Hi All! ?
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? ?I primarily use my IC-7000 for FT8 ops these days, where the latest "In Thing" is SuperFox mode. It's new, and we're all in the learning phase of figuring out how to get the best performance out of it. On the currently running DXPedition (N5J) I've been having some luck with improving my reception/decoding under some circumstances by turning on the Noise Blanker function and playing a bit with the controls - I suspect because the Noise Blanker is helping to squish some of my local QRN without messing with the received SuperFox waveform.
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? ?However, I'd love to have a better understanding of what the Noise Blanker is actually doing, and how the NB Level and NB Width controls affect that. I'm guessing that NB is some kind of peak limiter designed to clip impulse noise (where the clipping level is controlled by NB Level?). But if so it's not obvious what NB Width would do...? (Aurally the effect of the two controls sound very similar to me). Also, is the Noise Blanker upstream of the Rx AGC? It seems like turning NB on boosts the received (good) signal a little (as seen on the waterfall) and I'm wondering whether that's because reducing the incoming noise upstream means the Rx AGC is backing off a little bit.
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? ?Unfortunately my IC-7000 Instruction Manual hasn't been super helpful, other than to tell me that the NB Level control adjusts the noise blanker level and the NB Width control adjusts the noise blanker width... ?:-(
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? ?TIA for any knowledge and advice!
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? ?Richard, ?NC6RJ
