Originally Posted By: Mark_R
I think he's talking about something like these.
www.amazon.com/RTL-SDR-Blog-RTL2832U-Software-Telescopic/dp/B00QFCNNV0


Yep, that is a good example. Also read the blog from the vendor. Then google SDR Radio and look for youtube videos.

I did not include links because they change so fast. However google (or duckduckgo.com) is your friend.

Yes, it has a steep learning curve, but if you have the technical background and interest you will find it to be an amazzzzzzing gadget.
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...........From Nomad.........Been "on the road" since '97