About: "This is why dogs 'cock' their heads. The sound waves arrive at different times producing a phase shift and improving copy." Yes, of course that is what NIPPER, the RCA dog has been doing for the past 85 years! 73, Roy K6XK/0 -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com