Dear Ten-Tec, I love my Omni-VI. But I have a problem which perhaps you could help with. On 20m, my Omni VI seems to put out an excessive amount of third harmonics (in the 42 MHz region). Is there something I can do about this? 2nd harmonics from 15m, and 6th harmonics from 40m, which falls also in this 42 MHz region seems low. Thanks in advance and 73 Kok Chen, AA6TY kchen@apple.com Apple Computer, Inc.