Radio Band Expander
The Radio Band Expander enables the original equipment radio in Japanese import cars to receive UK radio transmissions. It achieves this by shifting the UK transmission frequencies into the band that the Japanese radio will detect. For example, shifting a UK radio station that transmits at 100MHz by 16 MHz will allow the station to be received by the Japanese Radio at 84MHz.
Japanese radios have a bandwidth of 14MHz (76-90MHz) compared to the UK bandwidth of 20MHz (88-108MHz), hence a certain band of frequencies will be lost in the shifting process. For flexibility there are three variations in the Band Expander range:
BC12 - 12MHz shift allowing reception of 88-102 MHz
BC16 - 16MHz shift allowing reception of 88-90 and 92-106 MHz
BC18 - 18MHz shift allowing reception of 88-90 and 94-108 MHz
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