From QRZ.Com, the Icom handout, and Part 97 Of The FCC Rules -
Ham Radio Glossary - An overview of amateur radio terms.

Call Guard
Trademark term by General Electric for sub-audible tone. See CTCSS.

Callsign
Sequence of leter and numbers used to identify amateur radio operators,
and issued by the FCC.

Call sign system
The method used to select a call sign for amateur station over-the-air identification purposes. The call sign systems are:

(i) Sequential call sign system. The call sign is selected by the FCC
from an alphabetized list corresponding to the geographic region of the licensee's mailing address and operator class. The call sign is shown
on the license. The FCC will issue public announcements detailing the procedures of the sequential call sign system.

(ii) Vanity call sign system. The call sign is selected by the FCC
from a list of call signs requested by the licensee. The call sign
is shown on the license. The FCC will issue public announcements
detailing the procedures of the vanity call sign system.

(iii) Special event call sign system. The call sign is selected by
the station licensee from a list of call signs shown on a common
data base coordinated, maintained and disseminated by the amateur
station special event call sign data base coordinators. The call
sign must have the single letter prefix K, N or W, followed by a
single numeral through 9, followed by a single letter A through W
or Y or Z (for example K1A). The special event call sign is
substituted for the call sign shown on the station license grant
while the station is transmitting. The FCC will issue public
announcements detailing the procedures of the special event call
sign system.

CAP
Civil Air Patrol. Volunteer affiliate of the United States Air Force.

Carrier
An unmodulated transmitted signal.

Carrier frequency offset
Distance between mark and space of the carrier for RTTY or similar communications. Also known as carrier shift.

Channel Guard
General Electric's trademarked name for CTCSS. (RCA called it Quiet
Channel, or QC)

CBA
Call Book Address

CBR
Cross Band Repeater. A repeater which receives an incoming signal, and retransmits it in different bands; such as receiving a signal on the 2
meter band, and re-transmits it on the 70 centimeter band.

CC&R's
"Covenents, Conditions, and Restrictions"; an extensive set of rules
drawn up by homeowner's associations and their lawyers which, among
other things, typically restrict or completely prohibit a homeowner
from having most forms of antennas on his/her property. Such
regulations are formed and placed upon the property before the home is initially sold, and typically remains in effect for the life of the home.

CCW
Counter clockwise

CG
See Call Guard.

CH
Channel. Sequence of memory positions where frequency and related
information is stored.

Cl-V
Icom computer control interface allows multiple radio control
simultaneously.

Coax
Coaxial cable; RF transmission line; used to connect an antenna to a
radio; "coaxial" indicates that the conductors are about the same axis,
with a center conductor being on that axis, and the "shield" wrapped
around the axis (dielectric separates the center conductor and the shield wires).

Conversion
Number of IF circuits in the receiver.

CPU
Central Processing Unit. Determines the speed of how fast the computer operates.

CQ
Radio communications term used to call other stations (Seek You).

CTCSS
"Continuous Tone-Coded Squelch System", also known as "PL" ("Private Line", trademarked term by Motorola), "Call Guard" (trademarked by GE), or
"subaudible tone". A means of transmitting a tone along with your signal.
This tone tells a receiver to open up its squelch so that the signal is received. This method is commonly used with repeaters.

CW

1. "Continuous Wave"; popular digital mode on HF which utilizes Morse Code; regarded by many as the *first* digital mode.

2. Clockwise

CW filter
Used to narrow IF passband to improve reception in crowded band
conditions.

Control operator
An amateur operator designated by the licensee of a station to be
responsible for the transmissions from that station to assure compliance
with the FCC Rules.

Control point
The location at which the control operator function is performed.

CSCE
Certificate of successful completion of examination. Issued to an
examinee for an amateur radio license, showing that they passed
a specific examination element required for that particular class of
amateur radio license. They are valid for a 365 day period from
initial issuance toward upgrading to a higher class license. For
example, if one passes an exam on July 1, it expires at 12 midnight
the following June 30. However, during a leap year, the expiration
day is one day EARLIER.

CEPT
Radio-amateur license. A license issued by a country belonging to the
European Conference of Postal and Telecommunications Administrations
(CEPT) that has adopted Recommendation T/R 61-01 (Nice 1985, revised in
Paris 1992, Nicosia 2003).
--- SBBSecho 3.14-Win32
* Origin: The Thunderbolt BBS - Little Rock, Arkansas (316:36/20)