[amsat-bb] Re: Can anyone help identify this signal

Andrew Glasbrenner glasbrenner at mindspring.com
Sun Aug 12 17:01:17 PDT 2012

Military radar. It's a common occurrence here on the gulf coast. 

73, Drew KO4MA

Sent from my iPhone

On Aug 12, 2012, at 6:29 PM, Thomas Doyle <tomdoyle1948 at gmail.com> wrote:

> I was getting ready for a pass today and heard a very disturbing
> signal in the 70 cm satellite band (435.84MHz). The signal was very
> strong. The signal was at least 500KHz wide (max range on spectrum
> scope). The the spectrum looked like FM but the recording was made
> with the receiver set to usb mode. I checked the signal on two
> different receivers (IC-7000 and IC-7600 with a 70cm converter)  to
> make sure it was not a internal birdie of some sort. During the pass
> it wiped out the sat when it was on. Fortunately it went away after
> about an hour. I am fairly sure it was terrestrial as the signal level
> did not change over the hour. Since it was on for only very short
> periods of time it was impossible to point the beam at it.
> Any help identifying the signal type would be appreciated.
> http://www.tomdoyle.org/RX-8-12-2012-435.84MHz%20-%20USB.WAV
> tnx & 73 W9KE Tom Doyle
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list