[RFI] Antenna idea?

[EDWARDS, EDDIE J]

Dave, 

Nice set of videos on youtube!  

If you get a chance, you should also do a video demonstrating Standing Waves (on lower freqs) along a noisy line.  

73, de ed -K0iL

-----Original Message-----
From: rfi-bounces at contesting.com [mailto:rfi-bounces at contesting.com] On Behalf Of N0RQ-lists
Sent: Monday, January 23, 2012 5:03 PM
To: 'Rfi List'
Subject: Re: [RFI] Antenna idea?

My answer, Kurt, would be that there is no one answer to the polarity
question.

Depending on the noise source, it could be anything.
A brief 19-second video shows an example of why 'changeable' polarity is
important when tracking down noise sources:
http://www.youtube.com/watch?v=nMKYDQTSXkY

Agreed on using a vertical (2m or 70cm mode AM) on a car to get close to the
poles, and then a handheld Yagi (again 2m or 70cm, with HT in AM mode) to
make sure you narrow down the exact pole(s).

Dave N0RQ  www.powerlinenoise.com


-----Original Message-----

Which would be better for general purpose long-range (relatively) sniffing?

Yagi?  Horizontal or vertical?

Helical?

Cross polarized Yagis?

I'm getting an idea for a sniffer on a vehicle, pointing upwards, camera in 
line with the antenna...

Kurt 

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