I have an off-reflector friend who's just built a K1. He asks if it can be mated with a KPA-100, perhaps in an EC-2? Off hand, I'd say there are ... at least ... antenna relaying issues involved. He realizes that if this is possible he might not achieve the full 100W output from the KPA-100. 73! Ken Kopp - K0PP ElecraftCovers at rfwave.net or k0pp at arrl.net