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I currently have a C31XR on 90' of Rohn 25G (actually 88'). The guys are at 28', 56', & ~84'. I picked up a second used C31XR locally with potential plans to stack them, however this may not be possible on the current tower. Due to the 80% guy distance (72') if I put the second C31 at 56' I don't think it will clear the top guy. No, I can't move the guy point for the top guy wire out. Also I'm a also bit concerned about the wind load on 25G, though I've seen 3 TH7's on 100+' of 25G before. Curious if anyone has done this and if it will in fact fit. Otherwise an alternative is to put the second C31 on another tower at a lower height (likely 40-60'). I wondered if anyone has an EZNEC model for a C31 they'd be willing to share since if this is the approach I'd like to optimize the height of the second C31 on the separate tower to fill in the nulls of the current C31. Granted the stack would be more flexible but if it won't fit, it won't fit and it looks too close to me on paper. I'd also like to hear from anyone who has stacked a C31XR and a C3E as the smaller C3E would fit on the 25G and could go on a 300 degree swing gate instead of a ring rotor. Thanks for your input. 73's Bob - N4PQX -------------------------------------------- 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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