That is Switch 3 on DIP S1 of UX-14. Set it to OFF. Hope you got UX-14 in your radio installed. This is really rare item. 73, Igor, UA9CDC -- WWW: http://www.k1ea.com/ Submissions: ct-user@contesting.com Administrative requests: ct-user-REQUEST@contesting.com Problems: owner-ct-user@contesting.com