I am looking for suggestions to help identify a local noise that I am experiencing on topband. It's characteristics are; - bandwidth approximately 15 kHz - amplitude relatively constant - centre freq
I shut down all of the circuits in my house other than my shack and it did not disappear. Has anyone experienced something similar? Constantly. You took the right first step and determined that the n
It's characteristics are; - bandwidth approximately 15 kHz - amplitude relatively constant - centre frequency seems to vary in small steps over time, no real pattern. - right now the centre frequency
Some switching power supplies are frequency-jittered to spread their spectrum and enable their host devices to meet FCC or Industry Canada line-conducted emissions limits. Also some of the newer ligh
I realize this won't help but I have a similar noise. Mine is about 24 kHz wide and drifts up/down considerably more than yours. The drift seems related to outside temperature. Here's the real kicker
Some of the line-conducted emissions can radiate from the power distribution circuits - especially with overhead service Charlie, K4OTV I realize this won't help but I have a similar noise. Mine is a
The switching frequency of switching power supplies can vary with the burden on the supply as well as ambient temperature. If it's sensitive to outdoor temperature could be the electric utility meter
Thanks for all who responded with comments and suggestions in reply to my query. I will take them all into consideration during my quest to eliminate the source of my noise. I will also let you know
Good luck, Rick! I expect that it will require a good bit of "sleuthing" to find the source(s) - but then, eliminating the source is another matter entirely, if it's coming from a neighbor! 73, Charl