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WNB doesn't seem to do anything?
Answers
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WNB is applied before AGC-T so adjusting AGC-T will not affect WNB.
Dave wo2x
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Bill, that seems a simple conclusion except that it seems to match the examples posted on the web. The second video is rather extreme and is certainly an arcing HT line but the example I first posted is a reduction in wide band across the spectrum noise. I think this should have some effect as it is shown in the video.0
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Dave, thank you for that information. A good thing to know.0
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Yes. Same with the DAX I&Q output. DAX IQ is not affected by AGC-T or AGC (fast, medium, slow).
Dave wo2x
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Also good to know. How did you find this out? Inside contact? A great crystal ball? Inquiring minds want to know. 73, Jim0
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By observing the I&Q output into Skimmer. You can watch while adjusting AGC-T or AGC and there is no change in Skimmer.
No crystal ball needed :-) Although I wouldn't mind owning one.
Dave wo2x
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James, the reason I said that is because the WNB is very effective and works wonders, at least for me. Some time 40M is not even usable if it were not for WNB. So on the correct type of noise is works. Wrong noise? it does not.
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Bill, I don't doubt you and don't disagree. It's just when I saw that first video of the overall reduction in band noise and the signals just popping up, I wondered why I could not experience that as well. It sure looks like what I see but apparently, I am wrong. I'll include the link here so you can see what I am referencing. Thanks for all your input. Jim https://www.youtube.com/watch?v=5XSbbZMvIbU0
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Jim What you can do while sheltering in place (what we need to do in NJ) is try shutting down all breakers in your house to see if the noise is coming from your own house. WNB works on some noise but it is a band aid. The true fix is to identify the source of noise and resolve it (if possible). I’ve had the power company fix insulators on 3 poles and fix over a half dozen bad street lights. Dave wo2x0
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Half way there keep goin we got ur back!
Willie AB8WD0 -
Yep. Sheltering in place here also. county has us shut down except for essential business.....We have to social distance from the deer and bears. So that gives me time to tinker with this noise issue. I am aware of some sources but they are not across an entire band. My under cabinet lights put out a lot of junk on 20 M but not the other bands. My clothes washer puts out a wide band on 40 Meters..... but the across the entire band with these devices shut off still shows an S meter level of 4.5 to 5 or about -100 dBM. I had expected the noise level to drop with the WNB on as it did in the videos but does not. Tomorrow I will shut down the remaining breakers as I did some time ago. At that time it was traced to the light dimmers. I have eliminated most of them, changing to a regular toggle switch. I do have HT lines about a 1/4 to 1/2 mile from here running through the woods. The fun goes on..... 73 All, Jim0
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Thank you, John. I love the operation and display of the Flex. I also have among my other rigs, a TS 990 S which costs a bunch more but I only use the 6500. However, the NR actually works on the Kenwood. It does not actually have a WNB.
OK, so I conclude that my power line noise is not the kind of noise the WNB is effective for. I don't see the tracking notch filters work either but I'll experiment with them further. I brought in the notch for AM carriers and parked it right on top of an offending carrier. Then selected very deep. Results? NADA. nothing. 73, Jim0
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