Sorry to revive an old thread, but has LiquidKernel or anyone else successfully implemented a dead reckoning solution with a Tyco module? The price sure seems to be right.
Also, for anyone else interested I noticed that mouser is selling single quantity units for $59 with no special request needed ($45 for the version with no header or antenna pigtail).
http://www.mouser.com/search/refine....0-V23993-A1029