All reproduced audio recordings were taken by directly mic-ing the speaker of the XTS5000 with the SM58. The file was then replayed and fed into the External Modulation input of the R2670 and done so for all tests. this is about as close as I can get to broadcast quality audio). Since FirstNet squashed the development for Phase 3 (which was focused on mobile data) and Phase 2 (TDMA) operation only applies to trunked systems, C4FM will remain the modulation method for conventional P25 operations.Ī baseline recording was made using a Sure SM58 microphone, recorded at a sample rate of 192 kbps and stored as a WAV file (i.e.See above equipment that I had access to.P25 was chosen as the digital medium to test for several reasons. I own the R2670A and my employer owns the R8000B.Maybe we'll see that in the R9000 ( cough Doyle Wofford Freedom CTE cough). The R8000/8100 does not have encode/decode capability for NXDN and DMR, just store and playback which made it impractical to obtain consistent base audio recordings for comparison.
Motorola r2670 service monitor upgrade#
Motorola r2670 service monitor license#
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