Connecting radios all over the world

Jotron TR7750C - FM Marineband Radio

Jotron TR7750 - AM Airband Radio

We have two alternative solutions that both gives you remote control of your Jotron radio in a local LAN and/or over the Internet.

As with all other SoftRadio you can operate several radios from one dispatcher and each radio can be operated from several dispatchers. Each dispatcher can also use other types of radios in a mix.

For the older model, Jotron TR7550, see below.

If you have no need of channel change etc, you can always use one of our universal interfaces with only audio and PTT functions.

Alternative 1: Remote control with a standard Network Interface

For the radio types above we have a Network Interface that connects locally to the radio and gives the operator a Virtual Control Head.

On SoftRadio and the Virtual Control Head you will find the following functions:

  • Remote audio and PTT
  • Channel change, both up/down and number entry
  • Squelch on/off
  • Squelch tuning

The radio can simultaneously be used both from Mimer SoftRadio and be used local with a service handset or microphone and speaker.

For DSC functions see this page: Marine Calls

Connections are made in the back of the Rx and Tx units and the network interface can be installed inside the rack unit with a bracket.

Network Interface: 3009/37
CableKit: 3179
Bracket: 3106

Network Interface installed inside a Jotron radio

Network Interface installed inside the TR7750C

Alternative 2: Remote control via ED137* and a Virtual Network Interface

We also have a solution that uses the radios (optional) built in ED137* in combination with Jotrons own remote control protocol. In this solution there is no hardware Network Interface installed at the radio. Instead there is a software based Virtual Network Interface installed on a windows server computer or on the operators computer. This Virtual Interface does not need to be placed near the radio but can be placed in any convenient location where there is IP access to the radio and the operator.

Just as with the standard hardware network interfaces, many operators can connect to the same radio and many radios can be used in parallel. And the operator will get the same GUI with a Virtual Control Head for channel change etc.

On SoftRadio and the Virtual Control Head you will find the following functions:

  • Remote audio and PTT
  • Channel change, both up/down and number entry
  • Squelch on/off
  • Squelch tuning

The radio can simultaneously be used both from Mimer SoftRadio and be used local with a service handset or microphone and speaker.

For DSC functions see this page: Marine Calls

Connections are made through the receiver and transmitters IP connections.

Virtual Network Interface: 3202

When using the ED137 version of remote control, an engineering menu can be accessed on the server PC that gives the same functions as the front panels of the receiver and transmitter themselves. This is not meant for use at the dispatcher.

Virtual Network Interface for Jotron

Examples of use:

  • Local use when several dispatchers want to share one radio
  • Remote use where a dispatcher at one location wants to talk to radio users at another location
  • Cross patch between analogue radio and other analogue radio or digital two way radio, like DMR or Tetra
  • Cross patch between VHF/UHF or AM/FM

Current supported radio models:

  • TR7750
  • TR7750C

Old supported radio models:

  • TR7550

The interface for this radio type offers change of channel from five preset channels in the transciever.

JOTRON TR-7550
Virtual Control Head, Jotron TR7550
Mimer SoftRadio

A brochure can be found on the download page

Jotron Marine Radio

Virtual Control Head, Marine radio

Jotron Marine Radio

Squelch setting on Marine radio

Virtual Control Head, Jotron Airband Radio

Virtual Control Head, Airband radio

Jotron Marine Radio

Alternative black display layout

* ED137 is a defacto standard for sending audio and PTT over IP, mainly used in Air Traffic Control environments.
The protocol is based on SIP and RTP. The protocol has no built in functions for channel change or other more advanced functions. This needs to be handled by proprietary protocols from each manufacturer.

System examples:

One operator working with one radio

One radio remote controlled by one operator

Virtual Control Head Functions

Virtual Control Head Functions

Jotron and Tetra remote controled

Two Jotron radios and one Tetra radio
remote controlled by two operators

Two Jotron radios remote controlled through Virtual Network Interfaces and ED137

Two Jotron radios remote controlled by three operators through ED137 and Virtual Network Interfaces

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