Does VERTICAL angle matter? - Canadian TV, Computing and Home Theatre Forums

eyeQ · 2006-02-09, 05:11 PM

How weird is this...

Prior to my putting my Channel Master 4228 antenna on the mast, it was LYING DOWN on the roof. I went inside, happened to check the TV, and was happy to see that I got a bunch of channels already.

But then, once the antenna was vertical, I LOST SOME!! No amount of rotation, for the past 2 weeks, has gotten them back.

That meant that the antenna did better (for some ch's), lying on an averagely-sloped house roof, say 20 deg from straight up.

So, is it normal for the VERTICAL angle of an antenna to make a diff? Or just the rotated direction?

And most importantly, what can I do? Has anyone ever angled their antenna up a little bit? Maybe by using a piece of wood?

These are the ones that were 'catchable' when the antenna was lying down:
7-1 WKBW [it would be my first ABC]
29-1 Fox WUTV 29
29-2 Fox WUTV 29
29-3 Fox WUTV 29
21-1 WXXI
21-2 WXXI
21-3 WXXI
21-4 WXXI

stampeder · 2006-02-09, 06:00 PM

The two-word reason for weird reception by a horizontally placed antenna is multipath interference. TomF.1 already gave you an excellent response in post #47 of the ON - East of Oshawa to Ottawa - OTA Results thread (yours is #45):

http://www.digitalhomecanada.com/for...ad.php?t=33034

Also here's a post on antenna tilting from the OTA Installation Tips And Tricks thread:

http://www.digitalhomecanada.com/for...3&postcount=80

mlord · 2008-11-16, 10:35 PM

My dual PR-8800 array works better tilted than non-tilted, when trying to bring in the very-distant PBS station from Norwood. I've not measured the angle, but it looks to be about 10 degrees upward from vertical.

Cheers

2006-02-09, 05:11 PM	#1
eyeQ Join Date: Dec 2005 Location: Bowmanville, ON. Antenna: Channel Master 4228; Rotor: Zenith ZENRTR1; HD Tuner: Samsung SIR-T451 Posts: 40	Does VERTICAL angle matter? How weird is this... Prior to my putting my Channel Master 4228 antenna on the mast, it was LYING DOWN on the roof. I went inside, happened to check the TV, and was happy to see that I got a bunch of channels already. But then, once the antenna was vertical, I LOST SOME!! No amount of rotation, for the past 2 weeks, has gotten them back. That meant that the antenna did better (for some ch's), lying on an averagely-sloped house roof, say 20 deg from straight up. So, is it normal for the VERTICAL angle of an antenna to make a diff? Or just the rotated direction? And most importantly, what can I do? Has anyone ever angled their antenna up a little bit? Maybe by using a piece of wood? These are the ones that were 'catchable' when the antenna was lying down: 7-1 WKBW [it would be my first ABC] 29-1 Fox WUTV 29 29-2 Fox WUTV 29 29-3 Fox WUTV 29 21-1 WXXI 21-2 WXXI 21-3 WXXI 21-4 WXXI

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2006-02-09, 06:00 PM	#2
stampeder OTA Forum Moderator Join Date: Jan 2005 Location: North Delta, BC (96Av x 116St) Posts: 23,338	The two-word reason for weird reception by a horizontally placed antenna is multipath interference. TomF.1 already gave you an excellent response in post #47 of the ON - East of Oshawa to Ottawa - OTA Results thread (yours is #45): http://www.digitalhomecanada.com/for...ad.php?t=33034 Also here's a post on antenna tilting from the OTA Installation Tips And Tricks thread: http://www.digitalhomecanada.com/for...3&postcount=80

2008-11-16, 10:35 PM	#3
mlord Veteran Join Date: Nov 2006 Posts: 1,545	My dual PR-8800 array works better tilted than non-tilted, when trying to bring in the very-distant PBS station from Norwood. I've not measured the angle, but it looks to be about 10 degrees upward from vertical. Cheers