RT97 Portable Repeater Basic Introduction
Retevis RT97 is a portable analog repeater. It is a bas […]
How to Customize the Frequency of Retevis RT97?
Most of repeater has its own center frequency point. It
How to extend the radio communiction distance?
In general, radio waves travel in straight lines. They
Retevis RT90 Dual Band DMR Mobile Radio Review
Retevis RT90 Review by ham Mattew Bamber callsign m6ceb
