WADE Antenna, Inc. DMX, DMXMD, DMXHD Installation Instructions Manual
Please Note: A qualified structural engineer
should be consulted prior to mounting an
antenna on a tower or support structure.
Instruction Sheet
390348 Rev. E
INSTALLATION INSTRUCTIONS FOR SELF-
SUPPORTING DMX, DMXMD, DMXHD CONCRETE
BASE TOWERS
BREAKING DOWN BUNDLE
1. Remove the 8 ft. mast, the three 4 ft. base stubs and the package of nuts, bolts and washers.
2. Lay the bundle on its side and remove tower sections. Start with DMX1 section (smallest
section) and remove by pulling out with quick, firm jerks. It is not necessary nor desirable to
pry sections out with tools.
3. Inspect all tower sections on delivery to make sure there are no loose or broken rivets
caused by transport mishandling. If a rivet is broken or loose, it should be replaced by a
snug-fitting machine screw and nut securely tightened.
CAUTION: SHARP EDGES—WEAR GLOVES
Survey your installation site NOW to prevent your
antenna or support from coming in contact with
overhead powerlines.
FAILURE TO EXERCISE THIS CAUTION
SETTING THE BASE IN CONCRETE
1. We recommend that a square hole be dug 1.2 m deep and 1.67 m square.
2. Fasten the 4 ft. base stubs to the outside of the tower base section. Insert a 1/2 inch bolt or
rod about 1 inch long (not supplied) through each hole in the bottom of the base stubs to
prevent the stubs from pulling out the concrete.
3. Place the bottom tower section with base stubs attached into the hole and hold in a vertical
position while concrete is poured in. Level the concrete even with the bottom of the base
section.
NOTE: Since the three legs taper in about 1 degree, check each leg so they are all the
same angle using a long level as shown at right.
WARNING
CAN CAUSE ELECTROCUTION
Level
1/4”
spacer
taped
to level
22”
BASE STUBS
IN CONCRETE
The recommended concrete base for installers who use “Ready Mix” concrete:
3.34 cubic m Width: 1.67 m Depth: 1.2 m
NOTE: If the tower is being placed in loose soil, be sure to check with a local
building contractor for advice on installing a deeper or larger base. This tower is no
stronger than the base itself. (Assumed soil 190 KPA or 4000 PSF.)
ERECTING TOWER
After the concrete is hard the tower is ready to be erected. We recommend the use of a “gin-pole”
similar to the drawing on page two. The gin-pole is 15’ long and hooks into the “X” braces and straddles the tower leg. The rope which runs through the pulley is attached to the next tower section a bit
above the centre of the section. A man on the ground can pull the section up and the man on the
tower guides it into the top of the lower tower section. Special stop rivets prevent the upper section
dropping too far inside. After the bolts and nuts are securely tightened the gin-pole can be unhooked
and raised to the top of the next section and so on until the tower sections are all installed. The ginpole is handy for installing the antenna and mast. A strong safety-belt should be worn when climbing
the tower for assembly or antenna adjustments. Gin-pole will fit from DMX1 to DMX6 sections.
HUB HINGE-UP BASE FOR DMX TOWERS
1. Assemble the 3 legs of HUB and tighten all bolts and nuts securely. The threaded end of
each long rod should not protrude more than 1/8” beyond nut or hinge — tube may catch on it
when hinging.
2. Bolt HUB tubes on the INSIDE of each leg of bottom tower section. Make sure hinges all face
the same direction.
3. Bent ends of legs are positioned away from each other.
4. Dig base holes as outlined on this sheet above.
5. Place tower section, with HUB attached, into hole and hold it in a vertical position while concrete is poured in. Level concrete even with bottom of the lower nuts. Check all three legs
with a level to make sure they all tilt the same (about 1 degree).
6. Wooden tower supports can be placed under the legs to hold them in position. Shims made
from thin metal can be driven under legs until tower section is absolutely level on all three
legs.
7. Make sure two legs are away from the building or the tower will not hinge up.
8. A block and tackle can be used to pull tower up.
9. We recommend installing a safety anchor to prevent the tower from toppling.
DEPTH
1.2m
1/2” bolt or rod
WIDTH = 1.67m
Wood leg
support
HUB Hinge-Up Base
NTS
Top view of
base
Ontario, CANADA
www.wadeantenna.com
15 ft. x 1-3/4”O.D. x 16
ga. mast
3/8”O.D.
steel rod
2 7/8”
TOWER HARDWARE
WARNING
Do not replace hardware with common off the shelf
product.
Please contact the factory for replacement
hardware.
IMPORTANT NOTE: The following procedure should be used when bolting tower sec-
tions together. Insert bolt through holes of the two sections. Place a lockwasher on the
bolts and run the nut on. Only one lockwasher is required on each bolt and it is placed
under the nut. These special heat treated bolts have solid shoulders in order to prevent
the tower sections from shifting. Tighten the nut securely, but be careful not to strip the
threads.
NOTE: 3/8” dia. X 5/8” bolts are used on DMX1, DMX2 and the top of DMX3 sections.
1/2” dia. 3/4” bolts are used on the bottom of QDMX3 and on all sections (DMX4 to
DMX8—DMX8 is the largest section). All bolts and nuts are specially heat treated.
Install like this
against strong
prevailing winds
37 1/2”
1”
weld
3 1/4”
4 1/2”
Gin-Pole Construction
LOAD LIMITS
DMX TV towers are designed to support a large TV-FM antenna or a separate TV and FM antenna of medium
size.
Guy wires must be used if larger loads are required or if greater height using straight section is needed.
DMXMD Medium Duty towers can support two large TV or FM antennas or a small amateur beam or GRS
antenna.
INSTALLING MAST
1. Two U-Bolt assemblies with “L” brackets are supplied for installing the mast. These “L” brackets are
2. Adjustments to make the mast vertical may be made by moving the “L” bracket in the slotted holes.
3. DM-Mast should be no more than 4 feet above the top of the tower.
4. A horizontal step is included in the top section to make it more comfortable for the installer when work-
TORQUE SPECIFICATIONS:
3/8 inch dia. 25 ft-lbs.
1/2 inch dia. 60 ft-lbs.
Delhi Towers are designed and built to stand up for
years against severe wind and ice conditions. Although all towers are carefully made and inspected
before they leave our factory, they are not guaranteed against failure due to shipping damage, overloading or improper installation. Please read instructions carefully.
bolted through the slotted holes on each plate with the short leg of the “L” bracket toward the outside
of the tower.
ing on mast, rotator or antennas.
Do not
overload
towers
with cross
bar
mounted
antennas
Coax. Cable
Water-proof tape
Rotor
wire
INSTALLING ROTORS
Any make of rotor can be installed on the rotor plate provided, inside the top section of a DMX tower for a neat
appearance and also to make use of the mast thrust bearing on the top plate, which increases rotor life considerably.
Ontario, CANADA
www.wadeantenna.com
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