This post provides links to some useful sites and resources to help you identify your noise. Please send us any additional resources or links you know about.
Two common and sometimes misunderstood terms (or Q-codes) are QRM and QRN. The images below provide a high level explanation of the difference between QRM and QRN.
This is a good all-round website for helping learn more about various noise sources: Signal wiki – identifying noise
And this is a good site for HF signal identification.
Noises around the home: Noise sources around the home and
A good reference from ARRL: A reference from ARRL
Sample of Electric Fence noise