Citizen Promaster Sky Super Skyhawk JY0080-62E Instruction Manual page 27

When signal reception is poor
The surroundings near your house, such as high-tension electrical lines or structures
may block the path to the signal location, this can cause a poor environment for
receiving the time signal.
With reference to pages 17 to 24, search for a better place for reception.
Then, attempt to receive the time signal in the procedure on pages 20.
• When the reception result is "L", place the watch in another location so that "H" or
"M" is indicated.
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