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A few weeks ago, I posted a problem I was having with my Dxer, and or it's coax. The problem was that when the antenna was rotated, there was an intermitent loss of signal and the SWR would rise. This indicated a bad coax, balun, or loose balun lead connection to the driven element. Replacing the LMR400 coax on both 20 and 15/17 meters with flexable Milspec 214 solved the problem on the 20 meters but, the problem on 17/15 meters is worse than it was before. The 15/17 meter antenna sounds dead at times untill I apply power... then the receiver comes alive for a while as if RF arcing somehow bridged the gap of a loose connection. The loss of signal is still happening when the antenna is rotated or strong winds are moving the elements about. The boom and elements are tight and the antenna is on the tower about 2 years. The only thing left to check would be the balun, balun connections and possibly the bolts and nuts that hold the balun leads to the dirven element. I should mention that after I tightened the nuts that hold the balun leads to the driven elements, I sprayed them with Rustoleum. I don't think this would cause a problem since none of the paint is where it shouldn't be, all contact points are clean an shinny. The connectors on the new cable were installed by Cable Experts. Again, the intermitent loss of signal is caused by any movment of the driven element by rotating the antenna or when there's a strong wind. Applying RF seems to bridge the gap of the loose connection for a while untill the antenn is rotated and the driven element starts to bounce around. Any suggestions would be appreciated. 73, Tony AB2CJ -------------------------------------------- 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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