The first set is at 30' and the second ones for the 75' extension kit are at
I'll send you the diagrams in a separate email.
Here's an excerpt from the manual for the guying procedure:
2-4. Layout and Installation of Guy Anchors
a. Required Items. For installation of the AB-577/GRC, with or without the
MK-806/ GRC, select the
radius rope, the digging bar, and the hammer. Depending on the condition of
the soil, select either
stakes GP-112/U or the screw-type anchors. For normal soil conditions, use
the screw-type anchors. If the
ground is composed of shale, sandstone, soft rock, ice,etc., use the
GP-112/U's. In some cases, small trees,
large rocks, stumps, etc., may be used as guy anchors.
b. Procedure for Location of Guy Anchors (fig. 2-6). Mark the location for
the AB577/GRC guy anchors,
using the procedures given in (1) below. When the MK-806/GRC Figure 2-6.
Layout of guy anchor position.
is used, proceed to (2) below after the procedures in (1)below are
completed. If necessary, the location of the
guy anchors may be located up to 5 feet farther from the mast if
obstructions prevent their being located as
shown. The guy assemblies are long enough to reach the added distance. Use
Stakes GP-2, 2-5 TM 11-5820-538-12
Figure 2-7. Use of digging bar with screw-type guy anchor. driven about 3
inches into the ground, to mark the
positions of the guy anchors and the mast.
The radius rope has a loop at each end and a loop where the 30-foot and
52-foot sections join (A, fig. 2-4).
(1) When only the AB-577/GRC is to be used, proceed as follows:
(a) Mark the proposed mast position with a GP-2.
(b) Put the loop at the end of the 30- foot section of the radius rope
over the mast location stake, and mark the position of the first guy anchor
30 feet away (first step,A, fig. 2-6).
(c) Leave the end of the 30-foot section of the radius rope on the mast
location stake, and put the loop at the end of the 52-foot section over the
marker stake for the first guy anchor. Take the remaining loop in the radius
rope. Stretch both sections of the rope, and mark the second guy anchor
position (second step, A, fig. 2-6).
(d) Leaving the ends of the radius rope looped over the same two stakes,
stretch it in the other direction and mark the third guy anchor position
(third step, A, fig. 2-6).
(2) When the MK-806/GRC (75' extension kit)is to be added to the AB-577/GRC,
refer to B, figure 2-6 and proceed as follows, after the guy anchor
locations for the AB-577/GRC ((1) above) have been completed. Loop the end
of the 52-foot section of the radius rope over the mast location stake. Mark
the position of the three guy anchors for the MK-806/GRC in line with the
AB-577/GRC guy anchor locations, 52 feet from the mast location stake.
Joe - KC2TN
"If you're sure of everything,
and it still doesn't work,
one of the things you're sure of is wrong!"
[mailto:email@example.com]On Behalf Of RICHARD BOYD
Sent: Friday, August 20, 2004 10:19 PM
To: towertalk reflector
Subject: [TowerTalk] AB-577 extension anchor points?
Anyone know how far the "extension" anchor points are from the base on an
AB-577 portable tower, military surplus? The anchor points for the first
set are in the manual and can be found with the triangulation rope that
comes with the AB-577 -- good up to 50'. But, the tower can be taken up to
75' with a second set of guy anchors. So, I need to know the distance of
the second set of anchors from the base (or from the first set of anchors).
73 - Rich, KE3Q
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
TowerTalk mailing list
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
TowerTalk mailing list