TM ll-5895-1412-12&P
REFERENCE INFORMATION (CONT’D)
I
COSITE PLAN - Provides frequency separation from 0.5 to 5 MHz so that nets in
close proximity can communicate simultaneously without mutual interference.
CUE FREQUENCY - A frequency used to bring a user into a net. The frequency is
in the range of 30.000 MHz to 87.975 MHZ and is divisible by .025 MHz.
DATA TRANSFER DEVICE (DTD) - A small hand-held computer which will be used for
the storage and transfer of BGU-generated items; callsigns, frequency
assignments, SINCGARS TRANSEC variables, suffixes and expanders, signs and
countersigns, and pyrotechnics, smoke signals, call words, and COMSEC keys.
EXPANDER - Used with a call sign suffix to identify a sub-element of the
position, mission or function identified by the suffix.
FREQUENCY - The number of reoccurrences of a periodic phenomenon in a unit of
time.
In specifying electrical frequency, the unit of time is the second, the
frequency is expressed in hertz (Hz) (meaning cycles per second). Radio
frequencies are normally expressed in kilohertz (KHz) at and below 999
kilohertz, and in megahertz (MHz) above this frequency.
FREQUENCY ASSIGNMENT - A designated radio frequency for use by a specific
radio net during a certain period of time.
FREQUENCY RESTRICTION - partially restricts the use of an available frequency.
Designated within the BGU by the letters A-P.
FREQUENCY SHARING - Allows different nets to be assigned the same frequency
for each time period.
HERTZ - A unit of frequency equivalent to one cycle per second.
HF - High-frequency (2.000-30.000 megahertz).
HOPSET - A set of frequencies that a frequency-hopping radio uses when in the
frequency-hopping mode.
ITEM NUMBER IDENTIFIERS - an aid that provides a rapi
station identity.
LF - Low-frequency (0.0001- 1.9999 megahertz).
d and general means of
The
MANUAL FREQUENCY - A frequency used for filling a radio remotely.
frequency is in the range of 30.000 MHz to 87.975 MHZ and is divisible by .025
MHz .
MEGAHERTZ (MHz) - A unit of frequency equal to 1,000,000 hertz (cycles per
second).
NATIONAL SECURITY AGENCY (NSA) - The agency, functioning under the Department
of Defense, which monitors the entire United States SIGINT (Signals
Intelligence) collection and processing effort. NSA is responsible for
research and development efforts and initial production procurement of BECS.
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