About

We ( My Coders and me Andreas as the owner ) started with basic Messaging Functionalities over 10 Years ago with a Java Desktop Application. Over the Years we added a Webversion using Angular and added an Android Application inside the Android Store. All these Basic Messaging Application –  have a Phonebook for ISSI or GSSI Numbers. You can define your own Pre Select Pattern and you define the Status Meaning  as well as the Hex Value according to your needs. These Basic Messaging Skills for Text and Status  are called Lite Version.

We built several Versions. The Webversion, Android App or our most used Java Desktop Application that connects to the Cassidian Radio Terminal. Our LAN-SDS Application offers you the possibility to connect to your TETRA Radio Terminal from remote or inside the LAN. We use Java on the Receiver Radio Terminals well. We use the Java MIDP Apps for our Picture Application that offer our SQL-SDS Feature as well.  You can think about Ping-Pong. Send a Message and you will receive a up to date Database Information. The Minimum Setup is only one EADS/ or Cassidian or Airbus Radio Terminal to to so.

If you want to use the SQL-SDS ( that is realized by a Text File or Database Base Solution) you can use our LAN-SDS Java Application with TEA1 and TEA2 Motorola or Sepura Radio Terminals or TEA1  Hytera Industry Tetra Radio Terminals.

So for the other Radio Terminal Vendors. We make it simple so you just have to insert a # in front of your Text Message that represents a Database Search Entry / Match Pattern inside our Java Logic – So just send a message as like #helloworld towards the LAN-SDS ISSI Number and you will receive an up to date Message returned to you in a second. Why because on you on Application Side you can update the File or Database Entry in a second if needed..

We built a Firewall ISSI Subfeature that you can choose inside the Menu. So you can add or block users or TETRA ISSI Ranges.

For the Full Version we added unique Features and enhanced these Features over the Years. BOS and Industry Customer are different. For the Industry we built Features as like Twitter Message and Bidirectional-Telegram to TETRA Feature. For Authorities these are bit more Special that is why an optimized TEA2 Full Version was created.  Our Applicatins have been tested successfully inside the BOS Network where we have the Opportunity to use the Network because of Software Developer Program with our local Authoritiesierte Stelle.

You will see that is it a bit of effort to write a Status or Text Message on your Handheld or Carkit Radio Terminal. That is why you can run LAN-SDS on a Computer and just open the Java Application to do so. You will have your own Control Station where you can send Messages in a second and all incoming and outgoing Messages are saved. As well we care about the Acknowledgments so you can see the Message arrived or not.  We built a optimized P8GR Version because the Pager has some limited AT Command Set but has enhanced Features more Altering. So we coded a own Subversion. Nevertheless you will see that all Lite Versions have the same Feature Set.  Of course all Features inside the Lite Version are available in the Full Version, too.

 Allgemeinzuteilung: Funkamateure dürfen das dem DARC zugeteilten 70cm Band bzw. die jeweiligen Bündelfunknetzfrequenzen und somit auch on top laut Allgemeinzuteilung die allgemein verfügbaren zugeteilten Frequenzen nutzen.  

Mittenfrequenz in MHz  | Maximale äquivalente Strahlungsleistung (ERP) in Watt | Kanalbandbreite in kHz
420,00000 1,0 12,5
419,99375 2,0 25,0

Bundesnetzagentur – Allgemeinzuteilungen

Allgemeinzuteilung Bündelfunknetze (Vfg.36/2026)

Allgemeinzuteilung 421 & 422

Bandpläne – DARC 430-440 MHz

UHF_Bandplan_70_cm_Mai_2025.pdf

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