## Electronics (Mike Jaroch)

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## RADIATION RESISTANCEThe resistance that if inserted in place of the antenna would consume the same amount of power as that radiated by the antenna [10]. | ||

## RADIO COMMUNICATIONSThe term describing teletypewriter, voice, telegraphic, and facsimile communications. [17]. | ||

## RADIO FREQUENCY CARRIER SHIFTThe system that uses a keyer to shift a radio frequency signal above or below an assigned frequency. These shifts correspond to marks and spaces [17]. | ||

## RADIO HORIZONThe boundary beyond the natural horizon in which radio waves cannot be propagated over the earth's surface [10]. | ||

## RADIO SET CONTROL UNITEquipment used to remotely control certain transmitter and receiver functions [17]. | ||

## RADIO WAVES(1) A form of radiant energy that can neither be seen nor felt. (2) An electromagnetic wave that is generated by a transmitter [10]. | ||

## RADIXAlso called the base. The number of distinct symbols used in a number system. For example, since the decimal number system uses ten symbols (0, 1, 2, 3, 4, 5, 6, 7, 8, 9), the radix is 10. In the binary number system, the radix is 2 because it uses only two symbols (0, 1) [13]. | ||

## RADIX POINTAlso called BINARY POINT, OCTAL POINT, DECIMAL POINT, and so forth, depending on the number system [13]. | ||

## RANGEThe length of a straight line between a radar set and a target [11] [18]. | ||