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There has been a rather strange discussion going on about the use of ropes in antenna elements over on the Tower Talk Reflector. I thought it useful to explain why we don't use ropes in our products. We used the latest software and real world experience in the design of our products including the taper design of our elements. Since our designs are contemporary, as opposed to old designs done before proper software was available, it was apparent that foreign dampening of the element was not needed if the element was designed properly. Outdated designs may well benefit from rope in the element, but there is no reason to do so now that proper design tools are available to prevent that need. A properly designed element will not oscillate and will withstand wind and ice loads. A rope in our elements destroys the flex characteristic of the element and may well cause the element to fail ultimately. Furthermore, a rope in our elements may collect moisture and finally freeze preventing the element from flexing and promoting catastrophic failure since the ability of the element to shed wind and ice loads has been undermined. Old mechanical and electrical designs are still with us, just as publicized gain claims that are impossible to realize or verify. Some of those users and manufacturers/consultants of these products would like you to believe we do most everything wrong..............we know better as does the informed consumer public! We do fell rather strongly against using rope in our elements to the extent that the use of rope in the elements will void the manufacturers warranty. If you have a problem with vibration, please contact us for resolution. 73 Natan W6XR Force 12 East Ithaca, NY FN12sk force12@qth.com -------------------------------------------- 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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