The radio only works when the ignition key is in the "ACC" or "ON" position. When the engine is not running, the radio only works when the ignition key is in the "ACC" position.
For best radio reception, the antenna should be fully extended.
Radio signal reception is affected by the power of the transmitting station and its distance, interference from buildings, bridges, mountains and other obstacles. Short-term changes in reception quality are usually caused by these external interferences.
This type of antenna cannot be folded, but it can be removed by turning it counterclockwise in succession.
CAUTION! Always remove the antenna before washing the car with a mechanical car wash. Otherwise, the antenna may be damaged.
(The source is published on the portal: NISSANBOOK.ru)