After seeing a new surge in DMR in our area, I figured I would make everyone aware who does not know what Digital Mobile Radio is.
DMR is a true digital signal on a true digital carrier unlike DSTAR which is a digital signal riding an analog carrier. This has the advantage of increased range and no "R2D2" effect that plagues DSTAR when trying to operate with less than optimum signals. Like DSTAR, DMR offers many talk groups over a single repeater, and each repeater has 2 "time slots" that allows 2 users on the frequency at the same time. As we recently disvovered a pair of DMR HTs makes a pretty secure simplex set up as well, being that there are many options that can be set for each channel, greatly reducing the chance of anyone stumbling on you. If someone does not have the same settings as you, they will never hear you even if on the same frequency.
Coverage with DMR, determined by our informal tests, is much better than analog (in UHF) and even slightly better than VHF. Our local DMR is at 1500' and I can use a DMR HT with an external mag mount out to about 90 miles, while it takes 25 watts on VHF to make the same trip. Sound quality with a good signal is almost spooky clear and true.
I still use all modes, but DMR has now figured prominently in all of my communications plans as a means to have both reasonably secure comms and the ability to talk around the world from an HT as long as the internet connection to the repeater is up.
In short, it is well worth consideration as a means of relatively secure comms, especially with the Chinese now entering the market with cheap radios such as this:
Oh, and they work as a standard UHF analog as well....