nanog mailing list archives

Re: US Warships jamming Lebanon Internet


From: George Herbert <george.herbert () gmail com>
Date: Mon, 7 Feb 2011 15:42:42 -0800

On Mon, Feb 7, 2011 at 2:23 PM, Ryan Wilkins <ryan () deadfrog net> wrote:

On Feb 7, 2011, at 4:06 PM, Michael Painter wrote:

Hi Denys
I doubt it's intentional jamming since I've had the same problem.
Aegis radar is very high power in full radiate mode and as such creates problems for Low Noise Amplifiers listening 
at 3.4-4.2 GHz.
Someone needs to talk to Microwave Filter Company.
http://www.microwavefilter.com/c-band_radar_elimination.htm

--Michael

+1 for Microwave Filter.  They've helped me out in a couples jams before.  They're very responsive and the products 
are good, too.

I think people in San Diego and near Norfolk, VA have the same problems.

The C-band frequencies are 2x those of the S-band (4-8 GHz for C, 2-4
GHz for S); if the SPY-1 / SPY-1D radar is frequency hopping it may
well step on someone's C-band links at twice the radar's basic
frequency.  Just need a filter to remove actual S-band frequencies
from C-band feeds.


-- 
-george william herbert
george.herbert () gmail com


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