Holy pendantic bold caps reply man. Would you please read carefully what I said before jumping the gun? On my earlier post I stated very clearly that A) I don't care if people hear my stuff (as in, I have no expectation for privacy). B ) I also stated NOT use encryption, b/c, once again, its illegal. But thanks for reiterating what I've stated already in an all bold caps statement.
Oh, and I have a cellphone if I want privacy. (more like 10 of them, but whatever)
The GMRS regulations in effect are the ones post-2017, I use whatever regulations are currently in effect, b/c you know, that is what the FCC laws currently say. If you want to use old laws that have been superseded, that is your call, not mine.
Who said P25 was encryption?... not me, so, where did you get that from? I am fully aware that P25 is just another digital format based on the AMBE2 vocoder, etc.
Now, here is what I did said, and I will repeat it: P25 phase I is obsolete. And FM does offer DTMF signaling, sure, its not embedded, but you can achieve the SAME type of signaling for opening different radios, etc, on analog FM. I've done it in the past, is not as clean as DMR, but it can be done.
What? ham MMDVM is not equally compatible, dude, Multi Mode Digital Voice Modems are just devices that "translate" CAI to IP packets, not a ham digital format.
And why are we bringing here the fact it operates better at threshold? why is that relevant? It is pretty much a fact that FM wideband can reach further than anything digital at the moment. Sure, its arguably not going to be crystal clear, but you can copy stuff that the best digital radios simply won't decode... and then, there is always the cellphone.
As for P25 better quality than DMR, yeah, that is like your opinion, man, and everyone has one. That's not factual, b/c now here is my opinion, I think P25 sounds worse than Motorola XPR or Vertex EVX high end DMR radios. So, who is right? who cares.
Now, here are the facts, on DMR you CAN have:
-Single Frequency repeaters.
-Single Frequency, two concurrent conversations.
I think there is some confusion here: There is Tier I DMR which is basically no timeslots, no pulsing, and effectively a single 12.5 kHz digital carrier, the same as P25 Phase I. And then there is Tier II Dual Capacity Direct Mode, which allows for two concurrent calls on a simplex channel, and that is AFAIK, part of the DMR ETSI standard. Then there is Tier II Repeater Operation, which uses two timeslots on receive and two timeslots on transmit. So on any given repeater you can have 2 concurrent conversations using a repeater pair of frequencies, and I believe that with the advanced Moto repeaters you can do pseudo trunking using the timeslots so you can have more than just 2 voice channels.
When you say that one timeslot is wasted, Its not wasted, the other timeslot is just available for a 2nd conversation to take place. But hey, wait a minute... you can't have two conversations on the same channel on P25 Phase I.
PRIVACY DOES NOT BELONG IN GMRS! That's EXACTLY why we're using analog! See 95.1733(c ):
(3) Coded messages or messages with hidden meanings (“10 codes” are permissible);
Everyone is supposed to be able to hear everyone, and there is no expectation of privacy; in fact, there should be a reasonable expectation that others are able to hear you. RAS obfuscates transmissions even though it is not voice encryption. If you don't want to hear kids on pink Barbie radios or you don't want them to hear you, then you shouldn't be using post-2017 GMRS.
What? P25 is not encryption, it's a digital voice format the same way DMR/NXDN is, and ham stuff like MMDVM is equally compatible. Digital voice operates better at FM threshold and/or with mobile flutter. P25, like other digital voice formats, also has embedded signaling, which analog FM can't offer.
DMR is 6.25 kHz-equivalent narrowband on repeaters only (yes, there's DCDM, but that's proprietary), and has worse voice quality than P25. The other timeslot gets wasted in direct mode with Tier I or II operation. dPMR and NXDN48 do not have that limitation due to their 6.25 kHz bandwidth, while P25 and NXDN96 put more data in a 12.5 kHz bandwidth.