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The following sections will use the diagram on pg. 36 for reference:
Section 6.2: Mount BigIR EHU assembly
• At this point we are ready to assemble the antenna. It is easiest to first install the EHU assembly onto the
vertical mounting post and then insert the EST assembly into the EHU, clamp down the 2” saddles, and
set up your guys.
• Using the remaining quick disconnect boot (60-1006-22), fasten the BigIR EHU assembly onto the vertical
mounting post (see figure on next page).
Section 6.3: Install CPVC/EST extension assembly
• With the CPVC inserted into the EST extension, and the telescoping pole affixed to the top, make sure
there are no obstructions for the last time before final assembly.
• Now the entire assembly must be lifted and inserted into the EHU. Multiple things will happen simultane-
ously, as the guy lines should already be attached to the guy clamps (and will be raised during install), the
CPVC will have to be installed into the EHU, and the EST assembly will have to be clamped to the high
wind kit.
1) Use the provided glue kit (PN 72-0039) or heat shrink (PN 10-1059-51) to bond the CPVC liner to the Big-
IR EHUs CPVC stub. Apply the glue to the OD ONLY (if using the glue kit) before inserting into the cou-
pler and twisting. Work quickly as the glue will dry quickly and become less effective.
2) Insert the EST extension assembly’s aluminum coupler over the BigIR EHUs EST. Once it is fully seated,
place the 2” aluminum saddles (or plastic) evenly onto the aluminum coupler and tighten the hardware
until secure.
3) Tighten all guys, install coax and radials (to EHU if not using 80m coil, to coil if using 80m coil), and
weatherproof all connections.
Congratulations, you have successfully erected the SteppIR BigIR vertical antenna system!
Before applying power for the first time, it is mandatory to tune your antenna
(see pg. 42-44)
MOUNTING THE BIGIR
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