Amateur Radio: DMR

Revised 2020-01-28

W2XQNew or updated entries indicated with New or Updated. Labels expire in 30-60 days.

drama-mask And we say…


And note… [ Dynamic, Static, & Auto‑static Talkgroups ] [ Hotspots ] [ Nets ] [ Organizing a Codeplug ] [ Pi-Star 4.1 Release Candidate Problems ] [ Reflectors ] [ Remote Commands ] [ Updating & Upgrading Pi-Star ] [ … and see Notes ]
Current Pi-Star version is 4.1.0 rc7 / 20191220

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Contact Lists
OpenGD77 Project
SWL Fest

beacon Burlington County's first DMR repeater was installed on January 9, 2020. New

  1. Get your amateur radio license…
  2. Want to learn how to get onto DMR? Start by reading…
    1. Amateur Radio Notes by KE0FHS (comprehensive introduction to and reference information, a must read)
    2. And get to the Colorado HD Net (all things digital)
  3. Get/Register a DMR ID
    1. Americas, Asia, Middle East, Oceania et al—everywhere other than Europe and Africa
    2. Europe and Africa
  4. Networks
    1. BrandMeister Network
      1. Brandmeister Explained
      2. BrandMeister News
      3. BrandMeister Talkgroups
      4. Hose Line
        — If your browser fails to produce audio, try another browser. My situation? Chrome fails, but Opera works on Win7 and DuckDuckGo works on Android. It makes no sense.
        — If no browser produces audio it is very likely that the Hose Line server software has failed. The only solution? Check back in the days following. I have never seen a webpage announcement one way or the other.
        — Some links below to lesser known talkgroups are simply to see if there is activity, and may not remain here. So many unused talkgroups, yet more are added each month. Ridiculous. Sigh…
        1. TG 91 Worldwide (Info)
        2. TG 310 TAC 310 (Info)
        3. TG 311 TAC 311 (Info)
        4. TG 310 TAC 312 (Info)
        5. TG 3108 Colorado (Info)
        6. TG 3134 New Jersey (Info)
        7. TG 3142 Pennsylvania (Info)
        8. TG 31012 QuadNet (Info) (QuadNet2 USA IRC Network)
        9. TG 31083 Colorado Severe Weather (Info)
        10. TG 31084 Mountain Skynet (Info)
        11. TG 31088 Colorado HD (Info)
        12. TG 31340 CNJHAM | Central New Jersey Hams (Info) K2IE Multiproticol New
        13. TG 31360 TriState (Info)
        14. TG 31482 South Texas (Info)
        15. TG 31625 The Hangout SPot (Info)
        16. TG 31648 DMR Info Network (Info)
        17. TG 31660 Ocean County (Info)
        18. TG 31672 Pi-Star Chat (Info)
        19. TG 31801 The Gathering Spot (Info)
        20. TG 31802 Chat Lounge (Info)
        21. TG 31803 Secret Talk Group (Info)
        22. TG 98003 Reddit (Info) (KM8V)
      5. Talkgroup Activity Aggregator | K3HEX (Interesting one–page overview) New
      6. Talkgroups (Download CSV etc list using buttons atop page)
      7. CCS7 User Database (search by call or DMR ID)
      8. Digital Communications Interconnect
        1. Talkgroups
      9. Digital Mobile Radio (DMR)
      10. Discovering DMR by KE0FHS
      11. DMR Learning Series by K8JTK
      12. DMR-MARC
        1. Worldwide Talkgroups
      13. DMR For Dummies
      14. Ham Digital
      15. Server Locations in USA
      16. Server Masters
      17. Twitter @BMMasterStatus (monitors status of Brandmeister servers)
    2. HBLink (HBLink provides a suite of programs for building and extending existing networks.)
      2. HBlink for Python3
      3. HBlink Monitoring Server: ColoradoHD.31088
      4. Make Your Own DMR Server
    3. T G I F Network
      1. T G I F through the DMRGATEWAY
      2. T G I F Talkgroups
  5. Contact Lists
    2. DMR Contact List Download
    3. Telegram Contact Lists New
  6. Hotspots
