... while the LIDs on the P25 side include '512' as a prefix, called a "region code".
I wondered if that's what the 512 was for... so should we also expect some 979s (Brazos County down to Matagorda County)?
To "talk across" systems using ICall, the region code must be used. All radios on both systems will have the same last four digits, they aren't supposed to repeat.
Are you saying that they might be using radios capable of transmitting in both bands? Not just two different radios? I was wondering if they were using some new radios for this... Neither of the 3- Harris Unity, Thales Liberty, Motorola APX7000, incorporate the 900MHz band into the radio (since it isn't the "public safety" band). I wonder which radio it could be? I just figured they had some new 700/800MHz capable radios as well as the older 900MHz LPE-200s that I see the LCRA subscribers using.