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criterion for choosing one antenna or the other - I was just relating my observations, for what they might be worth, and probably should have emphasized that caveat. Subjectively, though, it seems that the rotary dipole works about the same as the wire dipole with one sloping leg, with the advantage of controlled directivity - no surprise here, right? As a side issue though, it was interesting to note that, at a significant hight , the inverted (or quasi-inverted) Vs did show pronounced directivity. 73, Al Original Message: Unfortunately it will not be possible to do an a/b comparison between two forty meter dipole-like antennas on the same tower, same direction, only separated vertically by 19 feet. They are each in each other's NEAR field and can substantially modify the performance of the other, depending on coax switch configuration and coax lengths. It is entirely possible that the performance of either as you describe them mounted, is worse than if mounted separately, or better. It would not be a good idea to use this comparison to see whether someone ought to REPLACE a hung dipole/InvVee with a rotatable dipole. 73, Guy. -------------------------------------------- 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 |
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