The service bulletin for the IC-736 LSB frequency jump is here: http://www.qsl.net/icom/oldicomfaq/ic-736_38.html One can also do a search on IC-736 in the Icom America knowledge base. http://www.icomamerica.com/support/kb/Default.aspx Cheers for now, 73, Adam VA7OJ/AB4OJ Scanned for viruses by Blue Coat http://www.WinProxy.com/