Antenna Stowing Procedure - Sea Tel ST94-21 Installation And Operation Manual

Maintenance and Troubleshooting

13.10. Antenna Stowing Procedure

WARNING: Antenna Pedestal must be properly restrained (stowed) to prevent damage to
wire rope isolators, isolator springs and/or antenna pedestal mechanism during underway
conditions when power is removed from the antenna assembly.
The normal operating condition for the Sea Tel Antenna system is to remain powered up at all times. This ensures that
the antenna remains actively stabilized to prevent physical damage to the antenna pedestal and reduce condensation
and moisture in the radome to prevent corrosion. If, for some reason, the antenna must be powered down during
underway transits, it should be secured with nylon straps regardless of sea conditions to prevent damage to the
antenna system. Refer to the procedure below to secure the antenna pedestal.
Equipment & Hardware needed:
•
Two (2) ½-13 x 2-inch Stainless Steel bolts.
•
Two (2) Nylon straps with ratchet mechanism. Nylon straps must be rated to 300 lbs. Working load
capacity and 900 lbs. Max rated capacity.
Stowing procedure:
1. Point the antenna to Zenith, (90 degree elevation angle),
straight up.
2.
Install one (1) ½-13 x 2-inch bolt into the inside of each
elevation beam as shown in Figure 1.
3.
Hook one end hook of the nylon strap to bolt in elevation
beam as shown in Figure 2.
13-26
EAR Controlled - ECCN EAR99
ST94-21 C/Ku-Band TVRO