    1. DMRspot
    2. Hotspot Offset Calibration | K9NPX New
    3. Micro–Node Int'l's Nano–Spot
    4. MMDVM Duplex Hotspot | Commswg
    5. NEX-GEN Custom Hotspots
    6. SharkRF Hotspot
    7. ZUMspot & MMDVM Demo Page
    8. ZUMspot Raspberry Pi Info and Setup
    9. ZUMspot— DMR Hotspot
  7. Time Converter
  8. Nets
    1. Sunday
    2. Monday
      1. PAPA DMR Roundtable: TG 3106 (Mon 2000 Pacific time)
    3. Tuesday
      1. Colorado Digital MultiproticolColorado HD Hotspot Discussion Net: TG 31088 (Tue 1930 Mountain time – 2130 Eastern – excellent!)
        1. Colorado HD Net Recordings
        2. Telegram (secure online chat)
        3. TG31088 Net Check-in
        4. Colorado Digital HD Net Resources New
      2. DMR Information Net: TG 31648 (Tue 1930 Central time, net control KC5RJL)
      3. East Coast Reflector Tech & Swap-Shop Net (Tue 2000 Eastern time)
      4. North Star Digital Net: TG 31630 (Tue 2100 Eastern time—DMR news, discussion et al; net control WA2UMP)
    4. Wednesday
    5. Thursday
      1. NJ Emergency Communications Team Net: TG 3134 (Thu 1900 Eastern time— emergency comms purpose; net control K2HES) New
      2. Tidewater (VA) DMR Net: TG 31515 (Thu 2100 Eastern time—DMR news, discussion et al; net control WZ4K)
      3. #redditnet FakeHam LIDNet: TG 98003 (Thu 2130 Eastern time—fun and sometimes silly)
    6. Friday
    7. Saturday
      1. F-troop: TG 505005 (Sat 0000 UTC – general purpose net) (also on AllStar/Echolink)
    8. Lists, Other Sources
      1. KE0FHS: DMR Nets
      2. K4KNJ Ham Radio DMR Nets ( on Telegram)
      3. N8NQP Digital Repeater System Calendar : Nets
      4. NEX-GEN: DMR Nets
      5. Quadnet2 Nets
      6. Rickey: DMR Nets
      7. Sierra Nevada Amateur Radio Society | SNARS : Nets
  9. Pi-Star
    1. BrandMeister API
    2. BrandMeister Talkgroup List
    3. Color Schema
    4. CW ID
      1. Cautionary MMDVM Tale
      2. Pi-Star CW ID
    5. Forum
    6. FCS Reflectors
    7. Github: Andy Taylor (explore the inner workings of Pi-Star)
    8. Pi-Star Users Support Group
    9. Hotspot Interface
    10. Pi-Star Deep Dive (podcast) Streaming audio
    11. Pi-Star Notes by KE0FHS
      1. Changing a hotspot frequency (Avoid satellite frequencies; hotspot may be blocked from operating.)
      2. Expanding the filesystem
      3. Remote commands
      4. SSH Access to Pi-Star
      5. Updating and upgrading Pi-Star
      6. Updating hotspot firmware via Pi-Star
      7. Updating to Pi-Star V4
      8. Pi-Star 4.1 Release Candidate Problems New
    12. Road to the MMDVM Streaming video
    13. Wiki
  10. Radios
    1. Anytone AT-D878UV
      1. Anytone.DE (firmware et al)
      2. Anytone Config Builder
      3. How to Set Up Anytone 878 DMR Roaming Streaming video
      4. Modifications
      5. Modifications, hints, tips and technical information…
    2. Baofeng (alternate)
      1. Baofeng Cheat Sheet
    3. Retevis
    4. TYT MD-380
      1. Scanning (setting up scan lists on 380/390)
    5. TYT MD-UV380
      1. Notes
      2. 60 Days with the TYT MD-UV380 (source: HVDN)
      3. Firmware Update: TYT MD-UV380/390 Update 17.05 (also CPS software) (source: HVDN)
      4. Teardown & Comparison: TYT MD-UV380: Part 1 & Part 2 (source: HVDN)
  11. Raspberry Pi
  12. Reflectors
    1. Colorado Digital Multiprotocol Reflector Gateway #31088
    2. DCI c-Bridge Netwatch – Active Talker & Last Heard List
    3. KC5HWB CBridge 2.0 NetWatch (Home)
    4. Netwatch NJ-TRBO
    5. Pi-Star Multi-Reflector #31672
      1. What is the Pi-Star Multi-Reflector?
    6. XLX Multiproticol Gateway Reflector | KC2IDB
  13. Repeaters
    1. DMR Repeaters, Area List
    2. Frequency (Repeater) Coordinating Councils—USA & Canada
