Thanks to all who answered, the circuit I was looking for is at http://www.geocities.com/CapeCanaveral/1138/850mod1.html Dave K9NX -- FAQ on WWW: http://www.contesting.com/trlogfaq.html Submissions: trlog@contesting.com Administrative requests: trlog-REQUEST@contesting.com Problems: owner-trlog@contesting.com Feature Wishlist: http://web.jzap.com/n6tr/trwish.html