Installation Guide

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Warning: Telomast installation should not be undertaken by inexperienced persons. It
is recommended that the mast be installed by a suitably qualied tradesperson. Safety
precautions should be observed, including the wearing of a builder’s hardhat and safety boots.
Beware of overhead electric cables. Local government authorities may require the submission
of an application for building approval and/or an Occupational Health & Safety Plan before
installation can commence.
1. Select the site. For installation on a level surface, the staying diagram (g 1) indicates the
space required. For installation on pitched roofs, special guy lengths and loading conditions will
apply. The base and guy anchor points must be capable of supporting the design loads from
the mast. The base and guy anchor loads are specied in table 2 for standard installations. Foot
mounts are available for sloping and at surfaces as well as roof peaks. Foot mount options
include our 11MM-TRM-MD for tiled roof ridges or at surfaces, 11MM-IRM for tin roof ridges and
11MM-LARM for at or sloped surfaces.
2. Securely install the foot mount or base plate to the mast base xing point. Attach turnbuckles
to all guy anchor points. Note: to avoid possible over-stressing of the mast structure, it is
important that the guy anchors be located no closer to the mast base than specied in gure1.
3. Remove shipping pin (g 2) from bottom of mast and the small screw from the top lock rings.
Slide the top guy support and the top guy plate off the mast and replace them in opposite
order. Screw the lock screws (from the accessory bag) into the lock rings, making sure that the
lock screw just protrudes into the top hole in each mast section, except the top section which
will have its lock ring tightened 300mm below antenna position (g 3). Install thimbles in the
guy plates and attach the guy wires with wire rope grips. Three wire rope grips should be used
at each end of the guy wire. Fit the bridge of the wire rope grip to the loaded part of the rope
(g 4).
4. Stand mast in foot mount or base plate. Attach bottom set of guy wires to turnbuckles on
anchors. Tighten and check for vertical with spirit level (g 5).
5. Using an elevated work platform, attach antenna and feeder cable and line up the guy plates
so that all ttings are facing in the same direction.
6. Extend top section of mast until stop is reached and tighten lock screw to hold it there.
Extend next section of mast 80-90mm until the holes for the retaining pins are visible, clamp
with lock screw, and insert the two retaining pins. Release lock screw holding the top section
and allow it to drop down onto the retaining pins, then turn it until the notches engage on the
pins (g 6). Retighten the lock screw. Continue as above until
mast is fully extended.
11MM-MT20, 30 & 50
INSTRUCTION MANUAL
Fig 1 15m Telomast
Arrangement
Fig 2 Shipping
Pin
Fig 5 Check
Vertical
Fig 6 Joint
Detail
Fig 4 Wired
Turnbuckles
Fig 3 Antenna
Position