Remote control allows the location of the control point (typically the main studio) away from the transmitter site. The rules state that “The remote control system must provide sufficient transmission ...

This series of projects explore concepts of radio communications. We use LEDs to generate (very high frequency) radio waves and photo-resistors to take the place of radio antennas. These ideas are ...

Using an EH4104R single zone fire RF receiver with relays and an EH1115EOL single input fire RF transmitter, a wireless link can be easily created for any fire switch with standard contacts.

We may not to able to make a mobile phone system but our very own radio station with a transmitter and receiver might just be possible. What is a transmitter? Radio can be incredibly simple.

AM radios are relatively simple devices, and building one is a good way to start exploring the world of radio communications. [GreatScott] does exactly this in the video after the break, building b… ...

Cell phone coverage can be spotty. Enter Pocket FM, a portable FM transmitter the size of a shoebox that starts working as soon as it’s connected to a small antenna, a power source, and an audio ...