中美大合照 (APM2 零件)
今天刚好收到美国和中 国订的APM 零件，快快来个大合照吧！左边两个是中 国雷迅，右边两个是美国DIYdrones！
3DR Radio USB-915 Mhz "地面" "天空 模块
[*]Very small size
[*]Light weight (under 4 grams without antenna)
[*]Available in 900MHz MHz
[*]Receiver sensitivity to -121 dBm
[*]Transmit power up to 20dBm (100mW)
[*]Transparent serial link
[*]Air data rates up to 250kbps
[*]MAVLink protocol framing and status reporting
[*]Frequency hopping spread spectrum (FHSS)
[*]Adaptive time division multiplexing (TDM)
[*]Support for LBT and AFA
[*]Configurable duty cycle
[*]Built in error correcting code (can correct up to 25% data bit errors)
[*]Demonstrated range of several kilometers with a small omni antenna
[*]Can be used with a bi-directional amplifier for even more range
[*]Open source firmware
[*]AT commands for radio configuration
[*]RT commands for remote radio configuration
[*]Adaptive flow control when used with APM
[*]Based on HM-TRP radio modules, with Si1000 8051 micro-controller and Si4432 radio module
价钱比Xbee平，但得100mw，只适合玩四轴，加booster去到500-1000mw就可以玩飞机。有无师兄提供booster的连结?
能不能详细点啊
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