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writes: > To: Force12Talk@qth.com > From: Wes Cosand <wz7i@arrl.net> > Subject: [Force 12 Talk] Assembling a EF-240/230H > > I am in the middle of assembling a new EF-240/230H and having a lot of > fun. If I am compulsive about measuring the tuning jumper positions will I > be OK or do I have to take each element plus a 6' section of boom to the > correct height and check the resonant frequency? I haven't tried that technique and it's probably okay but I would assemble the whole antenna and then check the resonance of each element. You can do this at installation time either by running it up and down a tram system or with a crane. This version of the antenna should be easier since F12 uses stiff jumpers now but as far as I'm concerned, the factory measurements are just a place to start - they all need tweaking for final resonance. > > The antenna will be installed at 80 feet, 12 feet above a 12 element Sommer Congratulations on having an expensive, strong steel alloy tubing mast for this BIG load. Cheers, Steve K7LXC TOWER TECH - Professional tower services for commercial and amateur -------------------------------------------- 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 force12@qth.com |
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