A Chinese company on EBay is selling wireless modules operating in the=20 2.4-2.5G range based on the standard test module PCB layout published by Nordic.=20 They are selling a set of TWO modules for only $18 USD for the pair. What is nice about the nRF24L01 device is that tuning, baud rate,=20 encryption/decryption, addressing and handling of data is done through an SPI port, so no=20 special UART is needed. It addresses 154 different network nodes.On-PCB antenna is included .. Look at EBAY#320689282284, Description: NRF24L01+ Wireless Transceiver=20 Module 2.4GHz Arduino X2 All specs are included. --Bob Axtell e l --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .