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It has been a long standing policy of the ARRL not to publish any gain or F/B figures in their advertising. There are lies, damned lies and antenna gain claims (apologies to the original author) Jim > Kenny, > > What you say is true. However, I would very much trust the figures that > W4RNL quotes as all his figures are derived from computer models (just > like F12). Also, don't the ARRL refuse to accept gain figures from > manufacturers unless they are supported by computer models? Therefore I > have no reason to doubt the figures in their own publication. Besides, > the larger antenna in the ARRL Antenna Book is showing a little bit more > gain than the smaller antenna of W4RNL which going by the difference in > boomlength seems about right. As the T10 is somewhere in the middle > with regards boomlength, it's not unreasonable to assume the gain is > somewhere in the middle also. This is not like comparing tribanders > with different trap designs (and hence, different losses), these logs > all use non-loaded elements and appear to have a very similar design > constant. > > Andrew Williamson GI0NWG / AC6WI > Homepage = http://www.gi0nwg.freeserve.co.uk/ -------------------------------------------- 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 |