The link does not seem to be available on the LWCA web site due to some construction, but the article is still there at http://www.lwca.org/library/lfprop/adcock/lfprop1.htm (high resolution version) or http://www.lwca.org/library/lfprop/adcock/lfprop1.htm (for VGA displays). I got there via the links on my web site at http://www.computerpro.com/~lyle/ Lyle, K0LR