REFERENCE INFORMATION (CONT’D)

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. 1-11