[HamWAN PSDR] Second dish/radio with same credentials

As spring comes upon us young men start thinking about...portable HamWan ops. I have a second new dish and radio I've never set up. Can I use the same credentials I have on my residential dish? If I have success with my full size Micro-Tik as a portable I may be tempted to trade someone for a more portable size. Ric Mount Vernon WA