So in basic terms, one could expect they would have talk groups assigned to them similar to MontCo? As for County o County mutual aide interops, is is safe to assume that those provisions would be done with the National I Tac simplex frequencies?
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Our plans for interoperability are actually quite extensive.
All subscriber units will be programmed with the 700 and 800 non-federal interops, so, as you note, a locally negotiated use of simplex channels by responders working in a mutual aid situation is always a possibility.
However, we are also deploying simulcast interop overlays with 95/95 portable on street coverage countywide. The intention is that out of county userts coming to a Berks home game to help should not need to invest in system radios, but by simply ensuring their radios are programmed properly, have comms with our communication center as well as our subscribers. Each of these overlay channels will be permanently patched to a 700 TG on our system so there should be effective communication between a Berks user with a 700 MHZ portable and an out of county user with one of their home portables as long as both are within our Rf cloud.
Further, for an extended mutual aid operation, we can initiate a temporary patch between the 700 TG that emulates one of the overlay channels and the designated operational talkgroup for the incident at hand.
These overlays will exist as follows:
• VHF low low cut 33.94 (note that this channel is not the non-federal interop, but is a currently Berks licensed channel)
• VHF low high cut – 45.88 – this handles Schuylkill fire users
• VHF high – VCall, VTac1, 155.295, 155.070 – handles Lehigh, Lancaster legacy, Schuylkill non-fire (again, note a mix of interops and currently licensed Berks channels to ease transition)
• UHF – UCall, two of the UTacs (can’t remember which ATM) – handles Lebanon and new Lancaster
• 800 – Originally this was to be a Call and three tacs for Chester and Montgomery interop. However, due to both county’s not be fully rebanded, we needed to rethink and are now planning to deploy 8Call, iCall, and one of each tac. This will limit capacity for simultaneous operations out of the gate but considering rebanding is still underway, we don’t see an option. Once rebanding is not a concern, we will reprogram the pre-rebanding repeaters and get to our call and three tacs.
This was a huge commitment for my bosses, but they took the time to really understand the position Berks is in with counties surrounding us in every piece of the radio spectrum, and the need for us to facilitate a system that permits the technological interaction of these emergency responders on a day to day basis. It was an evolutionary process to get them to understand that interoperability can be needed due to a 9/11 scenario, but that the real need is every hour of every day where we have responders coming to help on much more minor incidents. While it is not the same density of coverage as we have designed for the 700 system, 95/95 portable is (in my opinion) a great coverage density for people to expect in a system designed to handle mutual aid responders.
While not nearly the ease and convenience available by investing in Berks system radios, I think this is going to facilitate a great deal of comm. interop for the people we serve. Last thought, lots of technology laid out, but as we know it all comes down to policy and people (training). That chapter is still to be written.