100mw power Wireless device with antenna both ends at given gain level.
Antenna gain Wireless range
0dB 200m
4dB 440m
7dB 620m
10dB 1.2km
13dB 2.8km
16dB 5.0km
20dB 12.5Km
24dB 31Km
意思是两边都是100wm 无线设备时,天线增益对应的接收距离. 如果对方接收功率小,你就得加大你的天线增益.
