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

donate to eham
   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: VHF Noise "burst"  (Read 2253 times)
KD5JFT
Member

Posts: 82




Ignore
« on: June 14, 2004, 12:27:11 AM »

Earlier today, I ran into a new problem. 6M and 2M noise levels were way down, and I could hear some good activity. It was very clear, but did not register on the S meter. I had a noise problem rear it's ugly head. Every nine seconds and lasting for between four and five seconds, I was getting noise "bursts". These would register between 5 to 7 on the S meter. Needless to say this totally blocked any attempt to make a contact. This noise was evident over the entire 6M and 2M ssb portions of the bands. I was using horizontal omni antennas (Killer 6 and Big Wheel from www.dwtulsa.com) mounted at approximately 30ft, and a Yaesu FT-847 and FT-726. The noise was there at 17:00 and stopped between 19:00 and 19:30 Central Time. The noise was not apparent on any HF bands (attic mounted G5RVjr). I switched to a vertical antenna and the noise was still there, just not as bad (3-4 on the S meter). With the vertical, I could not even hear the conversations between the "noise bursts" although I could with the horizontal antennas.
 
Has anyone seen this type of problem?
Any ideas what could cause this?
Any suggestions on tracking it down if (when) it re-occurs?
 
I tried disconnecting all the electrical equipment in the shack, and it made no difference.  This includes the Linksys WiFi AP/Router and cable modem. I can only assume that the "noise" is external to my shack. I may have a three element 2M beam up soon, but that is my only directional antenna.
 
Any ideas would be appreciated.
 
Craig
KD5JFT
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!