Where Radar antenna be placed / kept onboard?

• Direction of view.

At least one display unit should be so sited that an observer faces forward when viewing it, and is readily able to maintain a visual lookout.

• Azimuth stabilization.

Surveyors should check that the display is provided with an input from a heading sensor.

Inspection of waveguide and microwave co-axial cables

Radar feeder runs are constructed from either waveguide or co-axial cable. The following types are in general use:

1. Rigid waveguide with a rectangular cross section;
2. Semi-rigid waveguide, usually with an elliptical cross section;
3. Flexible waveguide, usually with a rectangular cross section; and,
4. Microwave co-axial cable.
   Flexible waveguide should not be used for long runs as the losses in this type of waveguide are high. However, it can be used in short sections to overcome some of the physical constraints of a rigid or semi-rigid waveguide.

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