Ed is right, I was thinking of FreeDV as I did not think there was enough uptake of the Motorola system to qualify a peak. DMR is a good mode no doubt, for some purposes. I am not adverse to a new mode if it does something for me. I ask not what I can do for DMR but what DMR can do for me.
For example I adopted SSB because it had a 9 dB gain over AM and I really wanted to work some of that 2 m dx with gear that I could afford and could build. I have gone back to CW because I really want to work some of those weak SOTA stations. (another 10 db?)
I have used FSK441 to work some more dx on 2 m. I use JT65HF on HF to get DX contacts when band conditions are poor - as they are now. It is painfully slow but brilliant with very weak signals that are below the CW threshold.
I have tried FreeDV on HF. Unimpressed. In it’s present form it can’t handle selective fading.
I use FM when mobile and for occasional local contacts. It is a chatter mode IMO, not that there is anything wrong with that.
I have DStar capable radios and have had a contact by that mode. It has techy bits but it doesn’t offer any improvement for what I’m currently doing.
I have been to a lecture and demo of DMR. Excellent technology but I could not see why I would get anything for my investment. I was hoping as a SOTA user you might have a different angle.
For commercial operations DMR has a use; the ease of interfacing with internet and other digital based systems and the reduced bandwidth all make sense in a commercial environment. The number of repeater channels and simplex channels can be effectively doubled by switching the technology. If our amateur population were increasing then that might be the pressure point, but not now.
The power drain is apparently less than for FM but it will still be more than a CW rig and maybe the same as an SSB rig. Any informed comments (but not conjecture) will be appreciated.
Some amateur radio history.
AM, FM and SSB were all invented about 100 years ago. AM offered voice operation at a price that amateurs could afford from the 1930’s on. A bit of drift in the carrier frequency was acceptable. FM only got going when decent VHF tubes became available, the HF band was too crowded for that stuff! SSB had to wait until very stable VFO’s were developed some 65 years ago. SSB was first used commercially in bulk to put multiple voice circuits over a pair of telephone lines. See if you can find an old telephone technician to explain Groups and Super Groups. The point is that historically a technology has only been adopted in general use when it offers a solution to a problem.
DMR seems to offer me a solution for a problem that I don’t have yet or am unaware of having.
Please don’t take my lack of personal enthusiasm to take up Motorola’s system as criticism for anyone wanting to experiment with it. If it really takes on you will be an early adopter. If not well you’ve had a go.at something new.