  14. Repeater Networks
    1. K4USD Network
    2. N2JTI NJ-NY-PA DMR Ham Radio Network
    3. N2NSA NY Metro DMR Repeater Network
    4. WR3IRS Interstate Repeater System
  15. Resources
    1. Amateur Radio Guide to Digital Mobile Radio pdf
    2. Basics of DMR Digital Mobile Radio | Radioddity
    3. Codeplugs
    4. CQ DMR Map by EA2CQ
    5. Dealers
      — A select list of dealers, based upon conversations with persons whose opinions I and friends trust, selling DMR radios. The list is not comprehensive. Links are not endorsements. Buyer beware. Your mileage may vary.
      1. Amateur Radio Toys
      2. Bridgecom Systems
      3. Buy Two Way Radios
      4. Connect Systems Inc
      5. Let's Get Ready
      6. Smraza (Raspberry Pi)
    6. DMR Shack | DMR Blog and Review
    7. DMR Shack | DMR to YSF
    8. DMRTexas
    9. First Coast DMR
    10. Ham Radio Concepts Streaming video
    11. Ham Radio 2.0 (more videos) Streaming video
    12. Hotspot—Hardware Network Switch: Brandmeister–DMR Marc
    13. Hudson Valley (NY) Digital Network
    14. Introduction to DMR | Tait Radio Academy (Series of videos; commercial, but useful—have a look) Streaming video
    15. N5AMD's Digital Voice Resource
    16. Reddit: DMR
    17. Powerwerx Software Downloads (radios, USB cable drivers, firmware, DMR contact CSV files, codeplugs)
    18. Roger Clark, Freelance IT Consultant & Developer — OpenGD77 Project
      1. OpenGD77 Forum
        OpenGD77 conversations have mostly moved to the Brandmeister talkgroup 98977.
    19. Using APRS on DMR…
    20. VA2PV Ham Radio Video Playlist Streaming video
    21. Additional Digital Resource Materials
  16. Software
    1. Codeplug; Building a…
      — There are numerous YouTube videos but I prefer the printed word. Your mileage may vary.
      1. DMR Codeplug 1.0.1 | K3NXU
      2. How to Build a Code Plug | K9NPX
    2. Codeplug; Organizing a… Updated
      —Choosing talkgroups and grouping them into zone lists.
    3. Codeplugs; Sample…
      — Codeplugs are enigmas. Whereas it is best to learn to build your own codeplug, looking at samples can help. These repositories may be helpful. Third-party codeplug editors (below) can convert file formats and make global changes.
      — If using a sample codeplug, you may have to change the hotspot simplex frequency to conform to your area's bandplan, cf. USA & Canadian Frequency Coordinators.
      1. Anytone Codeplugs by State (see warning)
      2. Colorado Digital Codeplugs New
      3. DMR at Foxhollow
      4. DMR Starter Codeplugs… | Miklor
      5. DMRTexas National Codeplugs
      6. DMRTexas User-contributed Codeplugs
      7. DMR-Utah Codeplugs
      8. Florida Digital Amateur Radio Network Codeplugs
      9. Hoosier DMR Codeplug Vault
      10. Hudson Valley Digital Network Codeplug Repository
      11. Minnesota DMR Codeplugs
      12. N2JTI NJ-NY-PA & WR3IRS DMR Codeplugs
      13. TYT MD-UV380/390 Basic Codeplug | Parker (CO) Radio Assn New
    4. Codeplug Editors
      — FYI. I haven't evaluated or thoroughly tested all editors. See my notes below. Back up your codeplug file(s) before using an editor. I like, use and support N0GSG's software; recommended.
      1. DMR CPS Programmer by DL5MCC
      2. DMR Config—Command Line Editor (Win/Linux/Mac OS) by KK6ABQ
      3. Editcp—Codeplug Editor by WJ2O (manipulate codeplugs)
      4. N0GSG Contact Manager (manipulate codeplugs)
      5. TYT Codeplug Editor by G6AMU (manipulate codeplugs)
    5. SD Card Tools
      — I suggest using 16gb Class 10 SanDisk or PNY cards. Don't depend upon the cheap no-name cards found in some hotspots, including those from China.
      1. SD Memory Card Formatter
      2. Win32 Disk Imager


