DJ0WH

Analogue: What is flat audio and emphasis?

In the early days of two-way radio, it was discovered that it is possible to reduce the RF bandwidth required, yet transmit readable voic...

The MTS1 is a self-contained; small form factor, rugged TETRA base station that can be installed indoors or outdoors (IP66); on a pole or ...

The above diagram (not to scale) shows a simple radio system, consisting of a repeater located on top of a building (X) and several portab...

The cause(s) why OTAP wont work could be anything. In cases like this, your first port of call should always be whoever sold you the sys...

When a MOTOTRBO radio behaves abnormally, it's sometimes difficult to determine whether there is a hardware or configuration problem....

Adding the PSK to a radio in CPS/RM This feature provides additional data security on the USB or IP link, between a radio or repeater an...