Alpha 9500 HF - Terminology

Alpha Radio Products
Product Release 1
DOCNUMBER 9500
Document Issue 1, Revision 7
June 2009 Terminology–1
Terminology
Terminology
NOTE: For detailed explanations of the following terms, see various publications including the latest
American Radio Relay League (ARRL) Handbook.
A
AC — Alternating current. Electric current whose
magnitude and direction vary with time.
ALC — Automatic Level Control. Technology
that automatically controls output power.
ampere — Unit of electric current.
ARRL — American Radio Relay League. US
national organization of amateur radio
operators. For more information, go to
www.arrl.org.
AWG — American wire gauge. Standard method
of denoting wire diameter.
B
B1 — Modulation class AB1. Amplifier-circuit
class that provides good linearity in push-pull
configuration.
C
CW — Continuous wave. Electromagnetic wave
of constant amplitude and frequency.
D
dB — Decibel. Logarithmic unit of measure of the
power of sound relative to a reference level.
E
exciter — Radio that provides RF drive for the
ALPHA 9500 to operate.