This kit contains a functional standalone UHF radio system consisting of a Transmitter (Attiny13 + T5750), Receiver (ATA5760/61), and Interface Board. The Interface Board provides a quick, one-step programming tool to configure Atmel RF receivers OR doubles as an expansion card for the STK500 (not included in kit) to allow development of software for receiver applications using any of the AVR microcontrollers supported by the STK500. The STK511 Starter Kit is available in 2 different versions covering 868 MHz and 915 MHz as designated by the part number suffix -8, -9 respectively.