RADIOBEACON TRANSMITTER
ND500II (125 WATTS) DOUBLE SIDEBAND - NO VOICE
Page 1-5
01 November 2003
Table 1-2 Glossary of Terms
TERM
DESCRIPTION
Bit
Basic timing increment derived from master clock in keying
unit. Length is dependent on frame length and number of
characters used. An 8-bit frame is nominally 125
milliseconds long.
Character
Letter or number in the beacon identification signal
Element
Smallest divisible part of a character. May be either a dot or
a dash
Frame
Selected, fixed interval of time that is sufficiently long to
accommodate the beacon identification signal and an interval
of continuous tone. Normally set to 80 bits (10 seconds)
ICAO
International Civil Aviation Organization
