Yes, they can monitor and decipher.
Chances are, the building you're in has a metal roof. This will block almost all radio transmissions.
A portable radio is able to pick up typical AM and FM signals given by over the air radio broadcast stations. An example of this type of radio is the boombox. The amount or number of signals/channels the radio receives is dependent on location and the type of radio.
The optional transmissions were the Powerglide, the Turbo-Hydramatic 350 and 400.
No, humans cannot pick up radio signals naturally.
No, not under normal circumstances do RF devices cause headaches. Radio frequencies are all around you at any given moment in time. Standard devices that you use everyday such as a radio (car, home, or walkman) or cordless phone pick up and use these radio transmissions.
antenna
You Can't, You Fool
Yes, amplifiers can pick up radio signals if they are designed to do so and are connected to an antenna.
No, radio antennas only pick up electromagnetic waves. Ultrasound is mechanical pressure waves, you need a microphone to pick them up.
SETI (Search For Extra Terrestrial intelligence) broadcasts radio frequencies that are clear they are from intelligent life forms. So if a civilization were to pick it up they know its not random.
You make your sim look at the micrspcope until the aliens pick up he/she and later the sim will become pregnant.
No, it is not possible to pick up radio signals from the past using any technology available today.