Beginners Quick Guide | The Basics of DMR Digital Mobile ... - Radioddity
https://www.radioddity.com/blogs/all/beginners-quick-guide-the-basics-of-dmr-digital-mobile-radio
WEBTier 1: The simplest form of DMR is Tier 1, which is mainly used for simplex communications, with no repeaters. The human voice is digitally sampled and compressed with the AMBE+2 codec, and then transmitted in this digital form to another radio. Tier 2: Things start to get a bit more complicated here.
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