clearly. Or, although I consistently show full signal strength on all TX's (including digitized) could it be a reception issue? Although we live in the E TN foothills, there are some mountains (although I have a direct line of site unobstructed view of one of the repeaters about 10 miles away).
Please accept my apologies for all of the questions.
Thanks in advance for any help you can provide.
Jeff
P.s. This may also help. I just heard a conversation where a Deputy with a mobile unit walked into a building. His TX's prior to walking in were fine, however once he was inside the store, the TX's started to partially "digitize". Maybe it's simply a reception issue on my end?