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Thanks for the input. I suspect you are right about the spacing. If you have the time/means to do some modelling that would be just great. I'd certainly appreciate the help. 73 Bob 5B4AGN, P3F, ZC4ZM ----- Original Message ----- From: "Pete Smith" <n4zr@contesting.com> To: "Bob Henderson" <bob@cytanet.com.cy> Sent: Monday, July 29, 2002 1:30 PM Subject: Re: [Force 12 Talk] Re: C31XRs in SO2R ??? > At 10:41 AM 7/29/02 +0000, you wrote: > >I am thinking of around 30ft, 60ft & 90ft for mine with a Magnum 340N at > >120ft. I'd be interested to know your plans. > > Bob, for what it's worth (free advice is worth what it costs), I think that > spacing is a bit close. Given that tribander stack spacing is a > compromise, the compromise for the next few years wants to emphasize 20 and > 15, not 15 and 10. Without actually modeling it I couldn't be sure, but my > hunch is that you want more on the order of 35 feet, maybe more. The N > yagi is said to be just fine quite close to Force 12 tribanders, so I would > think 35/70/105/120 would be excellent. > > If you like, I have some modeling tools that would let me do a more careful > evaluation of the stack, at least. It sounds like it would be fun to do. > > > 73, Pete N4ZR > > Check out the World HF > Contest Station Database at > www.pvrc.org > > > > > -------------------------------------------- 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 |