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This seminar is as presented at the August 2021 QSO Today Ham Expo, and is an educational seminar to help both new and experienced amateurs who are on HF and finding themselves plagued with noise. We'll learn what "noise" is, about the various sources of noise, and how to mitigate those noises using a variety of techniques. This will be followed with information on using a low cost SDR and loop antenna to characterize your noise environment.