ETS-Lindgren 3119 Double-Ridged Waveguide Horn - Manual (Page 30)

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Mounting a Model 3106 Series Antenna to a 7-TR
Step 2
Lift the mount adapter up
and away from the boom.
Step 3
Remove the wingnut to free the
1/4–20 screw from the mount
adapter. You will re-use the
screw in Step 6. Step 4
Remove the nuts to free the
two screws from the vertical
plate on the mount adapter.
You will re-use the screws in
Step 6.