I've just gotten aVX-170 and would like to know the difference in theory and operation between the "LVL" squelch setting (page 13 in the manual) and the "S" squelch setting (page 18 in the manual.) 73, Tim ________________________________________________________________________ Interested in getting caught up on today's news? Click here to checkout USA TODAY Headlines. http://track.juno.com/s/lc?s=198954&u=http://www.usatoday.com/news/front.htm?csp=24