[Lowfer] Puzzle at 74.563 kHz

[David L. Wilson]

One clue came later when I discovered the antenna was not hooked up to the
receiver I was using.  That and the steadiness of the signal have me
convinced it is power line company signaling over the lines.   I saw similar
at 30 Hz years ago (I have not recently looked)

--
David L. Wilson
dwilson314 at verizon.net


> -----Original Message-----
> From: Graham [mailto:planophore at aei.ca]
> Sent: Monday, September 30, 2013 8:12 PM
> To: dwilson314 at verizon.net; Discussion of the Lowfer (US, European, &
> UK) and MedFer bands
> Subject: Re: [Lowfer] Puzzle at 74.563 kHz
> 
> David,
> 
> I have seen this too and as displayed on Argo looks identical and has the
> same behaviour.
> 
> I can't recall the frequency but I may have noted it at about double the
> frequency you note but I my recollection may be faulty. I haven't looked
for
> it in some time figuring it was just some EMI/RFI from yet another
consumer
> electronic device of some sort like a smart water meter, or smart hydro
> meter, or (fill in the blank).
> 
> With a bit of detective work I might be able to track down the source but
it
> hasn't bubbled to the top of my "to do" list yet as it hasn't really been
a
> bother.
> 
> Do post your findings if you do figure out what the source is.
> 
> cheers, Graham ve3gtc
> 
> 
> 
> 
> On 13-09-29 12:39 AM, David L. Wilson wrote:
> > I have noticed I have a carrier at 74.563 receivable all the time.
> > There are ocational bursts of several minutes of what appears to be
> > modulation on it.  Anyone else see this?  The attached is a past of
> > part of an Argo waterfall pasted into WSPR-X waterfall.  Ther receiver
> > was tuned for 72.94 kHz usb so 1623 Hz+72.940 kHz =75.563 kHz.
> >
> > --
> > David L. Wilson
> > dwilson314 at verizon.net
> >
> >