Re: Strong QRN on the Tropical bands
QRN for natural. Thunder storms, atmospherics the sun and imported muck from Jupiter.
QRM for man made. Modulated or not, intentional or not so SMPS, lightbulbs, arc welding, other people's harmonics, harmonic series from telly line output and scan , fridge clicks, ADSL, VDSL, jamming, OTH radars, car ignition, touch-lamps, Spurii from anything.
THe deciding factor is mankind. QRN predated us and will go on after us.
QRM can be stopped if we change what we do.
David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
|