Amateur Radio Group
Our mission is to connect to and converse with
the regional DMR Ham
community by openly sharing our network resources and talkgroups to enable
dynamic connections to all regional radio amateur DMR groups.
We are no longer actively involved in national efforts due
to the politics and divisiveness shown by several major
Our main pursuits are to actively
the growth of the Amateur DMR regional community generally and MotoTRBO
networking more specifically, to learn more
about the "c-Bridge"
and assist in it's development for use on the Ham networks.
linking via the c-Bridge and other 3rd party efforts that
expand the abilities of TRBO networking more generally which
will also drive growth on the independent network operator
systems. We also support and helped to pioneer the use
redundant talkgroup servers which now provide smooth
day-to-day communications for most of Ham TRBO worldwide.
Simply being able to load the
time slots in the ham DMR world
quickly is a great reason to reach out to all the
Other reasons are to explore DMR and TRBO as well as
learning more about the technology, but
also, connections can be simply for special functions such
as hamfests, conventions and other demonstration events.
The connections can be short or long term, scheduled or
impromptu. The beauty of the c-Bridge is that
connections can easily be severed, made dormant until
needed and then reconnected, manually or dynamically. Any administrator or manager of an ISPC network knows how that can be problematic
when adding or trying to delete repeaters from an IPSC
network. But also, this method requires no trips to the hilltops and no worry
about the network security being compromised by a
disgruntled repeater owner or system operator. This
helps to insure that our approach remains politically
neutral across all the independent Ham DMR groups.
Political neutrality has become astonishingly difficult in
the past few years.
General Caution: Do not buy any equipment,
especially DMR repeaters, before
you know it will do what you want to accomplish. Read this
Ham DMR GUIDE
or ask around first. Motorola repeaters are the
standard in Ham DMR networking and no other manufacturers are
able to network to Motorola's MotoTRBO repeaters (directly)
though gateway projects are appearing. At this time,
for user radios, DCI recommends Motorola, but a less
expensive option is the
CSI CS-750 HT (~$239) or
CS-800 mobile (~$280) and are arguably the best
values overall if cost is driving your selection rather than
highest quality and complete compatibility. The very
least expensive DMR Asian knock-offs have operational issues
and should be avoided at all cost, no pun intended.
c-Bridge connections to
many other c-Bridges. DCI actively supports the
c-Bridge and the philosophy of
connecting IPSC networks for many reasons and more
especially now, since the creation of talkgroup servers. Most
importantly, peer slots on a simple IPSC network were finite and
operationally, more problematic as the number of repeaters
grow on a single IPSC network.
The c-Bridge broke that limitation wide open and now offers so
much more than a simple party line on 2 time slots.
Talkgroups can be used for routing and this enables the use
more than a single talkgroup on a Timeslot. While not
the complete answer to TRBO's IPSC limitations, it is a quantum
DCI is active in the alpha and beta
testing of the c-Bridge and has several in addition to our
main c-Bridge. Occasionally, new software will hit the
main c-Bridge, cause issues and must be rolled back.
Member repeater users are encouraged to
report problems to help us be able to better assist
the developer better their product. The latest
versions/issues are reported on our
If you already have a TRBO repeater or
you are part of an IPSC network, you are welcome to explore
bringing your repeater or IPSC network onto the DCI Open IPSC network.
DCI can also peer in (join) to your network of 1 or more
master repeaters. Whether
to simply get your feet wet as you get up to speed and then
move off into some other direction or you may have a desire
for long term
affiliation, our network managers are available to use and gain experience
with TRBO networking.
If you have a c-Bridge, then it can
easily link to our c-Bridges for talkgroups not available
via the talkgroup servers and these types of
links (conference connections) are preferred over that of
putting a c-Bridge peer on your network or your repeater on
our networks. If interested in exploring these options, please Email us at:
DCI would encourage other c-Bridge
operators and their repeater owners to adopt the
Talkgroup" as well a nationwide "Emergency