
SteppIR Antennas — MonstIR
29
4. Slide the 1 ¾” O.D. second element support tube extension section over the CPVC tub-
ing and mate it with the aluminum coupler on the 2” OD section 1 tube. Make sure the
male coupler “bottoms out” so only 3” is left exposed, see
Picture 22
. Install a 2” U-bolt
as shown in
Picture 22
and tighten. Make sure to leave room to seal the joint with tape
by sliding the U-bolt to one side as shown
Picture 22
. Apply electrical tape as shown in
Picture 23
to seal it and then a layer of pure silicone tape to protect against sunlight.
The silicone tape is self-fusing and it only sticks to itself. End your last wrap on top of
the silicone tape, not on the aluminum. Repeat for all six element halves.
5. Changes have been made to reinforce the support tube extensions. A self tapping screw
has been placed on each tube. These screws need to be placed so that when the antenna is
in the air that the self tapping screw heads are oriented so that the heads are facing the
sky as shown in picture 22. It is important that the screws are placed properly so that the
screws will not attract RF that is given off by the element.
Picture 23
1.5
1.5
3.0
6.0
First element section 2"
Second Element Section 1.75"
Leave room to tape joint
by positioning the U-bolt
as shown
Self tapping screws
Picture 22
Self tapping screws - silicone covered to protect from corrosion
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