Antennas are structures or devices used to collect or radiate electromagnetic waves.

RF amplifiers are devices that accept a varying input signal and produce an output signal that varies in the same way, but with larger amplitude.

Wireless systems consist of combined RF components such as transmitters, receivers, transceivers, filters, down / up converters, antennas and antenna positioners.

Duct heaters are used to heat moving gas streams.

Signal conditioning products provide amplification, filtering, converting, and other processes required to make sensor output suitable for reading by computer boards.

Speakers produce and transmit sounds carried by electrical or radio signals.

Audio amplifiers and preamplifiers are units that amplify a sound signal, which is then sent to a speaker or another amplifier.