Rather than reinvent the wheel, I'm sure someone has the answer for this. I have a KWM-2A and I want to get crystals for 30, 17, and 12. The crystals cover 200kc, but 12 and 17 are only 100kc, and 30 is only 50kc. What crystals frequencies should I order from International Crystal? I believe the holder is HC50/U. Mike W4UM