Dave, A quick check of the Field Day rules says yes, 5 solar contacts are all we need. That station counts as an active transmitter while on the air - one of the 3, 4, 5, or 6 I've heard mentioned. Of course, you can make 5 solar contacts or run 15 minutes, unplug the solar power source, plug into the generator, and keep going. - - Steve, KE1KF