DMR-MARC partners with DMRPlus! Dongle access is here!

dv4mini dongle from wireless holdings
dv4mini dongle from wireless holdings

The HCCA Repeater N8OUZ in Traverse City, MI (442.2875) is a MotoTrbo repeater on the DMR-MARC network.

As such, this announcement applies to users of the system, which serves to announce access to new talkgroups accessible to dv4mini users, as well as users of other similar technologies. Here is the text from the official announcement”

8/10/2016:

DMR-MARC is pleased to announce a partnership with the DMRPlus network that will enable DV4mini USB dongles from Wireless Holding, to access the DMR-MARC network.

Today, we are launching three new DMR-MARC talkgroups: talkgroup 133 (DMRPlus USA), talkgroup 143 (DMRPlus UK), and talkgroup 153 (DMRPlus South Pacific), which will allow interconnection between the DMR-MARC and DMRPlus networks using timeslot 1. In the coming months, we are also planning to launch additional interconnected talkgroups, including three German language talkgroups, a French language talkgroup, and a Spanish language talkgroup as well.

These new talkgroups are currently set up as “on-demand”, which can be enabled using the PTT and have a 10-minute inactivity timeout on our eight core DMR-MARC bridges. We will begin rolling out these talkgroups to our core DMR-MARC repeaters while we evaluate the loading on our gateway that connects the DMR-MARC and DMRPlus networks. If we determine the loading is acceptable, we will then roll these new talkgroups out to all of our other bridges for wider distribution. Please note that there is no plan at this time to roll out these new talkgroups to other DMR networks outside of the core DMR-MARC bridges.

We believe our partnership with DMRPlus network provides us with better options for experimentation using the DMR-MARC network, while at the same time, maintain the high degree of reliability that the DMR-MARC has become known for, allowing us to serve our communities during times of emergency when our network is needed the most.

Stay tuned for more announcements related to these talkgroups as they are made available to DMR-MARC repeaters in your local area.

73,

The DMR-MARC Leadership Team

Additional information on this partnership is available via these links:

DMR-MARC announces deal with the DMRPlus network for DV4mini support

 

MotoTrbo Traverse City repeater goes Beta-Online!

The N8OUZ/R DMR-MARC MotoTrbo repeater is on the air on 442.2875+ (input 447.2875).

you can find more info on DMR-MARC Here.

Currently on a temporary transmitter antenna and site, and with limited receive coverage, and limited transmit power.

But, it works, and you can test it.

Program your radios:
Time Slot #1 – Group Call 1 = World Wide
Time Slot #1 – Group Call 3 = U.S. / English Speaking Countries
Time Slot #2 – Group Call 2 =  Chicagoland Repeaters Only

The current transmit antenna is a J-pole at 40ft…. but…

Current Receive antenna, plugged
into the back of the repeater
in my basement..

The current receive antenna is a.. erm.. telescopic whip style scanner antenna standing… about seven inches tall.. plugged into the back of the repeater… in my basement…

Which might seem dumb…

But I can actually use the repeater reliably from work.
… how? I’m really not sure.. but.. I know TDMA has a lot better survivability than analog voice when it comes to getting through the noise floor in a usable way.

Check this out:

On the map, B is where I work, and A is the repeater’s home in my basement..


…I can use it!
With the HT on high power.
The HT on the right, in the picture!

Note the size of the antenna compared to the Yaesu. No vertical gain there at all..

Notice that the Yaesu HT sitting to the left of it is listening to an active signal, same frequency as the XPR 6550 HT on the right.. The signal is sometimes an S2. Usually S0 or S1, sometimes not even there.

Mind you, the length of the Yaesu HT’s antenna is more than three times as long as the Motorola’s!!!

If it were an analog signal, it would be unintelligible. But it is audible, clear, and readable.

I had the same experience on the drive in to work today. Notice on the map. Between “Best Buy” and the number 37 on the map above it, I was very shadowed due to the hills near where it says Grand Traverse Crossing and East/North of that. I had almost NO signal.. on my MOBILE radio with an external antenna in the car, I could barely hear the repeater’s signal. It was not present more than it was. if it was a voice, I would no way have been able to comprehend it. .. the Motorola HT, with just the stub duck, on the SEAT of my car, inside the car, just sitting there horizontally.. I could UNDERSTAND the audio coming out of it.

It’s been a good while since I’ve seen a digital mode so easily and obviously out-perform analog modes.  I’m very impressed.

I am anxious to finish getting the StationMaster antenna on the permanent tower, hardline up, and repeater moved to the final location…

tonight: duplexer fun! Perhaps even a better receive antenna. I still can’t believe it’s … usable! with no duplexer… from across town… from a whip in the basement!!

73
-jre

-SK-