10 over 9 in SW New Hampshire @ 1140Z
Doug - K1ZO
----- Original Message -----
From: "Tony K1AMF" <k1amf@live.com>
To: "'Doug Grant'" <dougk1dg@gmail.com>; "'Rich C'"
<rich_k7zv@gphilltop.com>
Cc: "'Ray Benny'" <rayn6vr@cableone.net>; <topband@contesting.com>
Sent: Tuesday, December 09, 2014 6:41 AM
Subject: Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz
S8-9 near NYC right now 11:40Z...was about 10 over 9 here a half hour ago.
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Doug
Grant
Sent: Tuesday, December 9, 2014 6:38 AM
To: Rich C
Cc: Ray Benny; topband@contesting.com
Subject: Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz
1136z and it is 40 over 9 here in southern Maine.
It is not far away from here.
On Tue, Dec 9, 2014 at 4:41 AM, Rich C <rich_k7zv@gphilltop.com> wrote:
I just did a check with the HI Z 4-8 and it is DUE EAST of here at
S8-9 here in Grants Pass Oregon. It drops off each side of due east
when I switch it.
Rich K7ZV
On Mon, December 8, 2014 10:00 pm, Doug Grant wrote:
0350z it is back and loud again (40dB over s9) and has QSB.
This site shows how Codar systems work
http://www.ims.uaf.edu/hfradar/how_it_works/
the sound clip on that page has audio that is higher-pitched than the
one on 1915 but similar in structure.
73,
Doug K1DG
On Tue, Dec 9, 2014 at 3:44 AM, Ray Benny <rayn6vr@cableone.net> wrote:
Guys,
I am hearing something between 1910 and 1925. Its a rapid, raspy,
pulse tone, but its coming from the SE in Central AZ (SA
direction). It is just above my noise level, currently S4, so not
strong. Do not hear it on my TX vertical. Don't know if this could
be the noise reported or some local garbage in my area.
Using a HI-Z RX 4 SQ.
Ray,
N6VR
On Mon, Dec 8, 2014 at 7:13 PM, Doug Grant <dougk1dg@gmail.com> wrote:
From: k1fz@myfairpoint.net
Monday? 9;45 AM
Unable to hear the 1900-1925 Khz. interfering signal this morning.
Propagation change, or is the signal gone ?
Anyone still hear it?
I checked a few times during the day on Monday and did not hear it.
At 0200z I checked again and it was there and very loud...40dB over
s9. Definitely louder on my NE antenna, but only by 10 dB or so.
Maybe it is close enough that it is arriving at a high angle. But
30 seconds after I tuned in, it stopped!
The signal characteristics are almost identical to CODAR
sea-surface radar. There are three of those installations in Maine
and VE1 that are easy to hear on 4.8 MHz. Maybe they are trying
smoethign new there. Or maybe is it in TF or even shipboard
somewhere off Newfoundland...the CODAR system uses fairly small
antennas and low power, so it is possible.
I placed a phone call over the weekend to the Operations Manager
for one of the projects using those sites and left a message asking
if they had something running at 1.9 MHz, but no answer yet.
73,
Doug K1DG
Long Island, ME FN43
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|