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towers and couldn't resist adding my two cents. We live in an area with a "12 feet above the roof line" ordinance. Unfortunately, our city is pretty 'vigilant' about their ordinances so I couldn't just say 'to h... with it.' I have used roof towers for many years and find them a great compromise and certainly much more economical. We have a two story house; the two story part being about 35 feet long. I did try a roof mounted Butternut. It worked OK but was quite noisy. Maybe it was picking up noise from the house. Anyway, about 8 years ago, I replaced the vertical with a HyGain TH3MK4 tribander mounted on a Glen Martin 4.5 foot tower. It worked very well for several years. More recently, I reinforced the other end of the roof and put up a Glen Martin 9 ft, 18.5 sq ft capacity tower with a Force-12 C4EXL. That was a blast to get up on the roof! Anyway... it beats the TH3 to pieces. Even on 20 where it only has 2 active elements, it busts pileups easily running 100 watts. BTW... I left the smaller 'quad pod' up there and mounted a CC 5 element 6 meter beam and CC 10X10 2 meter beam on it. Again, would be nice to be higher but still works better than expected, particularly on 2 meter SSB. I'd strongly recommend the Glen Martin towers. The finish on the 8 year old tower is as good as that on the 1 year old tower. Also, assembling F-12 products is fun. The directions are very good. Natan is also a great resource! Back to verticals... I have had very good results with the GAP Voyager IV. I know its low Q and all but it just gets out. Its also very quiet. Also handles the 1.2 KW from my AL572 amp. Now... its a lot more bother than the F-12 40 meter vertical (GAP must be guyed) and probably won't last as long. Still, it gets me on 160 (just OK), 80 and 40 (gangbusters) from a suburban lot. I would very much like to try the Sigma 40. Maybe some other time! Good luck. 73 de Bill Roberts/K8DXX -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force12 Web Site: http://www.force12inc.com To Submit Message to the List: Force12Talk@qth.com To unsubscribe and view the Message Archive: see http://qth.com/force12/list For problems with the list: contact n4zr@qth.com |
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