I built my K1 with the 17m option and now find I want 15m for QRP contests. I don't think it is a good idea to remove components and rebuild for 15m but may do it if I have to. I have the 80 / 160m board and love it. In fact it's 160m that got me hooked on QRP contesting. 73/72, Jim / W1FMR @arrl.net