[ Brandmeister bans ] [ Brandmeister Wierdness ] [ Codeplug Notes ] [ Duplicate a SD card ] [ Linux Hints & Tips ] [ MD-UV380 Notes ] [ The MMDVM Scrolling Logo ] [ Pi-Star Colors ] [ Sharing a Codeplug ] [ Updating and Upgrading Pi-Star ]

Some notes on the TYT MD-UV380…

Eternally under construction

The MD-UV380 is a mid-2018 dual-band variant of the popular MD-380. Web searches do not yield much information about the radio. In my opinion, the manual could be improved. The following items are notes and observations made since purchasing the radio in July 2018. My radio firmware version is 16.006 and the CPS software is version 1.03. I haven't perceived a need to upgrade either, and I don't recommend upgrading either the firmware or software unless there is a need. At introduction the radio cost ~$140; in late–2019 the price has dropped to ~$80.

[ Back to Notes menu ]

A few notes on the MD-UV380 codeplug manipulation…

Eternally under construction

[ Back to Notes menu ]

A few other notes in no particular order…

Sharing a codeplug

I ran into a problem sharing a codeplug as a Gmail attachment. The recipient of the file reported it was corrupted. The solution was to upload the codeplug file to my Dropbox account and then email a link to share it. Other cloud services—Box, OneDrive et al—should work too.

[ Back to Notes menu ]

Pi-Star Colors

The CSS Tool enables one to play with the total color schema of the Pi-Star software. The combinations are unlimited. Using a comprehensive color table I chose to only change the "border" color…

… from among the following possibilities. See what you think.

Remember to "Apply Changes" to see results. (To return one or a few colors to a default value see this list of default colors.) At the page bottom there is a safety "reset values" to all default colors should your total schema wanders off the rails. Do make a record of your CSS changes as the Pi-Star Configuration > Backup/Restore > Download Configuration ZIP file does not include the color values.

[ Back to Notes menu ]

Make a Full Pi-Star Image File

After upgrading and updating Pi-Star on one hotspot's SD card, I made a second SD card for a second hotspot. The first hotspot worked. The second failed to work. It made no sense; I assumed the SD card was the problem. The solution? (Tip of the hat to WB3EHB for suggesting a solution.) Using two Windows SD utilities:

  1. Use the Disk Imager program to read the first good SD card. Name the file, including the drive letter (and path if desired) and adding the "img" extension. Note the location of the (~15gb) file written to the fixed disk. When done, remove the good SD card and put it back in the hotspot.
  2. Use the SD… Formatter program, format the second SD card.
  3. Use the Disk Imager program to write the file, created in step 1, to the SD card.
  4. Remove the completed SD card and put it in the second hotspot. Power on the second hotspot and open the Dashboard…
    • Adjust, if necessary, the BER values with the Configuration > Expert > MMDVMHost > Modem > RXOffset/TXOffset menus.
    • Increment the Configuration > DMR Configuration > DMR ESSID hotspot number.
    • Optionally change Pi-Star colors to differentiate the hotspots.
    • Make a Pi-Star Configuration > Backup/Restore > Download Configuration backup. Save it with a different name to differentiate the files.

