[RFI] Chasing RFI on 6M

David Cole dave at nk7z.net
Mon Dec 21 18:09:01 EST 2015


Hi,
I would recommend a loop, and use the null, not the peak...  Much
simpler to get your headings that way.  See:
http://nk7z.net/i-have-rfi-now-what-locating-it/
in that page, I covered how I did my beam headings etc., using a loop.
Hope it helps.
-- 
Thanks and 73's,
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On Mon, 2015-12-21 at 15:18 -0500, Jim Miller wrote:
> I have a 10db increase in noise on 6 meters to the east as compared to my
> west. This obviously isn't good when trying to work EU terrestrially or via
> EME at moonrise. I have already completed a full house power down test with
> no change noted.
> 
> I have the bits needed for a portable bandscope and a Tecsun PL-660 to
> employ in a 6M RFI hunt but I'd like some suggestions for a directional 6m
> antenna. My initial attempt at locating the source will be from my car as
> it is easier to carry all the stuff for the band scope in particular vs
> walking. I figure once I get closer the PL660 will be my walkabout device.
> It may also be useful by itself with a directional antenna.
> 
> I'm not sure on 6m a yagi would be useful due to the size so I wonder what
> others use? Perhaps a loop? Although bidirectional I could still
> triangulate on the source.
> 
> I know the suggested bands for finding power line noise are higher up and
> the Tecsun will help but for now I'd like to start where I know I have the
> problem, i.e. 6m. I don't have 2m capability here in the shack or on my
> rotator.
> 
> Thanks!
> 
> jim ab3cv
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