Have a local ham buddy who was getting killed by high noise on most HF bands. He is technically proficient and did everything else around the place to eliminate all the usual suspects that he could. He says he saw a device at HRO but thought it was pricey. Looked around and saw apparently the same thing on eBay. They are out of China but he got one and it works perfectly as advertised and with the adjustments is ..... Eliminating ALL of his noise problems on HF. There are quite a few different models but they are all like $50-70 bucks so the price seems right to try if you're plagued by noise that you can't get rid of by other means. Providing a link here to just one of them. Check them out for yourself.
PLZ-QRM Eliminator (1-30 ) HF Bands Aluminum Alloy Outcase Phase R1W0 | eBay
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