Hi all, Just had my arcing power line pole fixed and my noise has dropped off to zero on all HF bands except 160m, fantastic!!! And a result.
A friend of mine said that his noise floor was -110db. Impressive I think. All I know from my spectrum scope is that mine has dropped by about 40db+ but I am curious how you adjust your card input level so you can get a true db reading for the ambient noise floor. I.e. How did my friend arrive at this figure. I have a sound card oscilloscope and a copy of spectrum lab (which is where I compared the before and after results) Could someone explain please. Regards Toby MM0TOB
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