Actually, for the K3 you should try http://www.zerobeat.net/mediawiki/index.php/K3_Serial_Numbers 73, Barry N1EU >Try http://www.zerobeat.net/qrp/elowners.html >Bruce Bowman, NM5B >Santa Fe, NM >> Sorry for the bandwidth, but I can't find the matching post. What is >> the URL for the K3 user registry? >> >> tnx...de Doug KR2Q