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#1
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On Sunday, May 8, 2011 12:22:46 PM UTC-5, Tom Rutherford wrote:
The Yagi would be nice, but running out on the balcony and moving it around all the time isn't practical. That's why I wanted something fairly omnidirectional, as much of "omni" as I can get, anyway. Since I remember what my communications instructor told us about loops (they radiate equally poorly in all directions g), I figured this would be the most practical solution for what I want to do. Another possible idea could be the turnstile. That is horizontal, pretty omni, and pretty simple to build. Just a set of crossed dipoles fed 90 degrees out of phase. I think you would have less gain vs the broadside of a dipole, but you wouldn't have the nulls off the ends. |
#2
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![]() wrote in message ... On Sunday, May 8, 2011 12:22:46 PM UTC-5, Tom Rutherford wrote: The Yagi would be nice, but running out on the balcony and moving it around all the time isn't practical. That's why I wanted something fairly omnidirectional, as much of "omni" as I can get, anyway. Since I remember what my communications instructor told us about loops (they radiate equally poorly in all directions g), I figured this would be the most practical solution for what I want to do. Another possible idea could be the turnstile. That is horizontal, pretty omni, and pretty simple to build. Just a set of crossed dipoles fed 90 degrees out of phase. I think you would have less gain vs the broadside of a dipole, but you wouldn't have the nulls off the ends. That's another good idea. Thanks. Are the elements of a turnstile spaced a quarter wavelength apart, or are they pretty much on top of each other? -- -- 73 DE Tom Rutherford, N8EUJ, Burton, MI "She said it was either her or the ham radio. Over." |
#3
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On 5/9/2011 11:00 AM, Tom Rutherford wrote:
wrote in message ... On Sunday, May 8, 2011 12:22:46 PM UTC-5, Tom Rutherford wrote: The Yagi would be nice, but running out on the balcony and moving it around all the time isn't practical. That's why I wanted something fairly omnidirectional, as much of "omni" as I can get, anyway. Since I remember what my communications instructor told us about loops (they radiate equally poorly in all directionsg), I figured this would be the most practical solution for what I want to do. Another possible idea could be the turnstile. That is horizontal, pretty omni, and pretty simple to build. Just a set of crossed dipoles fed 90 degrees out of phase. I think you would have less gain vs the broadside of a dipole, but you wouldn't have the nulls off the ends. That's another good idea. Thanks. Are the elements of a turnstile spaced a quarter wavelength apart, or are they pretty much on top of each other? On top of each other. Fed 90 degrees apart. But I'd try a dipole first. |
#4
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![]() "Jim Lux" wrote in message ... On 5/9/2011 11:00 AM, Tom Rutherford wrote: wrote in message ... On Sunday, May 8, 2011 12:22:46 PM UTC-5, Tom Rutherford wrote: The Yagi would be nice, but running out on the balcony and moving it around all the time isn't practical. That's why I wanted something fairly omnidirectional, as much of "omni" as I can get, anyway. Since I remember what my communications instructor told us about loops (they radiate equally poorly in all directionsg), I figured this would be the most practical solution for what I want to do. Another possible idea could be the turnstile. That is horizontal, pretty omni, and pretty simple to build. Just a set of crossed dipoles fed 90 degrees out of phase. I think you would have less gain vs the broadside of a dipole, but you wouldn't have the nulls off the ends. That's another good idea. Thanks. Are the elements of a turnstile spaced a quarter wavelength apart, or are they pretty much on top of each other? On top of each other. Fed 90 degrees apart. But I'd try a dipole first. Gotcha. Yeah, a dipole would be simple enough. -- -- 73 DE Tom Rutherford, N8EUJ, Burton, MI "She said it was either her or the ham radio. Over." |
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