depth sounder Dec 21, 2004 12:47:58 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by 3rdwishsam on Dec 21, 2004 12:47:58 GMT -5 Hi All,I have a standard ds1, no owners manual. It has 2 switches. One is called range. what is that used for. If any one could email me part of the owner manual that would be great too.