The Colorado Scanner Guide Maps SDR Dongle Coverage

Field notes

The page turns receiver bandwidth into a site-planning table for Colorado DTRS scanning. It compares RTL-SDR, AirSpy Mini, and AirSpy R2 configurations, including mixed setups, and labels each result as fitting one receiver, requiring the pair, or remaining out of reach. The visible counts range from 57 sites covered by one 2.4 MHz RTL-SDR to 241 sites fitting one 10.0 MHz AirSpy R2, making the hardware tradeoff legible without requiring the reader to infer it from raw specifications.