As a none member of the ARRL I can't read the review, so I do not why some of the numbers on the Elecraft and TenTec sites are so different. I get the feeling that one or both companies use a marketing filter worth several dBs ... ;-) I've built two K2s - they work mostly very well - I built them myself - I'm happy - never seen or tried an Orion. vy 73 de toby