[RFI] need ideas on hunting down QRN-like noise source - .wav files

[Scott Ginsburg]

Alex, KR1ST, has done me a huge favor by posting
a couple of .wav files on his website which contain
about 10 seconds each of my HF noise, one recorded
on AM, the other on upper sideband.

They are:

http://www.kr1st.com/k1oa/k1oanoise-20M-AM-6-15-04.wav
http://www.kr1st.com/k1oa/k1oanoise-20M-USB-6-15-04.wav

If anyone needs longer samples please let me know and
I can generate another file.

					tnx and 73,
					Scott, K1OA


> Can you record this noise at it's worse and put it in a .wav file so we can
> listen to it. Hearing it can give us some ideas.
> 
> 
> ----- Original Message ----- 
> From: "Scott Ginsburg" <k1oa at comcast.net>
> To: <rfi at contesting.com>
> Sent: Monday, June 14, 2004 8:50 PM
> Subject: [RFI] need ideas on hunting down QRN-like noise source
> 
> 
> 
>>I'm currently plagued with two sources of HF RFI, and for the
>>moment am concentrating on locating one of them. Any help
>>I can get from the RFI sleuths on the list would be greatly
>>appreciated!
>>
>>The noise in question showed up about a month ago, and appears
>>as a combination of white noise and random, rapid static crashes.
>>The static crashes, or bursts, sound a lot like heavy QRN.
>>
>>It is typically the loudest on 14 MHz, and can be heard from 7-24 MHz
>>when it's at its worst, with peaks on 14 MHz of 10 over S9. I hear no
>>buzzing when listening on AM. My noise blanker has no effect.
>>
>>Its presence can't be correlated with weather. I hear it on both wet
>>and dry days, wind or no wind.
>>
>>It seems to peak from a certain direction when I listen on my HF log
>>periodic. I've driven the neighborhood streets (up to 2 mi away) with my
>>706 and hamstick in the car and can hear what I think is the noise in
>>certain locations, but never loud enough to be a "smoking gun". I
>>verified it's not coming from my house, by killing power and listening
>>in the driveway on my 706 to the noise.
>>
>>Early morning is typically very quiet. At 6:30 AM local time I usually
>>hear only silence, or a few weak bursts of noise which sound like the
>>problem. It typically peaks by noon. I almost always hear it in the
>>evening and at night.
>>
>>Any hints anyone might have as to what a possible source might be or
>>the best way to continue trying to track this down would be
>>appreciated.
>>
>>                                                  73,
>>                                                  Scott, K1OA
>>
>>
>>_______________________________________________
>>RFI mailing list
>>RFI at contesting.com
>>http://lists.contesting.com/mailman/listinfo/rfi
> 
> 
>