There are several layers in the ionoshpere (way up in the atmosphere) that affect radio transmission. The D layer is the lowest, and is created by the sun ionizing certain gases in the upper atmosphere. The D layer ABSORBS radio waves in the range this station transmits.
Higher up, you find the E and F layers which REFRACT (bend) signals (that get through the D layer) back to the surface of the Earth some great distance away. These two layers are what make worldwide radio communications possible.
During the day, the D layer will completely absorb the radio waves, so none will be refracted by the higher E & F layers to your radio receiver. But, when the sun goes down, the D layer dissipatess very quickly, so the signals reach the E & F layers where they are refracted (bent) back to the Earth and you can receive the signal for a while, until the E & F layers begin to dissipate too. You may also receive the signal in the morning when the E & F layers begin to form, but before the D layer gets strong enough to absorb the signal.
In the US it is usually possible at night with the high power transmitters we use in the US, but in the UK , most transmitters there I find is low power used to cover only the county and surrounding areas so the other guys technical explanation is true, however your best bet is streaming online to hear this station ..sorry
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There are several layers in the ionoshpere (way up in the atmosphere) that affect radio transmission. The D layer is the lowest, and is created by the sun ionizing certain gases in the upper atmosphere. The D layer ABSORBS radio waves in the range this station transmits.
Higher up, you find the E and F layers which REFRACT (bend) signals (that get through the D layer) back to the surface of the Earth some great distance away. These two layers are what make worldwide radio communications possible.
During the day, the D layer will completely absorb the radio waves, so none will be refracted by the higher E & F layers to your radio receiver. But, when the sun goes down, the D layer dissipatess very quickly, so the signals reach the E & F layers where they are refracted (bent) back to the Earth and you can receive the signal for a while, until the E & F layers begin to dissipate too. You may also receive the signal in the morning when the E & F layers begin to form, but before the D layer gets strong enough to absorb the signal.
Hope that's clear enough.
Good luck!
In the US it is usually possible at night with the high power transmitters we use in the US, but in the UK , most transmitters there I find is low power used to cover only the county and surrounding areas so the other guys technical explanation is true, however your best bet is streaming online to hear this station ..sorry