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Digital Radio Systems List?

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sepura

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I am trying to compile a digital radio system types list: Can anyone think of any others?
TETRA
TETRAPOL
P25
OpenSky
Nexedge
Mototurbo
iDEN
IDAS
Provoice
 

mm

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Three other early ones used in public safety etc. are:
1. MOTOROLA ASTRO VSELP
2. and MOTOROLA ASTRO IMBE

Astro not apco which was motorola's early digital foray, it wasn't true APCO 25 compliant but more of a stepping stone to true APCO25 lines.

Astro used 2 different digital vocoders, the early models used the VSELP(vector sum excited linear phase) modulation which wasn't compatible with anything except VSELP radios but later models of the ASTRO lines used the IMBE vocoder which when used in digital conventional mode was decodable by later conventional APCO 25 radios.

Astro digital using the IMBE vocoder was by no means ASTRO 25 compliant however.

The ASTRO trunking was 3600 baud and it was the same as Motorola's analog smartnet and smartzone trunking with ADDED digital voice talkgroups.



And number 3. is an early GE digital voice format called AEGIS:

GE had Aegis which was a digital voice format used on EDACS trunking systems which came about way before pro-voice and around the same time as Motorola's Astro VSELP models in the early to mid 1990's.
 

Raccon

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EDACS
EDACS Provoice
DMR
GoTa

And of course
GSM
UMTS (sometimes called W-CDMA)
IS-95 (cdmaOne)
IS-136 (D-AMPS, sometimes called TDMA)
IS-2000 (CDMA2000)
 
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