> In very short: If it doesn't have a blue tag > on the top that says "ARC-5," it ain't an ARC-5. > >73 DE Dave AB5S Very nice job and much appreciated. Among the three types, are the top covers interchangeable? If so, owners and intending buyers would need to be a little wary about relying solely on the top cover markings. 73 de Neil ZL1ANM