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>Natan, > >thanks for reply. This antenna was 9 meters above flat concrete roof of a 7 >storey hotel. On a steel mast. Higher than that was not considered required >to work properly. However, there is one thing that we never managed, and >that was discovered from N4ZR reply: - tweaking 40m coil! We just put it up, >and did not tweak it to find better resonance. The other thing is proximity >of steel guywires that were going all the way up to the antenna. Third thing >is that the owner of the antenna did not apply any conductive antioxidant >grease. >I guess, there will be better luck in assembling it next time, 40feet above >the cliff on the beach, with tweaking exercie and nonconductive ropes as >guys... Just a clarification -- I suggested "tweaking" the hairpin inductor to get the best match, while adjusting the shorting bars on the linear loading for the resonant frequency. 73, Pete N4ZR Don't forget to update your entry in the World Contest Station Database http://206.102.70.3/search.htm -------------------------------------------- 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 force12@qth.com |
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