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[QUOTE=&quot;Piggie, post: 45239, member: 2941&quot;]I am sure it was a typo thinking of your own modifications (very impressive aluminum work, exceptional) but just to correct for correctness sake I have Winegard YA-1713 stacked vertically. T, here is something to ponder at the same time. If you have not read here or on AVS my trials and tribulations with wind driven multipath.&nbsp; Seems lately just as I think I understand something I find evidence that could make me wrong again!&nbsp; I had up an old CM 4221A about 20 ft pointing from my house to Gainesville. Everything was fine until the first spring. Analog was still on the air so that helped troubleshoot my problem. I was having a lot of break ups. I then researched and found between reading and looking at one of the stations, WOGX, that used the same antenna to transmit analog and digital what was going on. Wind driven rapid multipath. So I had a second 4221A and read everything I could about combining them. I had already tried a vertical stack which was an abysmal failure.&nbsp; I had an old Radio Shack U-75R I had taken off a tower 15 years ago. I put it up for a temp antenna while I played with the 4221As.&nbsp; Low and behold it was windy the next few days and no rapid multipath fading.&nbsp; Totally an accidental finding.&nbsp; Now. Why was the 4221A so bad at multipath? Because the bays are all stacked vertical, thus giving about the same azimuth aperture as a single bay?&nbsp; Or (here is what you posted just got me thinking) was it the spacial diversity that was picking up signals out of phase?&nbsp; I think it was the former still but worth a ponder.In this danged economy I am finding myself there again! &quot;Doing more and more of what I can with what I got.&quot; (intentional grammar misuse).Good to have met you.Piggie <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad&nbsp; &nbsp; :mad:" />)[/QUOTE]

[QUOTE="Piggie, post: 45239, member: 2941"]I am sure it was a typo thinking of your own modifications (very impressive aluminum work, exceptional) but just to correct for correctness sake I have Winegard YA-1713 stacked vertically. T, here is something to ponder at the same time. If you have not read here or on AVS my trials and tribulations with wind driven multipath. Seems lately just as I think I understand something I find evidence that could make me wrong again! I had up an old CM 4221A about 20 ft pointing from my house to Gainesville. Everything was fine until the first spring. Analog was still on the air so that helped troubleshoot my problem. I was having a lot of break ups. I then researched and found between reading and looking at one of the stations, WOGX, that used the same antenna to transmit analog and digital what was going on. Wind driven rapid multipath. So I had a second 4221A and read everything I could about combining them. I had already tried a vertical stack which was an abysmal failure. I had an old Radio Shack U-75R I had taken off a tower 15 years ago. I put it up for a temp antenna while I played with the 4221As. Low and behold it was windy the next few days and no rapid multipath fading. Totally an accidental finding. Now. Why was the 4221A so bad at multipath? Because the bays are all stacked vertical, thus giving about the same azimuth aperture as a single bay? Or (here is what you posted just got me thinking) was it the spacial diversity that was picking up signals out of phase? I think it was the former still but worth a ponder. In this danged economy I am finding myself there again! "Doing more and more of what I can with what I got." (intentional grammar misuse). Good to have met you. Piggie :@)[/QUOTE]

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