Anyone else receiving this? In AM, sounds like a low breathy note on a
flute. In sideband, sounds like a sweeping chirp - once per second. I'm
suspicious, because I can hear it about S3 during the day, so I'm
thinking local. (Perhaps my gas or electric company's remote read
digital meters?)

QTH is Raleigh, NC
Drake R8
ANC-4
TTFD
Horizontal Loop

-j

JoanD'arcRoast wrote:

Anyone else receiving this? In AM, sounds like a low breathy note on a
flute. In sideband, sounds like a sweeping chirp - once per second. I'm
suspicious, because I can hear it about S3 during the day, so I'm
thinking local. (Perhaps my gas or electric company's remote read
digital meters?)

Most likely CODAR.

In article kVi7j.1525$CJ.405@trndny02, Janitor Boy Jr
wrote:

On Mon, 10 Dec 2007 12:43:46 -0500, JoanD'arcRoast tossed this out for all
to see:

Anyone else receiving this? In AM, sounds like a low breathy note on a
flute. In sideband, sounds like a sweeping chirp - once per second. I'm
suspicious, because I can hear it about S3 during the day, so I'm thinking
local. (Perhaps my gas or electric company's remote read digital meters?)


got the same thing here.
S9+
NE Wisconsin

Thanks. That rules out local.

(Are you in Green Bay? Go Packers! [I was raised in SE Wisconsin:
Whitewater area... Back when Lombardi was king.])

-j

In article UJP7j.3236$1p.2018@trndny01, Janitor Boy Jr
wrote:

On Wed, 12 Dec 2007 01:51:21 -0500, JoanD'arcRoast tossed this out for all
to see:

In article kVi7j.1525$CJ.405@trndny02, Janitor Boy Jr
wrote:

On Mon, 10 Dec 2007 12:43:46 -0500, JoanD'arcRoast tossed this out for
all to see:

Anyone else receiving this? In AM, sounds like a low breathy note on a
flute. In sideband, sounds like a sweeping chirp - once per second.
I'm suspicious, because I can hear it about S3 during the day, so I'm
thinking local. (Perhaps my gas or electric company's remote read
digital meters?)


got the same thing here.
S9+
NE Wisconsin

Thanks. That rules out local.

(Are you in Green Bay? Go Packers! [I was raised in SE Wisconsin:
Whitewater area... Back when Lombardi was king.])


a bit NW of Green Bay.
booooooo Packers!

Your eloquent and concise argument has completely changed my mind. I
now truly believe that the Packers suck. Especially Favre.
WooHoo---Suckage!

Back to topic: There's another noisy note from 4.877-4.902. Over S5 at
19:48Z

Weak one from 4.916-4.936. S1 @ 19:58Z

Big one from 4.963-4.995. S5+ @ 20:00Z

WWV is S1 on 5mHz this time of day.

4.734-4.766. S3 @ 20:04Z

Two of them overlap 4.530 S6 @20:06Z

The first one mentioned at 4.810 is an overlap of two, as well. S6 @
20:06Z

I don't see any CODAR installations on Lake Michigan.

-j

JoanD'arcRoast wrote:
snip

Back to topic: There's another noisy note from 4.877-4.902. Over S5 at
19:48Z


Perhaps this deserves some attention from folks in this N.G.; there
are a number of online receivers to use in chasing this signal.
I went to http://adamsj.dynalias.org/RCSweb/ in North Carolina
and at about 2045 UTC the signal on 4800 kHz was 20/S9.
I recorded 30 seconds of the audio using these settings:

mode: USB, filter: 2100 Hz, AGC: slow

Listen he http://www.cybertheque.org/ham/audio/4800chirp1.mp3

I am not hearing it here in No. MN.

For other readers, please take the time to use some of the online
receivers and check for it in other locations.

Perhaps also use other modes and filter settings and perhaps
submit it to spectral analysis.

Report here ;-)

Michael

msg wrote:

JoanD'arcRoast wrote:
snip

Back to topic: There's another noisy note from 4.877-4.902. Over S5 at
19:48Z


Perhaps this deserves some attention from folks in this N.G.; there
are a number of online receivers to use in chasing this signal.
I went to http://adamsj.dynalias.org/RCSweb/ in North Carolina
and at about 2045 UTC the signal on 4800 kHz was 20/S9.

snip

It's 40/S9 right now at the same QTH at 2110 UTC

Michael

msg wrote:
JoanD'arcRoast wrote:
snip

Back to topic: There's another noisy note from 4.877-4.902. Over S5 at
19:48Z


Perhaps this deserves some attention from folks in this N.G.; there
are a number of online receivers to use in chasing this signal.
I went to http://adamsj.dynalias.org/RCSweb/ in North Carolina
and at about 2045 UTC the signal on 4800 kHz was 20/S9.
I recorded 30 seconds of the audio using these settings:

mode: USB, filter: 2100 Hz, AGC: slow


snip

I changed the files as follows:

4800kHz, SW, 8kHz filter: http://www.cybertheque.org/ham/audio...w_8khzFilt.mp3

4800kHz, AM, 8kHz filter: http://www.cybertheque.org/ham/audio...m_8khzFilt.mp3

Another user of the North Carolina receiver said the freq. maps to a USN Tactical
(beacon?) usage in a UTE list.

Please listen to these clips and tell me if this is what you are hearing on the freqs.
and in the locations previously posted.

Regards,

Michael

Janitor Boy Jr wrote:
snip

strange. at 4800, I hear the single "weep" then what sounds like an echo.
4806 through 4810 I hear both "weep, weep" solid. I'll record a few
samples.


A little web research of archives finds mentions of "sweepers" on 4800 +/-
25 kHz of high signal strength in the past five years being an annoyance
across the U.S. and even in New Zealand; consensus amongst respondents
is that they are hf radars for ocean current studies, probably higher
power implementations as opposed to the low power Codar brand systems
documented by the manufacturer at its website. An argument against
OTH radar was that the signals didn't change diurnally or based on
propagation conditions.

Folks with directional antennas could help triangulate these signals; a
little RDF in locations with very strong signals may also be useful.

Michael

Janitor Boy Jr wrote:
snip


here's a few short clips of what I hear tonight.

http://callgeorge.info/sounds/


Seems to be the same signals as heard from the North Carolina
receiver; I really doubt that 80W codar stations could be
responsible (www.codaros.com) and wonder what sort of
project could justify the power used in these signals.

Regards,

Michael

Janitor Boy Jr wrote:

On Wed, 12 Dec 2007 19:04:39 -0600, msg tossed this out for all to see:


Janitor Boy Jr wrote:
snip

strange. at 4800, I hear the single "weep" then what sounds like an
echo. 4806 through 4810 I hear both "weep, weep" solid. I'll record a
few samples.


snip

Finally got it here in No. MN at 0310 UTC on 4800 kHz +/- several 100 kHz
at least. 80M amateur band is also open and much quieter than in recent
days.

Michael