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[QUOTE=&quot;Piggie, post: 45816, member: 2941&quot;]This is the same level of &quot;doubt&quot; I have about the antenna.&nbsp; Not the doubt that the antenna can receive VHF but how it receives VHF. It will be interesting to see it tested. My gut feeling says there is little difference in a screen behind it to a rods behind it.That even though that screen was designed as a UHF reflector, it's also very close to a half wave at hi VHF. This means it will resonant along it's horizontal axis at hi VHF.&nbsp; This part I have little to no doubt.&nbsp; As can be seen from the directors and reflector of a pure yagi, a 1/2 dipole doesn't have to be split in the middle to resonant.Now how exactly is it coupled into the feed line (not directly like feed line shield pick up) is the question.&nbsp; Is it coupled into the bow tie whiskers? Is it coupled into the feed lines between the whiskers (though they run vertically which makes them not as likely to me). Or is it a combination of the whiskers and the feedlines?&nbsp; Even without measuring the feedlines, that is also the form of an Inverted L dipole.&nbsp;&nbsp; IF and only if (supposing without measuring) then the whisker and part of the feed lines could form close to a 1/2 wave that was not feed in the middle but more toward a 1/3-2/3 point.&nbsp; That would not be the best feed point but would seem better than end feeding a 1/8 wave of metal.&nbsp; And even if the vertical feedlines didn't do a single bit of coupling of the signal they do provide the needed resonance. Now this all supposes that the vertical feedlines even add in this way.&nbsp; Purely a guess, not based in any fact.T, you may have the books I no longer have or can't remember but is there a dipole style antenna that is a whole wavelength that is feed at the 1/4-3/4 wavelength point? I seem one in my mind from a long time ago reading, but can't remember the overall length, or the impedenace but I seem to remember seeing a dipole being feed off center for some reason.[/QUOTE]

[QUOTE="Piggie, post: 45816, member: 2941"]This is the same level of "doubt" I have about the antenna. Not the doubt that the antenna can receive VHF but how it receives VHF. It will be interesting to see it tested. My gut feeling says there is little difference in a screen behind it to a rods behind it. That even though that screen was designed as a UHF reflector, it's also very close to a half wave at hi VHF. This means it will resonant along it's horizontal axis at hi VHF. This part I have little to no doubt. As can be seen from the directors and reflector of a pure yagi, a 1/2 dipole doesn't have to be split in the middle to resonant. Now how exactly is it coupled into the feed line (not directly like feed line shield pick up) is the question. Is it coupled into the bow tie whiskers? Is it coupled into the feed lines between the whiskers (though they run vertically which makes them not as likely to me). Or is it a combination of the whiskers and the feedlines? Even without measuring the feedlines, that is also the form of an Inverted L dipole. IF and only if (supposing without measuring) then the whisker and part of the feed lines could form close to a 1/2 wave that was not feed in the middle but more toward a 1/3-2/3 point. That would not be the best feed point but would seem better than end feeding a 1/8 wave of metal. And even if the vertical feedlines didn't do a single bit of coupling of the signal they do provide the needed resonance. Now this all supposes that the vertical feedlines even add in this way. Purely a guess, not based in any fact. T, you may have the books I no longer have or can't remember but is there a dipole style antenna that is a whole wavelength that is feed at the 1/4-3/4 wavelength point? I seem one in my mind from a long time ago reading, but can't remember the overall length, or the impedenace but I seem to remember seeing a dipole being feed off center for some reason.[/QUOTE]

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