[RFI] Recent 40 Meter AC noises?
dave at nk7z.net
Thu Aug 30 12:51:57 EDT 2012
Is your beam a 40 meter beam? Do any of the folks hearing it have 40
meter beams, if so, what headings are you each showing.
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For JT65 Discussions:
On Thu, 2012-08-30 at 12:35 -0400, Paul K. wrote:
> The past few weeks, not only me, but several folks I talk to around
> 7.260 in the mornings have complained about a "AC hum." I have watched
> this hum on the panadapter. It appears to be spread evenly across the
> band, no peaks or dips. On the panadapter the spikes appear at about
> 120Hz interval, about 3 to 6 dB above the noise. I have rotated the
> beam and found the peak level to be approximately 135 degrees. It has
> been confirmed by a station in western Missouri, central Indiana
> and Annapolis Maryland. This noise has been present nearly every
> morning for the past 2 weeks, but I did not hear or see it today.
> When this is on it does not sweep or pulse. It is just simply present.
> I believe due to the wide spread reception of the exact same noise by
> stations in vastly different areas the possibility of something locally
> to any of us is highly remote.
> So the curiosity is up. What do you folks think we are hearing, and are
> any of you hear other reports about it.
> Paul K.
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