Shadow sector vs Blind sector

Shadow sector vs Blind sector

Shadow sector
Partly.
Radar echoes can be received but partly.
Obstructions due to funnels and masts near the radar antenna.
Occur within the smaller angles sub-tended by the obstruction.

Blind sector
Fully.
Radar echoes can not be received at all.
Obstructions due to funnels and masts near the radar antenna.
Occur within the larger angles sub-tended by the obstruction.