It effectively reduces co-channel interference, expands the wireless transmission range. 4G LTE FDD:B1/B3/B7/B8/B20/B28(2100/1800/2600/900/800MHZ). 4G LTE FDD:B38/B39/B40/B41(2600/1900/2300/2500MHZ). Colour: Black.
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