Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: QRM on 21 Mhz  (Read 491 times)
G3UCQ
Member

Posts: 43


WWW

Ignore
« on: October 31, 2008, 03:07:37 AM »

Hi.
Does anyone know where the Buzzy QRM on the first 20khz of 21mhz is coming from?  10:00 UTC now here and is S9.  It has been reported from other European stations as well on the DXcluster.
73 John
G3UCQ
Logged
K0OD
Member

Posts: 2591




Ignore
« Reply #1 on: October 31, 2008, 06:05:46 AM »

Should be easy to get a very good idea where it's coming from with all the big yagis on 15. The path would have to be entirely in daylight to propagate, too.

Tracking it down with help from the internet should  be an interesting project.  
       
Logged
VE1CZ
Member

Posts: 70




Ignore
« Reply #2 on: October 31, 2008, 06:12:10 AM »

I just started to notice the same thing here today, it was ok yesterday and this is the first time I have heard it.Sure messes up the low end of 15 meters cw!!
Logged
N3OX
Member

Posts: 8847


WWW

Ignore
« Reply #3 on: October 31, 2008, 06:27:58 AM »

I have it only S2 or so here on peaks but I hear it.  Lots of QSB.  My 15m antenna isn't fully up right now, and pointed north/south, but maybe later this weekend I can check (though I'm sure there's someone near me with a beam who could do a better job).

So a G3 posts about QRM on a "dead band" and a VE1 and an N3 hear it right off.  Yikes.  That sucker is LOUD whatever it is.

73
Dan



Logged

73,
Dan
http://www.n3ox.net

Monkey/silicon cyborg, beeping at rocks since 1995.
N3OX
Member

Posts: 8847


WWW

Ignore
« Reply #4 on: October 31, 2008, 06:28:26 AM »

By the way, it's probably over the horizon radar.
Logged

73,
Dan
http://www.n3ox.net

Monkey/silicon cyborg, beeping at rocks since 1995.
G3UCQ
Member

Posts: 43


WWW

Ignore
« Reply #5 on: October 31, 2008, 06:36:07 AM »

Thanks guys.  15m is certainly not dead here.  Someone in Europe posted on a DXcluster that it was coming from ZC4 (Sovereign Base Area on Cyprus i.e the British MOD base - possibly Akrotiri if that info is correct)  My mini beam seems to confirm the QRM coming from a SouthEasterly direction which could be Cyprus???  It is 13:35 UTC here and I cannot hear it now.
73 es good dx
John G3UCQ
Logged
N3OX
Member

Posts: 8847


WWW

Ignore
« Reply #6 on: October 31, 2008, 06:59:33 AM »

"Thanks guys. 15m is certainly not dead here."

Oh I know... it's just that I don't usually hear many stations unless a contest is going on.

In fact, if I go ahead and pull up ZC4 in my prop software, it shows that the band should be open everywhere between 1100 and 1800Z ;-)

'Course if all there is is a hundred kilowatt radar station that doesn't help me much, but I've worked ZC4 on 15 anyway ... heh.

73
Dan
Logged

73,
Dan
http://www.n3ox.net

Monkey/silicon cyborg, beeping at rocks since 1995.
G8UBJ
Member

Posts: 478


WWW

Ignore
« Reply #7 on: October 31, 2008, 08:42:39 AM »

I work ZC4 on 15M RTTY every contest..  I wonder if there's a ZC4 could confirm our suspicions?
Logged
KC8HQX
Member

Posts: 177




Ignore
« Reply #8 on: October 31, 2008, 04:08:28 PM »

The HAARP site up in Alaska shows a strong signal all over the spectrogram(harmonics?)around that time. I was wondering what it was..

http://maestro.haarp.alaska.edu/data/spectrum2/www/hf.html

Doug
Logged
G3UCQ
Member

Posts: 43


WWW

Ignore
« Reply #9 on: November 01, 2008, 03:24:54 AM »

Hi Doug
I don't think it was the Alaskan HAARP site as the signal I was getting was different to that.

It would be good if hams with yagis all over Europe and the Middle East could give the bearing of the noise so we could pin point it.  Is there a system in place where that could be done?  If not, the only way I see it is to place a message on a DXCluster and hope enough hams respond.

73s John
G3UCQ
Logged
KC8HQX
Member

Posts: 177




Ignore
« Reply #10 on: November 01, 2008, 09:02:22 PM »

I didn't think it originated from the HAARP site; I posted that link because the HAARP folks run the spectrum monitor 24/7.  It's a great 30,0000 ft. view of the bands.

Doug
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!