Re: [Elecraft] RF Noise in the Neighborhood

I Guys, I know how frustrating this can be. I had the same problem with a power line this last summer. You can have noise miles away off of a power line on the HF bands. Most utility company's have a department to track down RFI interference. They have equipment that will track it down to th

Re: [Elecraft] RF Noise in the Neighborhood

See the article in QST (Apr 2006, pp 41-46) by Jim Hanson W1TRC (SK) about the Ultrasonic RFI detector. Very helpful in locating all sorts of interference issues. I believe that the design has been turned in to a kit. 73 Gene K1NR K2 6K On Mon, 18 Oct 2010 08:26:56 -0700 "Ron D'Eau Claire" w

Re: [Elecraft] RF Noise in the Neighborhood

On 10/18/2010 5:08 AM, Douglas Furton wrote: > Please — any suggestions how I might track down this noise source and quiet > it? There is a very good RFI email reflector, accessible from contesting.com. I've written a tutorial on RFI. It's at http://audiosystemsgroup.com/RFI-Ham.pdf 73, Jim

Re: [Elecraft] RF Noise in the Neighborhood

This clearly is PLC Powerline Comminication. Using HF over mains wires for wideband internet. Especially the "home use" devices are terrible, called Homeplug. Unfortunately our globe is flooded with these devices, sneaking through legislation everywhere. Since mains wires are not defined as antenn

Re: [Elecraft] RF Noise in the Neighborhood

Many streetlights will do the same. Ron AC7AC -Original Message- The powerline noise was masking another noise source that was trashing everything from 80 up to 10m. This noise was about S5-7, but would cycle on an offon for about 40 seconds, off for about 20 seconds then back on.

Re: [Elecraft] RF Noise in the Neighborhood

Went through this myself. S7 to S9 noise appeared out of nowhere and persistent almost 24 hours a day. I hunted for the source with no luck. Then it dawned on me the noise commenced while PECO (utility), Comcast and Verizon were doing "upgrades" in the neighborhood. All utilities are undergroun

Re: [Elecraft] RF Noise in the Neighborhood

Step 1: If it syncs on line as your RFI does, it is Power Line Interference. Call you local power company. They will have the instrumentation to locate the source and if it is their problem they will fix it. If it is a subscriber's problem they will most likely identify the source. Step 2

[Elecraft] RF Noise in the Neighborhood

Dear Electrafters, Perhaps off topic, I write for advice tackling a problem that plagues my K2 and QTH: overwhelming RF noise from a source I cannot identify. I've posted a screen shot of an o'scope trace of the IF output from a parlstar R30 showing the magnitude of this problem at the followin