Original poster: "Calvin Patrick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <linhacktux-at-wycol-dot-com> I purchased a nst, but now that I look at it, it says 220 vac -at- 50 hz. Wall current is 60 hz last time I checked. Will this cause problems, or will I have to build/buy a frequency adjustment circut. Thanks for any help... Calvin