(F)Element 8-47 Equipment Faults-4

Question 1

If the magnetron is allowed to operate without the magnetic field in place:

Answer 1

It will quickly destroy itself from excessive current flow.

Question 2

Targets displayed on the RADAR display are not on the same bearing as their visual bearing. What should you first suspect?

Answer 2

Incorrect antenna position information.

Question 3

Loss of distant targets during and immediately after wet weather indicates

Answer 3

A leak in waveguide or rotary joint.

Question 4

In a marine RADAR set, a high VSWR is indicated at the magnetron output. The waveguide and rotary joint appear to be functioning properly. What component may be malfunctioning?

Answer 4

The waveguide array termination

Question 5

On a vessel with two RADARs, one has a different range indication on a specific target than the other. How would you determine which RADAR is incorrect?

Answer 5

Check the sweep and timing circuits of both indicators for correct readings

Question 6

An increase in the deflection on the magnetron current meter could likely be caused by:

Answer 6

A decrease of the magnetic field strength.