On 6/3/2013 11:13 AM, Terry Schieler wrote:
Replaced it with a Netgear and birdies are gone. Don't have the specific model number in front of me.
Could you please look it up and post it for us? Mfrs who build stuff that's free of RF trash should be rewarded with our business, but many major mfrs make "good, better, best" products.
As to cleaning RF trash with ferrite chokes -- to be effective, they must be "tuned" (by choosing the "right" mix and winding multiple turns) to be effective. Chokes can reduce ONLY the part of the trash radiated by the cable, but will have no effect on what is radiated directly by the equipment due to poor shielding and poor circuit layout. If the cables are electrically long (longer than about 0.05 wavelength), chokes are needed at both ends, because the equipment on both ends can be a source of the trash. And don't forget the power supply cables, both on the low voltage side and on the 120V side.
"I tried some beads but they didn't work" usually means that the person doesn't understand how ferrite chokes work. Study http://k9yc.com/RFI-Ham.pdf
73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
