Hi Guys, It was Howard that mentioned the full size loop. Is the formula for a loop 1005 divided by frequency? Now the formula for a half wave dipole is 4 68 divided by frequency. My next question is why is the loop more than twice as long as the dipole? Seems like a full size antenna should only be twice as long. I am not an engineer though. 73 Walt WA4QXT New London CT [log in to unmask]