[Boatanchors] Strange noise on 75 meters

[Philip (KO6BB)]

Do any of your neighbors have a Plasma TV (I.E. QRM generator) or 
perhaps one of the new electronic water softeners.  Either of these have 
given people RFI headaches.

73 de Phil,  KO6BB
http://www.qsl.net/ko6bb/   (Web Page)
http://ko6bb1.multiply.com/ (My OTR Blog)
http://cbsmysterytheater.multiply.com/ (My CBS
Radio Mystery Theater Blog)

RADIOS:
Yaesu FT-2000 Xceiver for "hamming" and LF Beacons.
National NC-183 16 Tube Receiver (circa 1949)
Zenith "American" Royal-7000 Transoceanic. (circa 1970)
Realistic DX-380 Digital Portable.

Central California


On 2/27/2011 8:09 PM, John King wrote:
> I have a raspy noise with rapid pulses on 3.660 mhz and at about 3.890 mhz.I
> have turned all electronic appliances in the house off including computers, TVs
> lights etc including the door bell by throwing all circuit breakers in the house
> ONE at a time. Can't find a source in the house or immediate area.
>
> Drove down highway and using the AM radio in the van, found an exceptionally
> high noise in the vicinity of two Power Company Transformers approximately 1.5
> miles from our home. I have a good relationship with the Power Cooperative and
> they have been very responsive in the past. I am just not sure the noise I am
> experiencing in my shack is eminating from the transformers in question. I do
> not have this level of noise on 160, 40, 30, 20, I8, 12, or 10. There is noise,
> of course, but not the level or raspy nature of the 75 meter noise. Not sure if
> the transformers 1.5 away miles might be the problem .
>
> During my 54 year ham career, I have searched and sniffed line noise and most of
> it has been such that it appeared across an entire band and often on more than
> one band without peaking at frequencies such as this case. Your thoughts,
> suggestions and musings based upon your knowledge and experience  will be
> appreciated. Thanks and 73, John, K5PGW
>
>
>
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