However, P25 can unscramble trunked radio calls intercepted by a cheap SDR dongle and let you listen ... or Linux and you can see the video below. Trunking radio makes sense.
This is easily in the reach of dedicated software defined radios (SDR). However, [Luke] wanted to use cheap RTL-SDRs and their bandwidth is about 2 MHz. The obvious hacker solution? Use three of them!
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