Topband: Warbling Noise around 3513 khz.???? Opinions sought.

[Jim Streible]

Val,

A little more news.
Not only is it on 3513.5 but, it is also on 1/2 that freq at 1756.75.
At 1900Z this afternoon I could hear on both frequencies. Same number of
signals in the pass band, about 6 or 7, and they seem to be modulated. I 
was using AM
with +/- 6.6 kHz pass band. Later at 2100Z it was only on 3513.5. I 
haven't tried higher but,
may tonight. I don't have any input filters for the Flex to listen below 
the BC band with any
accuracy.

Since we are both hearing it, on the coast and here just North of 
Atlanta, it is either
being transmitter or has something to do with the power grid. Maybe Tom, 
W8JI, can
get a good direction on it. I have a problem with my little K9AY, the 
plug has corroded
and I can't change direction right now. If it off the power grid it will 
be coming from everywhere.
Does anyone else hear this signal?

73,

Jim  K4DLI



On 8/31/2014 12:05 PM, Hugh Valentine wrote:
> Good Day, Like most I am trying to prepare for Top Band season.  I have a mystery noise which Warlbes and slightly shifts Freq. centering around 3513.5 Khz.I can disconnect most everything in house, including Modems, Computers, Fluorescents,TVs, Gadgets and am down to using a 12V battery on the K3, connected to any outside antenna, including RX ant., and can still hear this noise. Anyone experience this type noise around this frequency?  And what have you found?Possible Smart meter noise?  But it is pretty constant, there all the time, not on and off periodically.  About all I can conclude so far.I usually have a pin drop quiet environment here on the island where utilities are underground and want to find the source. Thanks for any comments. ValN4RJ
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