Signal original form to a waveform expressed as a current ("I") or a voltage ("V"), or an electromagnetic waveform, for example, an optical signal or radio transmission. Once expressed as an electronic signal, the signal is available for further processing by electrical devices such as electronic amplifiers and electronic filters, and can be transmitted to a remote location by electronic transmitters and received using electronic receivers. In Electrical engineering programs, a class and field of study known as "signals and systems" (S and S) is often seen as the "cut class" for EE careers, and is dreaded by some students as
Signal strength and readability report directly correlate to the signal strength rating. A report format commonly referred to as five by five is often used in media. The report format ostensibly consists of two digits, each ranging from 1 to 5, resulting in 25 possible combinations, with five by five being the best signal possible out of 25 combinations. As no reliable source has been found documenting this format, it may simply be Cold War-era slang, inappropriately mapping the radiotelegraph signal report numbers to radiotelephony signals. Some radio users have inappropriately started using the Circuit Merit telephone line quality measurement. This format is unsuitable for