Radar Observer · Operation — Performance Monitor
A radar performance monitor (or 'echo box') is used to:
- AMeasure target speed
- BVerify the set is transmitting and receiving at proper strength✓ Correct
- CSet the heading marker
- DReduce sea clutter
Explanation
The performance monitor displays a known pattern (a plume or rings) whose extent indicates whether transmitter power and receiver sensitivity are up to standard, letting the operator confirm the radar is working before relying on it.
Authority: Radar Navigation — Performance
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