Motorola MTM800E
The latest addition to the Tetra-to-Echolink project is a Motorola MTM800E. In this case ‘E’ stands for ‘Enhanced’. Although the front of the radio looks identical to the MTM5400, this…
All clear?
The larger public as well as the authorities know Tetra as ‘the governmental network’, call it ‘C2000’ in the Netherlands or ‘Airwave’ in the UK. That’s the reason why people…
Echolink interface (UK)
After weeks of collecting parts and one Sunday of soldering, drilling and sawing it was ready to go: the echolink interface. The device has been built with the PH0DV interface…
433.6500 MHz Tetra / Echolink node (UK)
The first step of the Tetra / Echolink project has been successfully completed. At 433.6500 MHz the node is available to accept connections via Tetra. Following the PH0DV example a…
Tetra to echolink
Some time ago the block diagram above was the result of an hour thinking and scribbling. Aim is to create an Echolink node via Tetra. In fact it’s not a…
About gateways, repeaters and water
The Motorola MTP700 was one of the first portable Tetra radios for the dutch emergency services. As in many cases also now there were quite some remarks after the radios…
The beginning: Tetra and C2000
Tetra seems to be just another addition to the list of DMR, dPMR and DStar. Just like DMR Tetra originates from the professional user environment. The protocol became known because…