Illustrated International Ham Radio Dictionary: Over 1500 radio terms explained! by Parker Peter

Author:Parker, Peter [Parker, Peter]
Language: eng
Format: azw3, epub
Published: 2020-06-09T16:00:00+00:00

MFJ : US manufacturer and distributor of antennas and accessories for the amateur. http://mfjenterprises.com

Mica capacitor : An old-fashioned non-polarised capacitor used in applications where low values of capacitance are required such as in radio circuitry. High voltage ratings make them suitable for RF power amplifiers. A variant is silver mica which is good for critical, frequency-sensitive applications. Typical values are 10 pF to 1 nF.

Mica washer : A clear electrically insulating washer typically mounted between a power transistor and its heatsink. This allows thermal conductivity but electrical insulation between the component and its heat sink.

Microcontroller : A basic computer, often on a small circuit board, that can be programmed to read inputs, generate signals and control electronic circuits.

Microprocessor : An IC that contains all the parts of a computer’s central processing unit.

Microphone : The transducer you speak in to when talking on a transmitter.

Microphone amplifier : A stage in a transmitter than amplifies the sound input from the microphone to a level sufficient for subsequent stages.

Microphone gain : A setting that determines the gain of the microphone amplifier. Too low a setting results in you not being heard while too high a setting causes transmission of extraneous noise.

Micro : x10-6 . One millionth. E.g. microfarad (uF) or microhenry (uH).

Microsat : A small, often low earth orbiting, artificial satellite typically weighing under 100kg.

Microswitch : A small momentary switch often controlled by a lever such as common in electromechanical devices such as CD players and video tape recorders.

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