Source Xbee PRO S3B 900HP RPSMA Wireless Kit 250mW 28 miles USB/TTL (ground or air module) on m.alibaba.com
Digi XBee and XBee-PRO Zigbee RF Modules | Digi International
XBee® Family RF Modules - DIGI | Mouser
Amazon.com: DIGI XK-WDM Digi XBee S2C DigiMesh 2.4 Development Kit, with 1 SMT and 2 TH modules/dev Boards : Electronics
Archived:Using Xbee radios for telemetry with APM — Copter documentation
XBee S2C Wireless Kit for Arduino
SparkFun XBee Wireless Kit - Robodyne Robotics
LilyPad Arduino 3 Piece Bluetooth Starter Kit XBEE Board - HC-05 Bluetooth XBEE Module - XBEE Interface Adapter. Add a Bluetooth Connection to your LilyPad Project - Walmart.com
Digi XBee Development Kits | Digi International
XBee Adapter kit [v1.1] : ID 126 : $10.00 : Adafruit Industries, Unique & fun DIY electronics and kits
XBee Adapter Board - Parallax
Digi | XBee CAT 1 Starter Kit | XKC-V1T-U
XBee S2C Wireless Module Kit - 100 meters
Mouser now shipping wireless connectivity kit with XBee modules from Digi International - Electronic Products