If its the chart from Omega you can go to their website, www.omega.com
, and request another one. Just click on the free literature tab at the top of the page and scroll to the bottom. Select your location. Then fill out the request form and they will mail you another one. I think that I have an extra one. I will see if the second one is filed away. The other one is one my office wall.
73's Brent KG4WOW