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If the 80m coil will be mounted to the BigIR, the standard pan head bolts must be replaced
with 2” long bolts. Refer to figure 8.5 to locate the pan head bolts to change out.
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Figure 8.10 shows which bolt holes need to have the spacers on them.
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There are two spacers on the end of the EHU without the wind reinforcing plate. One is a
0.562” plastic spacer, and the other a 0.250” aluminum spacer as shown in figure 8.11.
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There is a single 0.562” spacer on the end of the EHU that has the wind reinforcing plate
attached as shown in figure 8.12.
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It is difficult for the nut to sit flat on the 80m coil cover, so for the four #10 x 2” pan head
bolts used for mounting we have you put the threads upward, with the Nylock nut being
attached on the EHU side of the connection.
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Place the bolts through the 80m cover and the mounting plate/wind reinforcing plate and
tighten. There must be a washer on the plastic EHU side of the hole, for all of the pan
head bolts, regardless of orientation of the bolt. Do not forget to use anti-seize for all fas-
teners. Figure 8.13 shows the completed wind reinforcing assembly installation.
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Follow the rest of the BigIR installation guide for connecting the 80m coil to the BigIR.
80m Coil Option
Figure 8.10
Figure 8.12
Figure 8.11
Figure 8.13
Wind reinforcing kit installation instructions (continued)
Summary of Contents for BigIR - MK IV Vertical
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