Original poster: "maykrug by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mf31-at-qwest-dot-net> I have been thinking of an online book sort of a thing but still thinking... Cheers, Terry personally, i'd like to see this happen. i find it difficult to locate good information for the intermediate coiler, who doesn't happen to be an EE. perhaps there is something i could do to help. dan