The Official AVS Antenna and Related Hardware Topic! - Page 542 - AVS Forum
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post #16231 of 16235 Old 07-03-2014, 11:55 AM
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Originally Posted by deltaguy View Post
If 12.1 continues without problems, you're good to go. I wouldn't assume that interference can be ruled out by the microwave not causing a problem. All electrical devices are not created equal.
Well now I am back to square one again.

Tried a new antenna& same issue again.swing the mounting arm gets 12.1 to work but pushing it back to put the TV away in the cabinet - stops 12.1 from working.

Something is interfering with it.

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post #16232 of 16235 Old 07-03-2014, 03:31 PM
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What new antenna did you try?

The manual says:

"Note: The ANT1400 may work well sitting on your TV or other components. However, because electronic components (like your TV) can sometimes interfere with the antenna's reception, you might notice an effect on the antenna's
performance. Likewise, placing the antenna on a metal surface may interfere with reception. If the antenna isn't performing as well as expected, try moving it away from the component or placing it on another surface. Then, re-scan for channels on your TV or converter box."
http://manuals.solidsignal.com/ANT1400_Manual.pdf

I'm very skeptical about claims for an antenna being multi-directional. Notice that CH12 is almost at a right angle from your other channels.

If your tests tell you that the antenna needs to be further away from the TV, then you must believe your test results and go to plan B.

Other posters have told you that CH12 is on VHF, which is more prone to electrical interference, and your all-channel antenna may not perform as well on VHF as it does on UHF. I agree with them.

If you can not measure it, you can not improve it.
Lord Kelvin, 1883
www.megalithia.com/elect/aerialsite/dttpoorman.html

Last edited by rabbit73; 07-03-2014 at 05:24 PM.
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post #16233 of 16235 Old 07-03-2014, 03:42 PM
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Something is interfering with it.
Well, duh! You put it right behind the TV and it fails. You move the TV away from the antenna and it works.

This shouldn't be hard to figure out....
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post #16234 of 16235 Old 07-08-2014, 08:16 AM
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Charles Rhodes article on Inter-Band RFI:

http://www.tvtechnology.com/digital-...s-worry/271017

Some of you folks will certainly find this of interest.

Tech support for Antennas Direct
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post #16235 of 16235 Old 07-09-2014, 01:38 PM
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Charles Rhodes article on Inter-Band RFI:

http://www.tvtechnology.com/digital-...s-worry/271017

Some of you folks will certainly find this of interest.
I did. I have a comment. RF frequencies intersect, whether there are filters on a receiver or not. Filters can prevent some reception problems, but cannot stop RF from intersecting.
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