NorCal IDAS Systems

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WayneH

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Following my NEXEDGE thread here are the ICOM IDAS systems I've found. If you're familiar with LTR these work off the same principle. There is no control channel, only background data to tell mobiles what's active and what's busy, their channel #s and any free, and transmit beacons. And of course tracking down the less busy channels will be a pain. All are NXDN4800 aka "Very Narrow".

The dominant operator of IDAS in the NorCal area is Signature Wireless. So most of these will be theirs.

Identified channels:
452.50000 Site ?, CH20 (TG:1-39,1-56,1-57) Free:4,6,8,10,12
452.77500 Site 2, CH20
453.01250 Site 4, CH6 Mt Diablo? (TG:1-57:Vallejo Medics; East Bay locations) Free:4,8,9,20
454.20625 Site 4, CH18 (TG1-52:Towing, 1-57:Vallejo Medics) Free:4,8,13,15,16,26,31
461.72500 Site 3, CH08 (TG1-57:Vallejo Medics) Free:2,9,11,17,23
461.85000 Site ?, CH05 (TG5-2) Free:4,8
463.71250 Site 5, CH02 (TG1-52:Towing) Free:1,3
463.98750 Site 27, CH25 (TG1-58) Free:2,4,11,22
464.05000 Site 26, CH17 (TG1-57:Vallejo Medics) Free:7,15,20
464.20000 Site 24, CH11 (TG1-57:Vallejo Medics) Free:4,5,18

Unknowns (generate pulses):
451.8500
452.2750
452.3625
460.7125
460.7625 Maybe same site as .7125
464.36250
464.63750
 
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