On Oct 22, 2011, at 3:24 PM, Gerhard Fiedler wrote: > the biggest problem with the use of traditional (not only English or > US) units is the tendency of people who use them to work with "magic > formulas" and not use proper units with their calculations You mean like "to get the length of your dipole antenna, divide 468 by =20 the frequency"? (which gives you the length in feet, of course.) One of the reasons I =20 never became a ham, sort-of.) http://www.radioqth.net/AntennaLength.aspx I like computing with units, except for (theoretically) needing to =20 know the units of assorted universal constants, which sometimes get =20 really ugly... Not terribly happy that even metric has its variations (cgs vs mks vs =20 si, for instance.) But at least if you get those wrong, you're likely =20 to be off by enough that you'd notice... BillW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .