QRN
Revision as of 06:14, 8 June 2008 by G7VRD (talk | contribs) (New page: QRN is "natural interference", as opposed to QRM - "man-made interference". QRN is higher on the long wavelength bands (160, 80, 40), especially at night. What causes QRN)
QRN is "natural interference", as opposed to QRM - "man-made interference".
QRN is higher on the long wavelength bands (160, 80, 40), especially at night.