[App_rpt-users] DMR to Analog/app-rpt

[Brett Friermood]

My observations: I am not aware of anything for transmit. For
receive/decode I am only aware of DSD and a couple data related
utilities. For a repeater I think it might be possible to use plain
narrowband (12.5 kHz) radios with low level access to the
transmitter/receiver due to no timing constraints. However for
"subscriber unit" operation a USRP or similar would be needed due to
the on/off timing of TDMA.

With the OP25 Project's recent breakthroughs in trunking and CQPSK
simulcast reception, I believe some of them are now working on Phase
II P25. Given the very similar nature of the two technologies it would
seem a spin off of that would be a good starting point for DMR. I
would think a similar hook into Asterisk could be used.

I've been gong to send out an email on the OP25 list when I got time
with few questions, one being the existence of such a DMR project or
work being done toward it. I believe there a couple developers also on
this list so maybe they will chime in.

Brett KQ9N


On Thu, Jan 30, 2014 at 12:37 PM, Bryan D. Boyle <bdboyle at bdboyle.com> wrote:
> beginning, with the growing interest in the DMR/trbo usage...to investigate integrating the two technologies.  Connect Systems is starting to bring in DMR cable DMR/analog HTs for not a lot more than a wouxun...and, yes, know about the DMR-MARC group.  But, my question...is anyone in the band investigating navigating the DMR to Asterisk chasm yet?
>
> PM is probably preferable than broadcast, unless there is interest on the part of the tribe....or I've missed something along the way...
>
> --
> Bryan
> There are two hard problems in computer science: cache validation, variable substitution, and off-by-one errors.
>
> Sent from my iPad
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