[RFI] RFI / Band Monitor

Martin Ewing martin at aa6e.net
Fri Nov 5 15:44:02 EST 2004


Folks,

I have been working on a semi-realtime band monitor
system, and there are some early results at
www.aa6e.net/aa6e/rfi/monitor.html.  I am recording
what happens on 40 & 20 M in 2 kHz channels in my
particular environment.

Why would we want to do this?

-Learn a little about propagation conditions vs solar
activity, etc.
-Pick up (and record) RFI problems
-Get a baseline, pre-BPL deployment
-Too much hardware, software, and time available ;-)

Ed Hare actually suggests it's a bad idea to make
baseline recordings if you want to proceed against the
power companies with a BPL complaint.  The logic is 
perverse, but he may be right.  See Ed's famous URL:
http://www.arrl.org/~ehare/bpl/measurements.html .

But as a frustrated radio astronomer and programmer, I
couldn't resist.  Already, I see some interesting
"UFOs", but they're probably somewhere in my house.

The process needs to be automated more, and I will
have to decide if it's worth trying to make a
long-term record (months/years).  

How could this stuff be made more useful?

73, Martin, AA6E



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