GB3JB - 2m Analogue FM - RV63 - 145.7875 Mhz - 145.1875 Mhz - 103.5 hz ctcss.
GB7JB - 70cm DMR - DVU37 - 439.4625 Mhz - 430.4625 Mhz - Colour Code 1 - Slot 1 "Local" TG9 - Slot 2 "SW Cluster" TG950

DMR Technology

From a technical standpoint, the DMR TDMA system offers a significant advantage.

This being that each repeater is actually TWO repeaters in ONE.

The following image draws a comparison between the typical Analogue FM signal and a TDMA DMR signal.

The obvious difference is that the DMR signal is split up into sections, or SLOTS. Each slot will be carrying a different and totally independent communication.

The slots are also interleaved.

Image showing the Analogue FM vs TDMA comparison.

Image showing the TDMA vs FDMA comparison.

Image showing TDMA audio recovery vs Analogue FM

This page is still under construction, and it's content and layout may well change without notice and in due course..