I have a couple of those, but unitrunker only runs in Windows, and I’d hate to run Windows just for that.

Don't you need at least 2 to track trunked systems?

It is helpful, but not necessary. I am listening in on Seattle's trunked radio system with just one, and I get most of the comms.

I documented my setup here: https://dantler.us/seattle-police-scanner/

Please consider streaming on https://openmhz.com/

You need two rtl-sdr, but one hack-rf can grab enough of the spectrum that only one is required. One of the benefits of p25 is that it's very spectrum efficient so I get all 18 channels.

Ah the bandwidth isn't something I'd considered. That's a good point. Unfortunately for me the KCERS Seattle site's total bandwidth is about 6.5 mhz. I have a RTL-SDR and a SDRPlay but it seems like the only thing that can talk to the SDRPlay is their own software.

https://www.radioreference.com/apps/db/?sid=604