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Re: [IRCA] [NRC-AM] 1500 KHz "Mystery Station"

Les,

I'm not setup with a rotatable loop so I'm unable to get a bearing on this
other than confirming that I only hear it on my south antenna.  I know, not
very helpful..

73,
Tim


On Sun, Feb 7, 2016 at 4:52 PM, Les Rayburn <les@xxxxxxxxxxxxxxxx> wrote:

> Tim,
>
> Thank you for posting this. Extremely helpful for both DXâers and members
> of the broadcast engineering community who are attempting to help narrow
> down the station with the problem.
>
> Do you have a bearing on the station from your QTH?
>
>
> 73,
>
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL
> EM63nf
>
> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
>
> Elad FDM-S2 SDR, AirSpy SDR, Quantum Phaser, Wellbrook ALA1530 Loop,
> Wellbrook Flag, Clifton Labs Active Whip.
>
>
> > On Feb 7, 2016, at 1:41 PM, Tim Tromp <kilokat7@xxxxxxxxx> wrote:
> >
> > Just so everyone's on the same page, here's a recording of the
> interference
> > that's in question, which I assume is what everyone else is referring to.
> > I have issue with calling this a "warbler" or "warbling" since I
> > immediately think of the Cuban transmitters with the wobbling carrier
> that
> > sounds like someone flexing a piece of sheet metal.  This sounds nothing
> > like that.  The noise is present in both the upper and lower sideband and
> > it appears at 500 hz intervals centered about the carrier.
> >
> > https://www.youtube.com/watch?v=_M4opnMHq88
> >
> > 73,
> > Tim Tromp
> > West Michigan
> >
> >
> > On Sun, Feb 7, 2016 at 11:56 AM, Les Rayburn <les@xxxxxxxxxxxxxxxx>
> wrote:
> >
> >> Excellent information Glenn. We went to Tennessee yesterday on business,
> >> and I brought along a portable to get some DF bearings. The warbler
> noise
> >> was very loud on the car radio right at sunset, but I didnât have time
> to
> >> try for bearings then. After dinner with clients, I checked again and
> the
> >> noise was so low in the mix of stations that getting a solid bearing
> would
> >> have been fruitless.
> >>
> >> I can confirm that WQCR in Alabaster is powering down completely at
> >> nightâoften an hour or more than would be required by rule. I live in
> >> Alabaster (Maylene) and theyâre not even staying on at the 3 watt level
> now
> >> at night.
> >>
> >> The station was an infrequent cheater in the past, but I havenât heard
> >> them do that for the past couple of years.
> >>
> >> We can eliminate them as a suspect for the noise.
> >>
> >>
> >> 73,
> >>
> >> Les Rayburn, N1LF
> >> 121 Mayfair Park
> >> Maylene, AL
> >> EM63nf
> >>
> >> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
> >>
> >> Elad FDM-S2 SDR, AirSpy SDR, Quantum Phaser, Wellbrook ALA1530 Loop,
> >> Wellbrook Flag, Clifton Labs Active Whip.
> >>
> >>
> >>> On Feb 7, 2016, at 10:05 AM, Glenn Hauser <wghauser@xxxxxxxxx> wrote:
> >>>
> >>> UNIDENTIFIED. 1500, Feb 7 at 0119 UT, not much signal from KSTP, so I
> am
> >> hearing the blues music station and the warble-tone. KSTP is so weak
> that I
> >> can get pretty good bearings on these two, nulling them without KSTP in
> the
> >> way: warble is about 95 degrees, and blues about 135 degrees (assuming
> they
> >> are both eastward rather than westward). Tends to confirm blues source
> as
> >> the station doing that all-night, KCLF New Roads LA. At least on
> >> weeknights, with weekends unaccounted for:
> >>> http://kclf1500am.com/shows.html
> >>>
> >>> Closest to the 95 degree angle from Enid with the warble are three
> >> Alabamans and one further Georgian: WQCR Alabaster, 2300/3 watts, WVSM
> >> Rainsville, 1000/-, WKAX Russellville, 1000/-; and WDPC Dallas GA,
> 5000/CH
> >> 3200 (Glenn Hauser, OK, DX LISTENING DIGEST)
> >>>
> >>>
> >>> On 2/5/2016 11:55 AM, Rob Keeney wrote:
> >>>
> >>>
> >>> If everyone posts their location and loop bearing of the
> >>> noisy xmtr, I'll
> >>>
> >>> try and plot the data.
> >>>
> >>>
> >>>
> >>> Rob Keeney
> >>>
> >>> Goose Creek SC
> >>>
> >>> EM92xx
> >>>
> >>>
> >>>
> >>> On Fri, Feb 5, 2016 at 11:09 AM, Les Rayburn <les@xxxxxxxxxxxxxxxx>
> >>> wrote:
> >>>
> >>>
> >>>
> >>>
> >>> Most of us are using bi-directional (simple) loops, but
> >>> weâre spread out
> >>>
> >>> geographically. If we plot these on a map, we should be able
> >>> to determine
> >>>
> >>> the location pretty quickly. Assuming that the culprit is a
> >>> licensed
> >>>
> >>> broadcaster with transmitter problem, there are a limited
> >>> number of
> >>>
> >>> suspects.
> >>>
> >>>
> >>>
> >>> Anyone have time to try this?
> >>>
> >>>
> >>>
> >>> 73,
> >>>
> >>>
> >>>
> >>> Les N1LF
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> Les Rayburn, director
> >>>
> >>> High Noon Media Services
> >>>
> >>> 130 1st Avenue West
> >>>
> >>> Alabaster, AL 35007-8536
> >>>
> >>>
> >>>
> >>> On Feb 4, 2016, at 8:00 PM, Rob Keeney <rkeeneybbq@xxxxxxxxx>
> >>> wrote:
> >>>
> >>>
> >>>
> >>> I had WFED in pretty well at first look around 1730 ET with
> >>> no sign of
> >>>
> >>>
> >>> the
> >>>
> >>>
> >>> warbler.  Next check was 1845 ET and the warbler was
> >>> present, but
> >>>
> >>> definitely looping west of WFED.
> >>>
> >>>
> >>>
> >>> Rob Keeney
> >>>
> >>> Goose Creek SC
> >>>
> >>> EM92xx
> >>>
> >>>
> >>> _______________________________________________
> >>> Now accepting Pre-orders for the
> >>> 36th Edition of the AM Radio Log
> >>> http://www.nrcdxas.org
> >>
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