When I looked into a making a cheapish broad band receiver, these lost out to the chip sets used for SDR. For an extra couple of bucks I got a USB dongle that tuned 26-1750Mhz versus a bare chip ...

Old infrared remote controls can be a great way to interface with your projects. One of [AnalysIR’s] latest blog posts goes over the simplest way to create an Arduino based IR receiver, makin… ...