Connecting radios all over the world

Mimer RadioServer

When you need to access your devices from several WAN or Internet based dispatchers.
The RadioServer will set up all the TCP connections you need.
Mimer SoftRadio

Using the RadioServer

The Mimer RadioServer is needed in larger systems were TCP is used (usually when running over the Internet). Since the Network Interface only can connect to one dispatcher PC at a time.

(In local systems using UDP to connect, you can have many operators without a server)

The number of connected dispatchers can be expanded by installing a Mimer RadioServer at the base station site.

The server can also be installed at a dispatcher central to distribute radio resources to other dispatchers over the Internet.

This is perfect when you have for example a taxi company with local dispatchers during the day and remote at night, or dispatchers that need to work from home.

Technical

The Mimer RadioServer Mk3 has a capacity of 256 connections each configurable for radio or dispatcher. Like this:

  • 2 radios x 128 operators
  • 4 radios x 64 operators
  • 8 radios x 32 operators
  • 16 radios x 16 operators
  • 32 radios x 8 operators
  • 64 radios x 4 operators
  • 128 radios x 2 operators

The older version had a capacity for 64 connections.

The Mimer RadioServer Mk3 is delivered as a self contained small Linux computer running on 12VDC. It will start by itself if there has been a power failure. It has low power consumption and is easy to install also with power back up.

Virtual Server

Mimer RadioServer is, as standard, delivered pre-installed on a CF-card mounted in a compact industrial x86 computer, as seen to the right.

However, it can also be delivered as an OVF- file to be run on a virtual computer using Oracle Virtual Box. The Virtual box will be set to run a 32-bit Debian Linux machine. The virtual disk will be 2GB in size and allocates 512MB of RAM.

The current virtual machine file has been created and tested using Virtual Box version 5.1.26
It is now also tested for use on VMWARE.

Mimer RadioServer Mk3

Mimer RadioServer Mk3

Dimensions:
200x120x50mm
Plus connectors

Power:
Runs on 12VDC, 3,5A,  through
an adaptor that needs 100-240VAC

Mimer RadioServer, front side

The old Mk2 version of the RadioServer

Technical Issues

We gather technical questions and answers on this page!

Setup instructions can be downloaded from the technical download page.

RadioServer setup window

RadioServer – Web browser setup

Radio Server status window

RadioServer – Web browser status window

Web browser setup menu

The Mimer RadioServer has a web browser based setup interface.

All settings of connected radios, IP addresses etc are easily done through a standard web browser.

There is also a file of old settings so that it easy to revert to a previous setting.

Web browser status window

The Mimer RadioServer has a web browser function were you can connect and see the status of the server.

You just need to browse the IP of the server and it will give you information on connected radios and connected operators.

It will also show if an operator is transmitting.

No changes can be made to the server from this interface, it is “look only”.

High latency and high jitter?

Use our Satellite version of the Radio Server!

Already in the standard version of the Mimer RadioServer, much higher levels of latency and jitter can be handled than in the Network Interface.

For connections with extra demands there is also a special version of the RadioServer that improves this even more. Recommended for users with Satellite connections and/or VPN tunnels.

When using the satellite version you always need a Mimer NetworkRepeater at the dispatch end.

RadioServer / NetworkRepeater

In some cases a NetworkRepeater is the correct choice and not the RadioServer. In some cases you need a combination of both.

Read about the NetworkRepeater here.

Download a description off the differences between Mimer RadioServer and Mimer NetworkRepeater from the Technical Download Page.

System Examples

Showing some different examples where a RadioServer in needed.

System with operators at different sites

Connection with a Mimer RadioServer at the base station site.
The server can handle one or many radios at the same site and many dispatchers at different places.

System with operators at different sites, showing the TCP and UDP connections

Showing two of the radios connection through UDP to the RadioServer and two of the operators connection through TCP to the RadioServer.

Operator in City A talks to a car in City B over DMO

Example with several police stations with their own small systems. They are also connected together through their own WAN. With help of the RadioServers, operators at other police stations can remotely connect to each others radios.

In this case for operating a remote Tetra radio in DMO if the Tetra net does not function.

Mimer RadioServer in satellite mode

Connecting radios ofshore through a satellite link with the help of a Mimer RadioServer .

Mimer RadioServer in satellite mode, showing the IP connections

Showing how the ofshore equipment connect with UDP Unicast to the onshore equipment.

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