Section II. OPERATION UNDER USUAL CONDITIONS

TM 11-5985-371-12&P

2-3. General. Antenna AS-3577/GRC has neither operating controls nor indicators.

This section covers siting (para 2-4), assembly and preparation for use (para 2-5),

and preparation for movement (para 2-6).

WARNINGS

NEVER ERECT THE ANTENNA DIRECTLY UNDER POWER LINES.

If you must erect the antenna near power lines, power-line poles,

power-line towers, or buildings with overhead power-line connec-

tions, never put the antenna closer than 100 feet from the base

of a power-line, power pole, tower or building.

Make sure the area for inserting the mast base and guy stakes,

antenna rods, and safety rope stakes is firm. If the ground is

marshy or sandy, see paragraph 2-7 for specific instructions on

how to reinforce the mast base and stakes. See paragraphs 2-8

through 2-11 for other possible hazardous conditions.

When selecting antenna sites, avoid traveled areas and roads. If

you cannot avoid these areas, get specific instructions from your

supervisor as to what clearance your guy wires and ropes must have

over traveled areas and roads.

2-4. Siting. The ideal location for erecting the antenna is the center of a plateau

having no natural or artificial obstructions or electrical interference sources such

as radar equipment or power transmission lines nearby. When possible, select a

level 120 by 70-foot (36.6 by 21.4 meter) plot of dry ground having good drainage to

provide a firm base for the mast base, guy stakes, antenna stakes and safety-rope

stakes. When communicating with two or more distant stations, locate the antenna in

a site most favorable to the station most difficult to receive.

2-5. Assembly and Preparation for Use.

WARNINGS

Personnel should be familiar with the requirements of TB SIG 291;

failure to follow the requirements of TB SIG 291, could result in

injury or death.

If you suspect that power lines have made accidental contact with

the antenna, do not touch the antenna assembly, immediately stop

operation, rope off the antenna area, and notify your supervisor.

a. General.

(1) Warnings. Read the WARNINGS immediately following the cover page of the

manual prior to installing the antenna assembly and keep them in mind during

installation.

2-3