The biggest sources in my QTH are
1) Weenergies: Somewhere there's a bad connection on a power line (although this has been better than usual lately)
2) The smallest wall-wart in my house
3) X10. Lamp modules, mostly, but of course there's noise when issuing a command.
4) Ethernet. Nothing I've tried gets rid of the hash generated by my network. Although, it's nowhere near as offensive as the other sources.
I have a couple surveillance cameras that make noise on HF. I just turn them off if they are a bother, but I could see that not being an option if the cameras were on a close neighbor's house.
My Linksys WRT54G sits on a bench under my operating position and creates very narrow birdies on the following frequencies:
73 de Bob - AB8MA
73 DE Charles, N5PVL
I have it on 14.030 also. Dang!
Electric fence charger.
Washing machine - that one was horrible.
I've not had any noticeable problems with CFL, and I once had every light on then off in the entire house to no audible change.
This Space Intentionally Left Blank
The most powerful noise source affecting ham radio and AM broadcasting is LIGHTNING, not man made, but Nature's QRN, can disrupt 160, 80 and 60 M and AM BC signals for most of the summer season.
Storms up to 50 miles away in daylight can wipe you out and at night, anywhere in North America can crash thru my QSOs.
Some annoying man made noise comes from small kitchen appliances like electric mixers and blenders !
Noisy motors send out spark noise thru the AC cords and into the house wiring.
My curly light bulbs seem rather quiet here.
Last edited by K8JD; 12-06-2012 at 04:42 AM.
73.....JD, FISTS #3853,cc 455,SKCC # 1395,tribune #12,
Official US Taxpayer
In my area:
1. Grow Lights... Three of them within a few miles are destroying the ham bands for about a two mile radius... five hams affected... One loses all of HF every night with 30 over S9 signal. I only loose 40 and 30 meters each night with a 10 to 15 over S9 signal.
2. Power Line Noise, power company is good about fixing
3. Little devices with motors in them... Like my wife's food chopper...
4. The other five hams living within 1/2 mile of me... They operate too much... All but for the one who looses all of HF every night...
Long saga of the RFI on my Web Site...
For equipment reviews and setups see: