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It put together a SDR system & website that lets you listen to all of the talkgroups on the DC FD, EMS & City Services trunking system. It monitors the SmartNet system at ~856MHz.

The site is at: http://openmhz.com

I have a writeup on it here: Using a HackRF to Capture an Entire Radio System — Luke Berndt

I want to try and make this as useful as possible to people. Let me know if you have ideas on what would make it better!