1. MOUNTING
Installation precaution for S-band antenna unit
If an S-band antenna unit is mounted near the end of a platform to provide sufficient rotation clearance for the radiator, the antenna unit, because of its weight, swings up and down by ship’s vibration and rolling. This exerts excessive levels of stress at the base of the radiator, which can damage the radiator. To prevent this, relocate the antenna unit, or if relocation is not possible, reinforce the platform.
Mast for
DF, etc.
Remarkable vibration (pitching)
Mounting position
EXAMPLE
Mast for DF
Mount the antenna unit directly on the mast or on the platform, as near as possible to center of the mast.
Mounting precaution for S-band antenna unit
