Hello. I am a Dutch Radio Amateur (CEPT Novice) and twice a year i am in Texas Covington where my (grand)kids live. Do i need extra papers besides my Dutch registration card to do some experiments on 20 and 10 meters in Texas? And is it possible for me to apply for a US license based on my Dutch papers, or do i need a new exam? I checked the FCC website but could not find my case.