Poor reception areas
It may be difficult to receive the time signal properly under certain environmental
conditions or in areas susceptible to radio noise.
• Extremely hot or cold
locations
• Inside vehicles
• Electrical appliances and OA
equipment
• High-voltage electric
cables, railway overhead
cables, airports
(transmission facilities)
• Inside reinforced concrete
buildings, between tall
buildings, mountains, or
underground
• Near mobile phones or
smartphones that are in use
About signal reception
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