Do CW skimmers have trouble with some callsigns? Since getting my new call AA4OO I haven't seen any spots in the reverse beacon network. Previously I'd always see a half dozen or more spots on any open band when I'd send my previous call (N4PBQ). I know I'm getting out because I'm getting quick answers to my CQs but it seems strange that not one skimmer has picked it up the new call. Do automated skimmers have issues with calls that end in OO or begin with AA? I don't think it's my FIST because I even let the keyer send a few times with its electronically perfect FIST.