scope:

This specification covers the general requirements for fixed, shore-based, high frequency (HF) antenna systems for use at Naval Shore Communications Stations, hereinafter referred to as the antenna. This specification does not cover rotatable log periodic antennas or other antennas requiring mechanical movement. Specific details are specified in the applicable detail specification (see 3.1).

Antennas shall be of the powers and wind classes specified in 1.2.1 and 1.2.2, and as specified in the applicable detail specification (see 6.2).

Antennas shall be of the following powers as specified (see 6.2):

Power 0 - 250 watts average 1 kilowatt (kW) peak instantaneous (receive) Power 1 - 1 kW average 4 kW peak instantaneous Power 5 - 5 kW average 25 kW peak instantaneous Power 10 - 10 kW average 40 kW peak instantaneous Power 10a - 10 kW average 80 kW peak instantaneous Power 25 - 25 kW average 100 kW peak instantaneous Power 50 - 50 kW average 400 kW peak instantaneous

Antennas shall be of the following wind classes, as specified (see 6.2):

Class Wind and ice conditions 1 100 miles per hour (mph) (no ice) 2 125 mph (no ice) 90 mph with 0.5 inch (in.) radial ice on all members 3 150 mph (no ice) 90 mph with 0.5 in. radial ice on all members 4 Special case, as specified in the contract (see 6.2)

intended Use: