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[QUOTE=&quot;tballister, post: 45325, member: 5087&quot;]RE: WOGX and the 4221A vs U-75RThis is the kind of story that makes me wish I had a 3000 mile long piece of coax.It would have been enlightening to have had the opportunity to do a comparison of those two installations; to have been able to compare not only signal levels but also to have stared at the two waveforms on the spectrum analyzer for a while.&nbsp; The questions are how flat was the waveform for each antenna, and to what degree do any observable serrations vary over time?I could not find any vertical or horizontal polar pattern specs for either antenna.&nbsp; I have to say this is one thing I appreciate about the Winegard Company.&nbsp; What ever they've got, they've got, and they're not afraid to publish real engineering data.I went to Winegard to find comparables to see what their characteristic polar patterns were.&nbsp; Their HD4400 (a 4-Bay BowTie), as a comparable to the 4221A, shows a horizontal 3 dB beamwidth of 46 degrees at Ch 50 (close to WOGX's 51).&nbsp; Their HD9075 (a Yagi), as a comparable to the U-75R, shows a beamwidth of 32 degrees.So this may have been a factor; maybe some reflections creeping in an out of the aperture.&nbsp; But the HD9075 also shows about 3dB higher gain than the HD4400.&nbsp; This could also have been a factor; maybe just enough additional margin to keep you above the cliff.If we had some real data for the 4221 and U-75R maybe we could draw some conclusions.&nbsp; Sigh.Wish I could've seen 'em...t[/QUOTE]

[QUOTE="tballister, post: 45325, member: 5087"][b]RE: WOGX and the 4221A vs U-75R[/b] This is the kind of story that makes me wish I had a 3000 mile long piece of coax. It would have been enlightening to have had the opportunity to do a comparison of those two installations; to have been able to compare not only signal levels but also to have stared at the two waveforms on the spectrum analyzer for a while. The questions are how flat was the waveform for each antenna, and to what degree do any observable serrations vary over time? I could not find any vertical or horizontal polar pattern specs for either antenna. I have to say this is one thing I appreciate about the Winegard Company. What ever they've got, they've got, and they're not afraid to publish real engineering data. I went to Winegard to find comparables to see what their characteristic polar patterns were. Their HD4400 (a 4-Bay BowTie), as a comparable to the 4221A, shows a horizontal 3 dB beamwidth of 46 degrees at Ch 50 (close to WOGX's 51). Their HD9075 (a Yagi), as a comparable to the U-75R, shows a beamwidth of 32 degrees. So this may have been a factor; maybe some reflections creeping in an out of the aperture. But the HD9075 also shows about 3dB higher gain than the HD4400. This could also have been a factor; maybe just enough additional margin to keep you above the cliff. If we had some real data for the 4221 and U-75R maybe we could draw some conclusions. Sigh. Wish I could've seen 'em... t[/QUOTE]

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