5)Make sure the vent tube is in the correct position, and then fasten the radome base to the mounting platform with four each of M10 x 20 hex bolts, flat washers and spring washers (supplied). Do not over- tighten the bolts; the tightening torque should be between 200 and 250 kg cm.
Radome base assy.
15 mm
mm
Flat | Platform |
washer |
Spring
washerM10 x 25 hex bolt
Figure 5-4 How to fasten the radome base
to the mounting platform
Wiring and final preparation inside the antenna unit for MODEL 821
1)Drill a hole of at least ø27mm through the deck or bulkhead to run the signal cable between the antenna unit and the display unit.
2)Pass the cable through the hole. Then, seal the hole with sealing compound for waterproofing.
3)Unfasten the cable gland and pass the signal cable through the hole at the rear of the radome base. The cable has three plugs which you connect to the antenna unit.
4)Secure the cable with the cable clamp- ing plate and gaskets. Fasten the shield to one of the fixing screws for the cable clamping plate to ground the shield.
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