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eHam Forums => Misc => Topic started by: K2MMT on August 27, 2002, 10:13:37 AM



Title: Extremelly loud Static Noise from AC lines. QRN !
Post by: K2MMT on August 27, 2002, 10:13:37 AM
Hellllppppp Just recently I started to hear an S9 noise level at it's highest range in the 14 mhz area. It tapers off in both directions. So - I can no longer operate on 20 meters (CW)/.

I use an 817 QRP and a stealth long wire as I live in a condo.

I traced this new noise to my AC lines, and assume it comes from Con Edison..

What can I do about this??

Thanks, Peter K2MMT
email: peter@brandenberg.tv  


Title: Extremelly loud Static Noise from AC lines. QRN !
Post by: K0BG on August 27, 2002, 12:43:54 PM
This doesn't sound like Con-Ed to me.

I'd start looking with an AM radio or ham rig with a coax loop antenna and start looking for the real problem. It could be anything from a touch controlled lamp to a bad door bell transformer. If you are sure it is Con-Ed, call them. I'm sure they are very aware of the FCC's recent clamp down on electrical induced noise.

Alan, KØBG


Title: Extremelly loud Static Noise from AC lines. QRN !
Post by: VA3HIE on January 31, 2003, 12:56:41 AM
let's get it straight... qrN - natural
qrM -  man-made,
AC lines were man made last time I checked... or did they start growing somewhere in the jungle???


Title: Extremelly loud Static Noise from AC lines. QRN !
Post by: N6HBJ on February 02, 2003, 02:18:17 AM
A noise canceller might help if it is truly QRM and coming from a SINGLE SOURCE. Check out the AES catalouge for the "Timewave ANC-4".


Title: Extremelly loud Static Noise from AC lines. QRN !
Post by: N6HBJ on February 02, 2003, 02:19:36 AM
A noise canceller might help if it is truly QRM and coming from a SINGLE SOURCE. Check out the AES catalouge for the "Timewave ANC-4".


Title: Extremelly loud Static Noise from AC lines. QRN !
Post by: KA7GKN on April 25, 2003, 12:37:52 AM
read my dittie in the rfi forum about halogen lights and try turning off and unplugging any and all halogen low voltage lighting the switching power supplies are awful noise generators!

marty ka7gkn