Re: US Warships jamming Lebanon Internet
Hi I'm sysadmin of Lebanese ISP. Almost at same time i got heavy interference on few of my C-Band carriers, and it looks like electronic warfare jamming, because i can see phase modulated, very weak signal, but it is completely breaking almost any communications on my carriers. Strange thing, that our uplink station confirm that interference is not local on my side, but on satellite carrier. If this will be confirmed, that means it is not just miscommunication between authorities about frequency usage, it will be intentional damage for Lebanese communications. Sure it can be coincidence in time or something else, but last 6 years i experience similar terrible interference only during 2006 Lebanon vs Israel war.
Lebanon's Telecom minister is claiming that US Navy radar is blocking the country's Internet..
http://www.naharnet.com/domino/tn/NewsDesk.nsf/0/93A95CA1A4E42178C225782E007...
"The problem, however, is due to a coordination error related to waves," Nahhas told OTV, adding that an investigation was underway to find out whether this act is "intentional or not."
also at http://www.naharnet.com/domino/tn/NewsDesk.nsf/Lebanon/EFCEF203B3C315A5C2257...
i can not ping the in-country secondries for the LB cctld. been the same for a few days. i visited last (northern) fall. what a beautiful country with such a tragic layer nine. randy
Denys Fedoryshchenko wrote:
Hi
I'm sysadmin of Lebanese ISP. Almost at same time i got heavy interference on few of my C-Band carriers, and it looks like electronic warfare jamming, because i can see phase modulated, very weak signal, but it is completely breaking almost any communications on my carriers.
Strange thing, that our uplink station confirm that interference is not local on my side, but on satellite carrier. If this will be confirmed, that means it is not just miscommunication between authorities about frequency usage, it will be intentional damage for Lebanese communications.
Sure it can be coincidence in time or something else, but last 6 years i experience similar terrible interference only during 2006 Lebanon vs Israel war.
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
Lebanon's Telecom minister is claiming that US Navy radar is blocking the country's Internet..
http://www.naharnet.com/domino/tn/NewsDesk.nsf/0/93A95CA1A4E42178C225782E007...
"The problem, however, is due to a coordination error related to waves," Nahhas told OTV, adding that an investigation was underway to find out whether this act is "intentional or not."
also at http://www.naharnet.com/domino/tn/NewsDesk.nsf/Lebanon/EFCEF203B3C315A5C2257...
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. Ryan Wilkins
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
I'm in San Diego and at my last company we had to replace all 2.4Ghz wireless with 5Ghz when we started getting hammered across that range by a signal about 90db higher than our APs by something. We were never able to identify what it was, but the signal looked odd and an ex-navy coworker said it looked like encrypted navy traffic. It always came in burst and would disconnect every user when it happened. Too bad they weren't doing it the day we did our site survey. -----Original Message----- From: George Herbert [mailto:george.herbert@gmail.com] Sent: Monday, February 07, 2011 3:43 PM To: Ryan Wilkins Cc: nanog@nanog.org Subject: Re: US Warships jamming Lebanon Internet 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
participants (6)
-
Denys Fedoryshchenko -
George Herbert -
Michael Painter -
Randy Bush -
Ryan Wilkins -
Thomas Magill