Things You'll Need
Instructions
Download FCC Form 605 from the FCC website, and print it out.
Write "HA" at Radio Service Code, #1. This denotes the license as Amateur Radio.
Circle "DU" at #2, Application Purpose, indicating that you are requesting a duplicate of an existing license.
Enter your callsign at #5, and check "no" at #7 and #8.
Enter your FCC Registration Number at #9. If you don't know your FRN, you may find it by searching your callsign on the ARRL website.
Enter your name, address, telephone number, and email address in the appropriate spaces.
Sign and date the form in the appropriate space. Do not forget this step; otherwise you will have to go through the entire process again.
Mail the form to:
FCC
1270 Fairfield Road
Gettysburg, PA 17325-7245