I was peeking at the new Air Force one book. In the book there is a pic of the comm station during the Johnson admin (either 26000 or 27000) in which a 51S-1 is clearly visible on the radio operators desk. Not panel mounted, just sitting on the desk in the cabinet. 73 Tom __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree