What are some portable devices I could use for testing antennas? I like to do antenna testing outside up on a big hill behind me that has access to power but no internet. Normally I bring an LG monitor/tv that has an atsc tuner and plug the antenna into it to see signal strengths, but it's awkward and not very portable for moving up/down the hill. Next time I'm going to bring an hdhomerun and an old router, and check the signals on my phone with the Signal GH ios app: https://genhelp.com/apps/signalgh.html. Maybe an unnecessarily complex setup, but I can at least carry all those devices in a small bag while also carrying the antenna at the same time. What are some other methods?