Digital communication — Computerbased
communication modes such as
PSK31, packet radio and HSMM.
Dipole antenna — A wire antenna often
used on the high-frequency amateur
bands.
DSP (Digital signal processing) — A
newer technology that allows software
to replace electronic circuitry.
DX — A ham radio abbreviation for distance
or foreign countries.
DXCC — A popular ARRL award earned
for contacting Amateur Radio operators
in 100 different countries.
DX PacketCluster — A method of informing
hams, via their computers,
about the activities of stations operating
from unusual locations.
DXpedition — A trip to an unusual location,
such as an uninhabited island or
other geographical or political entity
which has few, if any, Amateur Radio
operators, where hams operate while
visiting. DXpeditions provide soughtafter
contacts for hams who are anxious
to have a radio contact with someone in
a rare location.
Elmer — A traditional term for someone
who enjoys helping newcomers get
started in ham radio. A mentor.
Emergency communication — Amateur
Radio communication that take place
during a situation where there is danger
to lives or property.
External RF power amplifier — A device
capable of increasing power output
when used in conjunction with, but
not an integral part of, a transmitter.
External RF power amplifier kit — A
number of electronic parts, which,
when assembled, is an external RF
power amplifier, even if additional
parts are required to complete assembly.
FCC (Federal Communications Commission)— The government agency
that regulates Amateur Radio in the US.
Field & Educational Services (F&ES)— Staff at ARRL Headquarters that helps
newcomers get started in ham radio and
supports hams who help newcomers.
Field Day — A popular Amateur Radio
activity during which hams set up radio
stations outdoors and away from electrical
service to simulate emergencies.
Field Organization — A cadre of ARRL
volunteers who perform various ser vices for the Amateur Radio community
at the local and state level.
