at trbo.org are no longer are working correctly.
For now...use: xxx.mototrbo.org rather than
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
DCI uses the "50x", "IPSC-5"
c-Bridges by Rayfield
A "Beginners Guide to DMR" or
DMR for Dummies booklet written by John, W2XAB, released May
2014 at Hamvention, Dayton Ohio, now updated since
Background on TRBO-6 and DCI beginning in
How to get started with your repeater or
affiliate one of our IPSC networks as a peer or via your
Get the latest information on additions
or changes for the DCI Group
We support repeaters and IPSC
networks that desire to connection to the many other ham
Repeaters on the DCI's IPSC
The page of last resort (or is that
first?) for category lists or alphabetical
|DCI reserves the right to, at any time, make changes,
with or without notice to enhance or restrict data,
talkgroup or user access. We also reserve the right to
remove your access or block your use or use by any of your users
on or through the DCI c-Bridge, at any time, with or without notice.
This statement has been added because a ham (K1DMR),
incredibly, filed a
2015 and is continuing his prosecution of those
NCPRN repeater and c-Bridge owners
because his access to NCPRN was
restricted due to his (alleged) commercial/business
related use of their network and repeaters. See
GoFundMe Campaign and consider a donation to support
|April 2015 UPDATE: It has been said many times,
in various ways, that if 3 hams get together to form a club,
that 2 clubs will be created. Another way to synopsize
this DMR group experience is to say that, "Infrastructure breeds
politics". No matter how you slice it, there are
many approaches out there in the ham DMR community and the
big guns are now running the show their way with little room
for the "Independent c-Bridge Operators" (ICBO's).
CHANGES PENDING or IMPLEMENTED:
- This website and its
active maintenance will be reduced to serve
our current member repeaters and their users while the
focus forward is to actively serve the
Pacific Northwest region
of the USA.
- Connections for current member repeater
managers will be
maintained; no one must leave, no changes.
- New Individualized/customized repeater managers will no longer be our
hallmark except for our regional support.
Open IPSC network
will still be open to new connections that wish an
independent DMR presence.
- DCI will continue to
explore, support and alpha/beta test the c-Bridge
software and deployment options.
from non-member repeaters/users requesting DMR information and/or support will likely be
referred to the Yahoo
MotoTRBO USA group with few Email responses in the future.
The time and money pit
that DCI (TRBO-6 as well) has invested in since 2008,
while fun and immensely educational, had been reduced to
a burden over politics and bent personalities. We
have joined others who no longer try to help
in the national DMR arena simply because we had the time,
experience, resources and that desire to assist the wider
This decision was made before the Florida c-Bridge
TG eruptions, radio ID
blocking and the lawsuit brought by K1DMR against numberous
repeater owners or their trustees (NCPRN). This is extremely
sad coming on the heals of DCI's issues with MARC and
7-3-15: CalDMR has dissolved).
DCI's departure was prophetically timely in hindsight.
I have no further words on this pitiful spiral down the toilet of
the Ham fraternity.
NADMRC has been a near complete flop as most
c-Bridge groups will not speak up for their fellow
independent c-Bridge operators, more especially not
publically against any of the MARC policies of black-balling
or other efforts to marginalize these independent operators.
CalDMR (now disolved) and MARC are now allied and NATS is history as well.
This is the trifecta, a straight line of uniformity and
DCI sees the light and has
ceased its involvement in the ICBO battles. TAC 310/TAC
123 was the instant and last effort to try to maintain an
independent worldwide Push-to-Talk talkgroup and it too has
been suppressed and is quite likely to be eliminated by the
alliance, as TAC
123 has already.
This longstanding effort to
provide c-Bridging services to any repeater that came our
way has been a wonderful experience, albeit expensive and
time consuming. DMR Email and c-Bridge support required hours each
morning for responses and follow-ups.
Considering the nastiness of Ham DMR as well as time
management and costs, it is time to roll-up the carpet and
devolve to a much smaller operation, one that focuses on
local and regional support, growth and enjoyment and more
importantly, out of the polarization and politics seemingly
inherent on the national stage.
DCI now leaves behind this unfortunate chapter, if not book
on Ham DMR. -- NO7RF / WB6WUI