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- Master (Oceans or Near Coastal (Uninspected Fishing Industry Vessel)) »
- Q183 - Navigation General: Oceans
176. Which radar control shortens all echoes on the display and reduces clutter caused by rain or snow?
The fast time constant (differentiator) reduces rain or snow clutter by shortening echoes. This control electronically shortens the duration of echoes, suppressing long-lasting returns from precipitation while preserving sharper target echoes; sensitivity time control addresses sea return, brilliance adjusts display brightness, and receiver gain reduces all echoes without shortening them.
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