DMRInfo - Information and Tools for DMR in Amateur Radio

Contact Manager

For those that are not aware of Contact Manager by N0GSG available at you really should take a look if are maintaining code plugs for any radio that uses the RDT or RDB file format for the code plugs. This includes the Connect Systems, Tytera and the new Texas Digital Radio DMR radios that are on the market.

I have used Contact Manager a few times to do some basic edits and to move files between a MD-380 and CS700, but today I tried something with it that I had not attempted before that is the structural import feature. I used it to import most of the data from a CS800 code plug and write it out for the TDR6100. It converted fine, heck it uses the same format of file and I am guessing that if I were to look at it in a hex editor it would map out identically, but I digress. It looked good in the TDR CPS, but since I don’t have a TDR6100 or really have a need for one, I have not loaded it to a radio, but I did send the file to someone in the event they decide to load it.

The bottom line is Contact Manager makes it quick and painless to move data from one code plug to another even between radios. It was something that I had started thinking about how to accomplish a while back but never got around to. Kudos to Tom on a great piece of software. Be sure to check it out.

Repeater and Talkgroup Infomration

Before my trip to Dayton for Hamvention, I was attempting to program my radio for my trip to Dayton. While, I know what the repeaters in Minnesota are and what talk groups are available on what time slots, I found that getting this information for other repeaters outside of my area was not all that easy. First to just find the repeaters I could use the DMR-MARC Repeater Map and that does list talk group information. Also, I believe in some cases there are links to the repeater/repeater group web sites, but in some cases these locations don’t list much information. does have a location for DMR Talk Groups, but in many of the repeaters I have looked at this information is not filled in. I did find that one of the repeaters in Minnesota does have information filled in, but it is up to the community to fill in this information.

So with all of the repeaters where should the source of this information be and how do we ensure that it is up to date. I don’t know and that is one of the items I am thinking about how to solve. Without being in range of a repeater it is not possible to determine if a talk group is available and what time slot it is on without some form of documentation. Coming back to my trip when I got into the area I discovered that there were additional talk groups on some of the repeaters and when I went to program it, I had to guess which time slot it was on. So after some trial and error I was able to determine the information, but it should not require trial and error to access the system.

The bottom line is who knows what the information is and where should we maintain that documentation, hopefully in a location that is able to be imported into programming software easily.

DMR Radios at Dayton

by brandon 0 Comments

Since I just got back from Dayton, I thought I would take a minute to post an update of what I saw for DRM radios at Dayton.

Wirelessholdings was there showing the the DV4mobile. The unit was running a display loop and to my knowledge was not functional. At this point no price has been announced, they say it should be available in the fourth quarter. I guess we will see what happens.

Connect Systems was there with a board for the CS7000, but at the show it was just the board and was not able to do anything. In talking with them they did say they the were able to get it to boot in the office, but not in time to have it running a display look at the show. They were also showing their new CS720, which is the commercial version of the CS760 that is slated for the a fall release. I don’t have much for details on this radio at this time. Again, we will see what happens as time goes on.

The Motorola SLR-8200 made an appearance at the DMR-MARC booth. The SLR-8200, as I understand is the replacement to the MTR3000.

Well not a new radio there were a few vendors selling the MD-380 for $110 and many of them being sold.

Overall, it was nice to see the new radios that may come out some day as well as the growth of DMR in ham radio.

Welcome to DMRInfo

by brandon 0 Comments

Welcome to DMRInfo, this site is intended as a repository for information and tools about DMR as it relates to Amateur Radio. I am working on some tools to hopefully make programming DMR radios a bit easier. If there is something that you would like to contribute please get in contact with me.