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…
Antennas 2015 – 2016
In 2015 – 2016 my roof was featured by a Hygain AV-620, reaching multiple meters over the house. But the antenna proved to be the bad buy of the century:…
POCSAG (UK)
POCSAG pagers are still alive, especially for radio amateurs! Some ten years ago a large amateur radio POCSAG network was active in Germany. In PA this phenomena didn’t lift off.…
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…
New start of APRS
For 14 years I was driving through the countryside with my aged Volkswagen Golf. For a radio amateur this car was, just like many cars of that generation, a great…
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…