Sea Tel 9797A-27, Installation And Operation Manual

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Installation 9797A-27 C-Band TXRX
4-2
WARNING: Electrical Hazard – Dangerous AC Voltages exists on the side of the Antenna
Pedestal Power Supply. Observe proper safety precautions when working inside the
Antenna Control Unit.
WARNING: RF Radiation Hazard - This stabilized antenna system is designed to be
used with transmit/receive equipment manufactured by others. Refer to the
documentation supplied by the manufacturer which will describe potential hazards,
including exposure to RF radiation, associated with the improper use of the
transmit/receive equipment. Note that the transmit/receive equipment will operate
independently of the stabilized antenna system.
The ultimate responsibility for safety rests with the facility operator and the
individuals who work on the system.
WARNING: RF Radiation Hazard - Prior to working on the stabilized antenna system,
the power to the transmit/receive equipment must be locked out and tagged. Turning
OFF power to the Antenna Control Unit does NOT turn Transmit power output OFF.
The ultimate responsibility for safety rests with the facility operator and the
individuals who work on the system.
WARNING: RF Radiation Hazard - When the transmit/receive system is in operation, no
one should be allowed anywhere within the radiated beam being emitted from the reflector.
The ultimate responsibility for safety rests with the facility operator and the
individuals who work on the system.
4.2. Site Survey
The radome assembly should be installed at a location aboard ship where:
1
The antenna has a clear line-of-sight to as much of the sky (horizon to zenith at all bearings) as is
practical.
2
Direct radiation into the antenna from ships radar, especially high power surveillance radar arrays, is
minimized. The radome should be as far away from the ships Radar as possible and should NOT
be mounted on the same plane as the ships Radar (so that it is not directly in the Radar beam
path).
3
The radome should be as far away from the ships high power short wave (MF & HF) transmitting
antennas as possible.
4
The Above Decks Equipment (ADE) and the Below Decks Equipment (BDE) should be positioned
as close to one another as possible. This is necessary to reduce the losses associated with long
cable runs.
5
The mounting location is rigid enough that it will not flex, or sway, in ships motion or vibration. If the
radome is to be mounted on a raised pedestal, it MUST have adequate gussets, or be well guyed,
to prevent flexing or swaying in ships motion.
If these conditions cannot be entirely satisfied, the site selection will inevitably be a “best” compromise
between the various considerations.
4.3. Preparing For The Installation
4.3.1. Unpack Shipping Crates