MMDVM Servers

 

Server Update:  Rexx and Otis are both new and run on the latest software and new servers located in the PNW region and connecting to Kennewick c-Bridge.  This is a substantial improvement over the original servers.  We will update Bridget and Wes soon. West side servers will be the last to be addressed as we have limited time and resources.  Our Talkgroup Picker lists the talkgroups that are available on our MMDVM servers as well as our repeaters.

If you are a member of PNWDigital, please join our MMDVM IO Group.  Only members  will be provided access to our MMDVM servers.  Be sure to include your name, call sign, location and radio ID number(s) in your subscription profile so we know who is requesting access and can set-up credentials..  Peter is an open public MMDVM server but with limited talkgroup deck into our network. 

Members may request server access by Emailing tech@pnwdigital.net.  Please let us know that you are a member, you call sign and any additional information you may wish to share.  The tech team will respond to your request.

If you receive your credentials, please to not share them.  Refer anyone, even a person who you know is a member, to our MMDVM specific IO sub-group page:  www.pnwdigital.net/mmdvm.html (this page).

 

Server Slots Description
Bridget 1 Primary server for network wide use, soon to be upgraded
Otis 1 Oregon server with Oregon specific talkgroup deck
Peter 1 Open to the public server   ///  Credentials: peter.pnwdigital.net, 55555, passwOrd
Rexx 2 Primary 2-slot server, latest build, located in Oregon City, connecting to Kennewick c-Bridge
Suzy 1 Server for areas East of the Cascades, new build connecting to the Kennewick c-Bridge
Wes 1 Server for areas West of the Cascades, to be upgraded
     
Settings Openspots use Connector: Hotspot/MMDVM, Protocol: MMDVM, Do not use DMRPlus settings

 

Historical Information

 

Bridget was our first MMDVM server portal deployed to access the PNWDigital network directly.  We chose to use "people" names to easily distinguish the new servers from our repeater city/site names.  We have since expanded our portals to include other talkgroup decks as well as in-state hosting of our servers by way of a single VM hosting multiple instances of the MMDVM servers.  Our effort now is to perfect and publish this multiplexing approach much the same was we did for W6SS's single instance method.  We are also using groups.io to discuss and update or efforts.

The PNWDigital MMDVM project is a package of programs made up by many smart people who have developed the necessary moving parts.  Vance, W6SS created "ipscbuild", which enabled most anyone to be able to deploy the Python programs without major experience with Linux and Python.  The goal has since been to stack up multiple "Bridgets" (MMDVM-IPSC services) onto a single low cost virtual machine provided by a major data center VPS hosting company.  And doing so in a way that the common man can duplicate it with little experience in Linux and Python.

Our multiple use or stacking of instances was created by Dylan KI7SBI with his implementation of Docker for the multiplexing.  Dylan's first Dockerfile is what we call Suzy, which is our MMDVM server tailored for the east side users (of Washington).  We will ultimately publish the scripting and documentation much the same that W6SS has done with his ipscbuild script.

We also have a public portal (Peter) available for non-Members. Anyone is free to try it out or just use it to test out their MMDVM Client set-ups.  See our MMDVM Matrix to determine which talkgroups are available via Peter.  We have 2 servers for Peter, one in Bremerton and the other in Spokane.

 

PNWDigital's MMDVM servers are now private for our members use only.  We have deployed a public server called Peter for limited use by non-members.

Do NOT release any MMDVM server credentials OTA or otherwise.  Refer members to our Wiki for that information.  Non-members should only have access to Peter which is openly shared on the Web for it's ability to demonstrate our project to interested groups as well as to provide some contact to PNW from the outside on talkgroups that are not otherwise available via Brandmeister.

All portals have DNS addresses available.  Please use them rather than the older IP addresses.  We will be moving the servers around the state and any moves made will be transparent to our users if users use the DNS addresses.

Be sure to put TG 9 in your Rx group for all channels in your zones for the MMDVM server annunciation.

Be sure not to put your hotSpot on any repeater output or input/output frequency as it likely will result in looping and render the server useless and busy out a timeslot on the c-Bridge.  WWARA and our community codeplug now support suggested frequencies (and pairs) for power digital devices such as hotspots.

Typical client devices used on PNWDigital are the "spots"; open, ZUM and Nano or just Google: this for wider MMDVM  information.

 

This particular project is based on the great work of multiple folks going back 4 years or so.  All software is open-sourced and available on GitHub by Cort, N0MJS and his crew of supporters.  Also kudos to and for the fine assistance of Corey N3FE, one of the USA Brandmeister admins who initially shepherded our efforts at PNW DMR.  Also to Vance, W6SS for being the one who coded the installation script (still used by our Dockerfile) and explained how it worked, which is instrumental to enabling Linux neophytes to be able to install and manage their own MMDVM projects.  Dylan KI7SBI, who put this project inside Dockerfiles to enable multiple MMDVM servers to reside on a single VM. and Finally, Albert, WB7AWL who provided the Pi-Star image that supports the MMDVM to IPSC linkage for FM repeaters to connect directly to our c-Bridges.

The partner programs used are:  dmr_utils, dmrlink, hblink and Docker (set-up by KI7SBI)
Running on Debian 8.9/64 at DO SFO as well as well as CoLo'ed machines located in Washington.

 

 Revised: 11/26/2020 11:19

 

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MMDVM Server Locations