A fringe benefit of this exercise? Making a full SD card image includes all settings and configurations, including those items not saved in a Configuration ZIP file. If you make additional cards for one hotspot, skip step 4.

[ Back to Notes menu ]

Updating and Upgrading Pi-Star

Updating Pi-Star may involve two steps. Moving from version 4.0 to version 4.1 requires downloading a new image file. With 4.1 installed, new release candidate versions—it is always good to run the Update first and Upgrade second—are installed with the Dashboard commands…

The date at the upper right of the Dashboard changes only when there is a significant Pi-Star Update (per KEOFHS: "changes to the Pi-Star dashboard app"). The version number changes whenever there is a Pi-Star Upgrade (per KEOFHS: "operating system-level changes to the system and packages required to support new features").

Alternatively, SSH commandssudo pistar-update (also updates the operating system) followed by sudo pistar-upgrade—may be used for updating and upgrading Pi-Star.

New If you have WiFi AP connectivity issues when starting your hotspot, run a sudo apt-get install rng-tools.

[ Back to Notes menu ]

Pi-Star's scrolling logo, by default, is turned off as of version 4.1.0 rc7 / 20191220. The calls et al continue to be displayed when the talkgroup is active. In the Configuration > Expert > MMDVM Host > OLED section, the default values are now "Type | 3" and the remaining fields are zeros (0's). To turn the scrolling logo back on, change "LogoScreensaver" from 0 to 1. Thanks to Rex, WD0AJG, for sorting out these changes and alerting us to same in the Colorado HD Telegram group.

[ Back to Notes menu ]

Brandmeister bans

Lose your connection to a Brandmeister master server? Too many quick keyups may be the cause. In response to a question in the Telegram Brandmeister General Support (English) forum, W7XM posted the official explanation.

"More than 4 keyups, with 2 seconds or less transmission within 1 Minute is banned for 1 hour on the master the hotspot is connected to."

Updated W7XM continues "…so to clarify it only triggers when using devices (jotspots) like OpenSpot (1,2,3), MMDVM's (simplex mode), DVMega, etc. So some repeaters are using other software and then linking back to Brandmeister. So in that case it sees it as a hotspot and the rules apply."

For more, and a work-around, see User Blocked. pdf

[ Back to Notes menu ]

Linux Hints & Tips New

Pi-Star's SSH Access provides Linux access to controlling the device. The APT (Advanced Package Tool) is a command-line utility to interact with the packaging system. Read Using APT Commands in Linux for the how-to.

[ Back to Notes menu ]

Brandmeister Wierdness New

13 Jan 2020: Interesting situation late night with a simplex hotspot. Talking to friends, at times communications was lost for a few minutes. i looked at the speed, ping and traceroute to see if we could isolate the cause. I opted to use the Pi-Star Configuration to change USA Brandmeister servers from 3103 to 3101.

I have no idea what happened. AC2F wrote "Different master? Each one saves your own set of talkgroups. There are odd things with OS when it switches to 'backup master' you are getting different settings (which you've probably set a month ago on backup master)." I thought my 3103 and 3101 Selfcare settings were alike, but who knows? I know I deliberately never set any static groups. N1AJW wrote "A while back, a year or two, everyone had tg91 as static suddlenly. Same thing, they never put it on." W7XM jokingly says "solar flares…" I tend to believe W7XM's explanation. 🙂

Moral of the story: keep detailed notes on your Pi-Star software and Brandmeister website settings. If you use different servers, keep separate Selfcare notes for each server. And check through your Pi-Star's Configuration for unexpected changes before going back to the Dashboard.

[ Back to Notes menu ]

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