dead spot

noun
1.
Also called blind spot. an area in which radio or cell phone signals are weak and their reception poor.
2.
blind spot (def 4).
Examples from the web for dead spot
  • Daylilies develop a dead spot in the center of the clump with age and should be divided every five to seven years.
  • They also claim that it is often impossible to determine in advance if a construction crew will be working in a dead spot.
  • If you are in a dead spot the crew must have a plan to relay emergency calls through another site in the vicinity.
  • Drivers also reported a dead spot in the accelerator.
  • Tarry spots occur when a brownish fluid oozes from a dead spot on the trunk.