The Microchip Development Tools Deals features now the 915 MHz Secured Wireless Remote Control Development Kit – KeeLoq and KeeLoq AES for 99USD:
<<A 4 button PIC12LF1840T39A Key Fob powered by a CR2032 + A Semtech SX1239 Receiver PICtail Daughter Board + RTCC enabled Embedded Security Development Board >> is the formula.
DM182017-3 product page: http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en559027
Semtech wide frequency range receiver SX1239 page: http://www.semtech.com/wireless-rf/rf-receivers/sx1239/
The Keyfob uses a λ/4 pcb loop antena with dimensions specified on page 23 of the User Guide aka 41646A.pdf
Other November Development Tools Deals include the DM240012 – MPLAB Starter Kit for PIC24E MCUs, the ADM00393 – MCP2200 Breakout Module and the Fubarino (sounds like King Arduino’s fooBar) TCHIP010 SD enabled Pic32 Development Board.
Great!