Radio electronics

oscillator whose frequency can be tuned over some range

a combined receiver and transmitter that retransmits signals, extending their range

equipment used in testing of radio frequency circuits

device used for measuring the input impedance of antenna systems in radio electronics applications

Type of radio design

device that gathers signals over a range of uplink frequencies and re-transmits them on a different set of downlink frequencies to receivers on Earth

Component for guiding radio waves

measure used to quantify the performance of a digital radio transmitter or receiver

device used to measure the wavelength of radio waves

variety of spark transmitter

radio receiver design in which the same amplifier is used to amplify radio frequencies and audio signal

Type of electronic test equipment

electronic instrument used to measure the frequency of radio waves

magnetic radio wave detector

RF signal splitter with special properties

early radio receiver component

signal strength received by a mobile phone from a cellular network

device in signal processing

type of bi-directional amplifier

KeeLoq is a proprietary hardware-dedicated block cipher that uses a non-linear feedback shift register (NLFSR). The uni-directional command transfer protocol was designed by Frederick Bruwer of Nanoteq (Pty) Ltd., the cryptographic algorithm was created by Gideon Kuhn at the University of Pretoria, and the silicon implementation was by Willem Smit at Nanoteq (Pty) Ltd (South Africa) in the mid-1980s. KeeLoq was sold to Microchip Technology Inc in 1995 for $10 million. It is used in 'hopping code' encoders and decoders such as NTQ105/106/115/125D/129D, HCS101/2XX/3XX/4XX/5XX and MCS31X2. KeeLoq

type of RF antenna; shaped as a two-arm spiral; first described in 1956

type of radio antenna

changing keyless entry code for extra security

device used as a substitute for a ground connection in a radio antenna system

circuit for shortwave receivers to improve reception

in signal transmission

the transmitter power output as received by a reference antenna at a distance from the transmitting antenna

ECE Rec. 70-03 for license-free low-power radio devices

measure to quantify the performance of a digital radio transmitter or receiver in a communications system using digital modulation