aliases:
- DMR
tags:
- Type/Tech
- area/tech
- proto
from:
- "[[Radio]]"
related:
contra:
to:
dateCreated: 2024-01-26, 11:00
dateModified: 2024-01-26, 11:02
version: 1
publish: true
Digital mobile radio (DMR) is a digital radio standard for voice and data transmission in non-public radio networks. It was created by the European Telecommunications Standards Institute (ETSI), and is designed to be low-cost and easy to use. DMR, along with P25 phase II and NXDN are the main competitor technologies in achieving 6.25 kHz equivalent bandwidth using the proprietary AMBE+2 vocoder. DMR and P25 II both use two-slot TDMA in a 12.5 kHz channel, while NXDN uses discrete 6.25 kHz channels using frequency division and TETRA uses a four-slot TDMA in a 25 kHz channel. | |
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wikipedia:: Digital mobile radio |
aka:: DMR
DMR hotspots are often based on the open source Multimode Digital Voice Modem, or MMDVM, hardware with firmware developed by Jonathan Naylor.