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I may be incorrect, but I'm pretty darn sure that each band is independent from each other. 15m was low on my C4XL so I got to the 15m driver, shortened it up using the predrilled holes and the reasonant freq came up. Not as much as I would like, but it came up. The adjustment did not affect 10 or 20. Mitchell Carson wrote: > I have a C3-E that I installed about 6 months ago. WOW! What a fantastic antenna! > > I need to do some minor tuning on it though. When I first assembled it, I mounted it against the side of the tower (at about 20') to check resonance (with a known good 100' length of RG-213). 10m was a wee bit low, so I adjusted 10m up a notch using guidance from the manual. 15 & 20m were fine. Once I had the antenna in place (at 45'), I found that 10m resonance was a bit too high, and 15m resonance was a bit too low. 20m is right on the money. > > In the near future, I'm planning to retune my C3-E. The cautious side of me tells me to tune it one band at a time. The idea is to pivot the antenna on that slick boom-to-mast mount, remove the appropriate element for adjustment, adjust the element, then reassemble and check resonance before proceeding to the next band adjustment. > > I realize that there is some interaction between the elements. I'm inclined to tune the lowest band first (15m), but there again, 15m might be off as a result of previously tuning 10m. I'd rather not waste those special rivets, so I thought it would be worthwhile to run this past the experts first. > > Question: In your opinion, should I tune 15m first then tackle 10m? Or should I tune 10m first then tackle 15m? > > 73 es TNX, > -Mitchell / W5MEC > > -------------------------------------------- > Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. > Force 12 Web site: http://www.qth.com/force12 > > Submissions: send to Force12Talk@qth.com > To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com > Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk > For problems with the list, contact n4zr@qth.com -- 73, Richard Thorne ARS N5ZC (ex KA2DSY, N2BHP, WB5M) Remote Control Airplanes: AMA# 657062 http://www.tcac.net/~rthorne/ -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact n4zr@qth.com |
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