DMR-MARC Smashes N0GSG Contact Manager

August 9, 2018 - by dmrfordummies.com by af1hs.com What is DMR? DMR stands for Digital Mobile Radio and uses the Motorola TRBO protocol for communications. Like other digital modes such as D-Star, C4FM and APCO P25, the TRBO protocol converts your voice into a digital form and sends it out via RF (with other bits of information included) and allows you to communicate to other DMR radios and also DMR repeaters, which are networked together around the world via the internet. What makes DMR stand out from some of the other digital modes is that it utilizes TDMA (Time-Division Multiple Access) to divide a single frequency into 2 distinct “channels” or time slots. By doing this, you can have two conversations going on at the SAME TIME, using one frequency.

DMR-MARC And The Radio ID Database

August 6, 2018 - by dmrfordummies.com The Motorola Amateur Radio Club World Wide Network has been in existence for many years. MARC was the first organization to get a foothold in the amateur radio world and as such, has become the defacto owner of radio and repeater DMR IDs. The DMR-MARC network started out as a 100% Motorola equipment repeater network and has since grown to include a few other brands as well. However anything not Motorola may suffer a few shortcomings with functionality. You can find out much more about DMR-MARC and its history here. Essentially, as the founding fathers of DMR in amateur radio, MARC has become the owner and manager of the worldwide Radio ID and Repeater ID database that all DMR users should be registered with.

Why Walkie Talkies?Two Way Radio Vs Mobile Phones

Mobile phones are superb general purpose communication tools - convenient, packed with features and different connectivity options, and near enough universal in terms of where you can use them and who you can contact. But for mission critical communications, when you absolutely have to get through, are they absolutely reliable?

Motorola LEX L11