Huawei Airbridge DBS3900 Product Description page 35

2 Solutions for the Auxiliary Devices of the DBS3900
2-8
If the distance between the RRU3606 and the BBU3900 exceeds 70 m [229.66 ft], independent
power supply equipment needs to be configured for the RRU3606.
The auxiliary devices should be configured according to the actual situation and power input mode.
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Airbridge DBS3900 CDMA Base Station
Product Description
Issue 11 (2010-06-18)