On Wed, Sep 29, 2010 at 8:28 AM, Jon K Hellan <hellan at acm.org> wrote: > A timing grade GPS, e.g. a Garmin GPS 18 with serial port, is $ 82 on ebay. you can get one new for $78 from our very own N1VG. https://www.argentdata.com/catalog/product_info.php?cPath=23&products_id=37 -- -Jason kg4wsv