If it is a 10 second rev rate then it is a radar aircraft (the one with the HUGE pancake dome on the top) operating way off shore. The aircraft is the E2C or variant. If it is an 8 second rev period, then it is a ship's SPS-40 radar. Neither one is supposed to operate on the 430 MHz band within LOS of the Contineental USA. But for the aircraft that is almost 200 miles away..

During war, they can operate anywhere they want. We are 2ndary...

Bob, WB4APR

-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Nick Pugh K5QXJ Sent: Tuesday, March 01, 2011 5:29 AM To: amsat-bb@amsat.org Subject: [amsat-bb] Radar interference

Drew et All

I get the same interference from time to time here at EM30 Lafayette, La. I am told this is from ships moored in the Port of Baton Rouge some 50 miles away. I am told that this is a very old radar. I hear the signal strength go up and down on an interval of about 10 seconds and I assume that the antenna is rotating at about 6 RPM.

nick

http://www.youtube.com/watch?v=lPSvVEjrTzY

This is just a short video of the severe RADAR QRM I had today while trying to work FO-29. This is about as bad as I've ever seen it here in Central Florida. Please ignore my son coughing in the background (he's getting better fast), along with one of my male cockatiels crooning to the female one. :-)

73, Drew KO4MA

Thanks

nick

Office 337 593 8700

Cell 337 258 2527

Helping UL become a world Class Engineering and Educational School

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