Lots.How True! I wonder how many trillion $ to convert CHP to UHF P25?
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They've looked at doing 700MHz P25 in urban areas, and they could actually be doing it in some places. I know one of my high sites was being considered for CHP 700MHz, but it didn't work out.
It'd be idiotic for them to even try. They'd never get the coverage they have now.
CalTrans is moving away from low band (they were another huge user) and going to 800MHz. The number of 800MHz conventional sites they've had to install is silly, and they still don't have the same coverage.
City of San Francisco has kept some of their low band gear. Last time I looked in one of their cars, they had an old MaxTrac low band radio in it.
San Francisco water company still uses low band for their stuff. They get a lot of their water supply from the Sierras, so almost 200 miles of pipeline to get it. They rely on low band coverage for their guys working out there, but are looking at UHF for their closer in stuff. Kenwood was bidding on their system, and they saw the only way to do what they want, and keep the price reasonable, was to keep low band for the pipeline stuff and use UHF (I think it was UHF) for the plants and stuff around SF.
I'd still like to get myself a low band pair and set up a repeater on one of my high sights and see what she'd do. Maybe some day I will.