RF Concepts LLC PA-77DF User Manual

DOCNUMBER 9500

Document Issue 1.1
February 2010

Page Term–3

RF Concepts, LLC

Alpha 9500 Linear Amplifier User Manual

Product Release 1

Terminology

Milliampere. 10-6 A.

Megahertz. 106 Hz.

Operate.

Printed circuit board. Board that 

mechanically supports and electrically connects 
electronic components.

Phase-shift keying. Digital modulation 

scheme in which information is conveyed by 

changes, or modulations, in the phase of a 
reference signal.

Quadrature-shift keying. Digital 

modulation scheme in which the transmitter is 
on only for the duration of each dot or dash and 

switches to receive between each dot or dash, 
allowing the operator to hear any signal being 
sent.

Radio Corporation of America. Also a 

type of interconnecting plug.

Radio frequency. Frequency within the 

range 3 Hz–300 GHz.

Coaxial cable type.

Root mean square. Statistical measure of 

the magnitude of a varying quantity such as a 
wave.

Radioteletype. Telecommunications 

system consisting of two or more teleprinters 
using radio as the transmission medium.

Single-sideband. Modulation scheme that 

refines upon amplitude modulation.

Slow-scan television. Picture-

transmission method for transmitting and 
receiving static pictures via radio.

Standby. Mode in which an electronic 

appliance is turned off but under power and 
ready to activate on command.

Standing-wave ratio. Ratio of the 

amplitude of a partial standing wave at an 
antinode (maximum) to the amplitude at an