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

FAA
Federal Aviation Administration.

Fading
Signal reduction due to atmospherics.

FB
"Fine Business"; cheerful acknowledgement, or adjective for describing a
good quality.

FCC
Federal Communications Commission. The U.S. Government entity that issues broadcast licenses for the U.S. and its territories. These include radio
and television stations, and amateur radio operators, among others. It
also prepares and enforces regulations for the appropriate broadcast
spectrum.

Field Day
A once a year contest sponsored by the ARRL where hams go to remote sites
and operate for 24 hours. Used to assist hams in emergency preparedness
as well and to practice not sleeping, treating insect and other vermin
bites and the drinking of cold coffee and the ever present telling of lies. Great fun for all! (thanks to WD5CTQ)

Filter
A circut designed to pass only the desired frequency or frequencies.

Fist
The sending style of a particular CW operator. In the old days,
telegraphers knew each other by their "fists" (thanks to WD5CTQ).

FM

1. Frequency Modulation

2. FM Broadcast

FOC
"First Class CW Operators' Club"; an exclusive CW club based out of the
United Kingdom.

Frequency coordinator
An entity, recognized in a local or regional area by amateur operators
whose stations are eligible to be auxiliary or repeater stations, that recommends transmit/receive channels and associated operating and
technical parameters for such stations in order to avoid or minimize
potential interference.

FSK
Frequency Shift Keying

FSTV
Fast Scan TV. Graphics (and audio) communication using TV broadcast
signals. A wide bandwidth is required.

Full duplex
An operation mode, which transmits and receives on different frequencies
at the same time, as a telephone communication.
--- SBBSecho 3.20-Win32
* Origin: The Thunderbolt BBS - Little Rock, Arkansas (1:2320/33)