3DR Radio Telemetry Kit 915 Mhz Module Open Source for APM 2.5 2.6 2.8

Features: Very small size,light weight 915Mhz frequency band Receiver sensitivity to -121 dBm Transmit power up to 20dBm (100mW) Transparent serial link Air data rates up to 250kbps Range of approx 1 mile with supplied antennas Demonstrated range of several kilometers with a small omni antenna Can be used with a bi-directional amplifier for even more range 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) 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 Support OTG of Android Cellphones, and computer OTG. Antenna is 5.8G Specifications: Item Name: 3DR Radio Telemetry Module Band: 915MHz Antenna connectors: RP-SMA connector Output Power: 100mW (20dBm), adjustable between 1-20dBm Sensitivity: -117dBm sensitivity Interface: Standard TTL UART Connection status: LED indicators Air Module Size: 51mmx29mmx9mm Ground Module Size: 69mmx24mmx24mm Package includes: 1x Air Module(915Mhz) 1x Ground Module(915Mhz) 1x 4Pin-5pin cable 150mm for APM 1x 4Pin-6pin cable 150mm for Pixhawk 2x 5.8G Antenna 1x USB cable