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The AMBE+2 vocoder has also been selected for use in the Motorola MOTOTRBO radio family as well as DMR systems, and Project 25 (P25) mobile radio system. The following reports and papers are descriptions of laboratory-environment evaluations of AMBE+2 and other speech vocoders.
Kaczmarski, having experimented with TETRA and DMR, decided to create a completely non-proprietary protocol and named it after the club's street address - Mokotowska 17. As every part of the protocol was intended to be open source, Codec 2, released under the GNU LGPL 2.1 license, was chosen as the speech encoder.
Like other commercial digital modes (P25, TETRA, DMR, dPMR, NXDN, System Fusion), D-STAR uses a closed-source proprietary voice codec that's patented by Digital Voice Systems, Inc. (DVSI) [16] because it was the highest quality and only codec available in silicon when the system was released. Amateur radio operators do not have access to the ...
The IMI Tavor TAR-21 and the IMI Galil chambered for the 7.62 NATO round are issued to units of the Special Forces of India as a DMR. The SIG Sauer SIG716i chambered for the 7.62 NATO Round are issued for the frontline units of the Indian Army as a battle rifle/DMR. Indonesia: The Pindad SS2-V4 is a designated marksman rifle said to be used by ...