Description of Major Components.
AS-3577/GRC are shown assembled for use and briefly described below.
GUY PLATE. Consists of a round steel plate 3 inches (7.6 cm) in diameter. The
center hole fits over the male end of a mast section, and five of the eight outer
holes serve for attaching the four guys and a halyard. Three guy plates are mounted
on the mast.
MAST. The mast supporting the double delta antenna includes a mast base, a 6
inch square plate, insulator, and 16 identical 3-foot (0.92 meter) mast sec-
tions. When the mast sections are interconnected, the effective length of each sec-
tion is 2.5 feet (0.76 meter). (See illustration on page 2-8. )
TERMINATING RESISTOR ASSEMBLY. The terminating resistor assembly includes a
600-ohm terminating resistor box, a terminating resistor box stop, and a terminating
resistor box stop clamp which mounts the terminating resistor stop to the mast.
HALYARD. The halyard is a 140-foot (42.7 meter) nylon rope used to raise the
terminating resistor box to the terminating resistor stop. In addition to the rope,
the halyard includes a pulley attached to a snap hook, to attach to the top guy
plate, and an eyelet to connect to the slide hook on the terminating resistor box..
ANTENNA WIRE. A 500-foot (152.5 meter) roll of AWG #14 antenna wire to
construct the double delta antenna.
CONDUCTOR SPLICE. Three conductor splices are connected to each of the two
antenna wires to form loops to attach to the antenna rod lanyards and the terminating
LANYARD. Four 30-foot (9.15 meter) lanyards, consisting of color reflective
orange nylon rope with a thimble and snap swivel at one end, connect the four
antenna rods to the four legs of the double delta antenna. The lanyards also con-
nect the antenna rod stakes to the safety area rope stakes to support the antenna
ATENNA STAKES. Four antenna stakes assembled by connecting three identical
ground rods, are provided. The antenna stakes are connected via insulating lanyards
to the four legs of the double delta antenna. The antenna stakes and the safety
area rope stakes (item
) are identical. Each ground rod is 3 feet long.
Four 50-foot (15.25 meter) guys to support the upper portion of the
WHITE GUY. Four 40-foot (12.2 meter) guys to support the center portion of the
BLUE GUY. Four 31-foot (9.46 meter) guys to support the lower portion of the
Depending on the manufacturer, the guys, items
hook, or may have its length
have a red, white, or blue color near the snap
(50, 40, or 31 feet respectively) stamped near the snap hook.