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@er1n@phooky I'm curious too, although looking closer at the keypad and what appears to be a repurposed PC PSU being used to supply it with DC voltage I'm guessing at it possibly being a mobile data terminal recovered out of a van/trunk (could be either civillian or public service agency) that would have sent data over VHF/UHF radio frequencies..
@vfrmedia@er1n it's actually getting 12V from my bench supply; the giant PSU you see is being used to prop it up so I could get at the DB9 serial connectors underneath. :)