Stock, this radio module is just okay, but with a few modifications, it can be turned into a very good receiver with a spectrum analyzer ... and this is where most RC hobbyists stop.

Each one is a self-contained closed-loop actuator, available across a wide spectrum of price and torque ... They are mechanically similar to the RC hobby servos we all know and love: a gearmotor ...

There's lots to discover in the electromagnetic spectrum. Here's a tour that begins with radio waves and takes you through microwaves, infrared radiation, light, ultraviolet radiation, and X-rays.

(Bloomberg) -- Senate Republicans are considering a massive sale of radio spectrum intended to generate billions of dollars to help pay for President Donald Trump’s agenda and free up airwaves ...

The RC-135V/W Rivet Joint reconnaissance aircraft ... identify and geolocate signals throughout the electromagnetic spectrum. The mission crew can then forward gathered information in a variety ...