MFJ MFJ-1886 - Site Selection; Telescoping Mast; Side of House Mounting; Tower

SITE SELECTION
Before attempting to install your antenna, think where you can best
place your antenna for safety and performance.
To determine a safe distance from wires, power lines and trees:
1, Measure the height of your antenna.
2. Add this length to the length of your tower or mast, and then
3. Double this total for the minimum recommended safe distance.
f you are unable to maintain this safe distance, STOP! GET PROFES-
SIONAL HELP. Many antennas are supported by pipe masts attached
to the chimney, roof or side of the house. Generally, the higher the
antenna is above the ground, the better it performs. Good practice is
to install your antenna about 5 to 10 feet above the roof line and away
from power lines and obstructions. Remember that FCC limits your
antenna height to 60 feet. If possible, find a
mounting place directly above your set, where
the antenna wire can take a short, vertical drop
on the outside of the house for entry through @
wall or window near the set. Your dealer carries
@ complete line of installation hardware.
AVOIDTHIS LOCATION
power lines should be
at least twice the height
of the antenna and
mast combined.
CHOOSE A PROPER SUPPORT AND
MOUNTING METHOD
However you decide to mount and support your antenna always make
‘sure that safety is your first concern. Some of the more common
installation methods are illustrated below.
ROOF MOUNTED
ROOF MOUNTING
The swivel feature of "universal" type mounting brackets makes a conve ~
nient antenna mount for flat or peaked roofs. One clamp type brackat is
used with 3 or 4 guy wires equally spaced around the mast and anchored
to the roof or eaves by eyebolts. Apply roofing compound around the base
of the bracket, screws and eyebolts for moisture sealing.
TELESCOPING MAST
Guy wires should be equally spaced in at least three directions. Use at
least three guy wires for each 10 foot section of mast.
SIDE OF HOUSE MOUNTING
The safe distance from power lines is at least twice the height of antenna
and mast combined. Where roof overhang is not excessive, the side of the
house provides a convenient mounting, Position the brackets over a stud
if possible, one above the other, and space two or three feet apart. For
metal siding, first mark mounting holes, then drill pilot holes through the
siding to accept mounting screws.
TOWER
Tower safety is paramount to a good installation and requires that you take
location, tree growth, soil depth and proximity to buildings into consider-
ation, Tower foundations must be securely based on a solid concrete/
tower mounting plate, An alternative is to sink a 4-6 foot section of tower
into a concrete base for an extremely rugged mount. Proper guying is
essential to a safe weather-resistant installation that must handle severe
wind loading and is best accomplished with preformed uy arips, torque
brackets and tumbuckles. When working on
towers always use a safety belt made of
high quality web-type material
CHIMNEY MOUNTING
The chimney is often an easy and conve-
nient mounting piace. But the chimney
must be strong enough to support the
antenna in high winds. Do not use a
chimney that has loose bricks or mortar. A
good chimney mount makes use of a 5 or
10 foot, 1-114" diameter steel mast, and a
heavy duty two strap clamp-type bracket.
Install the upper bracket just below the top
course of bricks, and the lower bracket
two or three feet below the upper bracket.
For maximum strength, space the brack-
ets as far apart as possible,