This primer explains the basics of RF signals, helps readers understand the time and frequency domains, and introduces common RF measurement instrumentation and measurement techniques. Oscilloscopes, spectrum analyzers, signal sources and a wide range of instrumentation testing receivers, attenuators, preamplifiers, mixers and oscillators, as well as additional components like transmitter and receiver tests are discussed. It also reviews the basics of electromagnetic radiation, the electromagnetic spectrum and a range of EMC pre-compliance test procedures including radiated and conducted emissions tests and immunity/susceptibility testing.