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iHeart owned station here HD/iBOC transmitter is causing adjacent interference way outside their spectrum. How do I get them to fix it?

NickD said:
The Sony XDRS3HD is one of the best radios available. DXing requires a great radio that can pull a weak signal out of the noise.
A cheap SDR might overload and put spurs all over the spectrum. However, the spurs and intermod would be reduced at a much greater level than the main carrier if you attenuate the signal. If you attenuate 6dB, then the spurs and intermod should drop more than 6dB all else being equal. That’s how you know it’s being generated in the receiver.
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Got a question for you. I've had the above mentioned Sony radio for a long time which I use as the tuner for my sound system. It's listed 82 dB adjacent channel selectivity is amazing unless you're trying to tune into a weaker distant station adjacent to a "local" one broadcasting in HD Digital. (The Sony is connected to a 5 element Yagi ant which is fed into a 15 db gain FM sig amp.) I'm wondering if an adjustable FM trap could remove that 50 kHz noisy overlap without attenuating the desired signal ? Any thoughts?
 
As an update to this it appears they realized there was a problem and took down their HD Exciter. It's been off for a few weeks now. The issue I pointed out is gone and there is no longer adjacent interference to other stations.

Not sure why they'd leave it off for weeks if there wasn't an issue or they are doing something with it...
 
pclover said:
Not sure why they'd leave it off for weeks if there wasn't an issue or they are doing something with it...
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Some of the broadcast groups are turning off non-productive HD channels.
 
DavidEduardo said:
Some of the broadcast groups are turning off non-productive HD channels.
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I guess that's possible. With that said tho, I'd find it a little odd if iHeart decided to kill off HD service of KTOM here. Seems the savings would be minimal given the HD-1 stream is free of ongoing costs to iBiquity/Xperi.

They did have HD-2 on it with "Star" programming so they turned that off so perhaps you are right.
 
pclover said:
I guess that's possible. With that said tho, I'd find it a little odd if iHeart decided to kill off HD service of KTOM here. Seems the savings would be minimal given the HD-1 stream is free of ongoing costs to iBiquity/Xperi.
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One more thing to maintain.
pclover said:
They did have HD-2 on it with "Star" programming so they turned that off so perhaps you are right.
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The bigger groups are turning the 2,3,and 4 HDs off. Some are killing HD totally.
 
In the long ongoing thread... Looks like they turned their HD Exciter back on.

This time around though no noise and it's clean without adjacent interference. I think pretty obvious now there was an issue they corrected. I guess it's fixed now :)
 
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