[MilCom] Shaw AFB Trunked Repeater System

[Mac McCormick III]

During a road trip yesterday, I assisted in identifying the system below
as the Shaw AFB TRS.  It is a VHF 9600 baud P25 system.  While I never
was in the immediate area of Shaw AFB, I was able to monitor this system
from approximately the 75 mile marker on I-95 in South Carolina to the
Exit 164/Florence, SC area with average band conditions.  Talkgroup info
is obviously still sketchy, it's hard to determine much on a military
radio system while passing by on a Saturday...


Settings/Frequencies:
-----------------------------
Base Freq:  162.0000       Step:  12.5        Offset:  380

163.4625    Control Channel (9600 baud)
165.0125    Digital Voice
165.1875    Digital Voice
165.2250    Digital Voice
165.4125    Digital Voice
166.0000    Digital Voice
166.2250    Digital Voice

Talkgroups
----------------
19     Fire?
     -FIRE DEPARTMENT wkg RADIO MAINTENANCE
20     unknown
     -ref to personnel not in uniform going to "the 79th side"
21     unknown
25     Police?
     -SHAW wkg DELTA #, references to "the sub-station" (these just
      "sounded" like law enforcement
28    Squadron talkgroup?
     -unid passing aircraft maintenance codes, reference to sending someone
       to "the 79th side" (probably related to similar traffic on TG 20)
34     Tower/Ground Control?
     -BARRIER MAINTENANCE wkg SHAW TOWER
     -unid ref switching runways
42     POL?
     -unid ref "amount needed" for aircraft 907



Mac McCormick                      "Green Comms Suck"
Savannah, GA
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