FCC regulations prohibit deliberate interference on all of the radio frequency bands so you have to wonder why the City of Oakland has police radio interference from AT&T 2G cell towers. Granted, the 800 MHz range is pretty crowded but devices certified to operate there are expected to have good control over their transmitted signals. That means suppression of harmonics and giving priority to primary users of a particular frequency. It’s the sort of thing you’d expect to have been detected long before the Oakland system was put into place but it appears to have been skipped.
As a side note, it’s outrageous that Oakland would choose to build its own system rather than join the network that other nearby public service agencies are building. Lack of interoperability between agencies and services was one of the big lessons from 9/11, there’s really no excuse for ignoring those lessons in 2012.
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