[PVRCNC] Line noise locator

[Jim Jordan, K4QPL]

If you have any HT or other radio which covers "Aircraft band" that's AM 
from about 108-130 mhz. My Yaesu VX-7 has it and I guess one could add an 
outboard yagi or dipole instead of the rubber duck.


----- Original Message ----- 
From: "Bill Tippett" <btippett at alum.mit.edu>
To: <pvrcnc at mailman.qth.net>
Sent: Monday, February 18, 2008 11:17 AM
Subject: [PVRCNC] Line noise locator


>
>
> >Does anyone have the MFJ-856 line noise locator (or similar)? If so, do
> they work well for you?
>
>         Will I have 852 which has the identical RX but a dipole
> instead of Yagi antenna.  The unit uses AM detection in the VHF band,
> so it's only useful if you've narrowed down the noise location to
> a specific area.  I normally use my car radio tuned to 1710 kHz to
> locate noise by driving around.  I also have a Sony 2010 which is
> useful to locate a general area (the whip tip maximizes noise so I
> use that for DF-ing...also used a Palomar Loop but since sold it.
> The 852 has a built in dipole antenna with two retractable
> whips and can locate the exact pole once you are in the right
> area of the noise.
>
>         When I was up at VY2ZM's, we could have used one of
> these.  We found the general area but could not isolate which
> of 3 different poles was the source.  Jeff ordered two of
> them...one for himself and one to give to the power company.
> They previously had difficulty verifying they had fixed
> noise problems and this would be perfect for doing that.
>
>         Don't expect miracles from it but if you can locate
> the general location it will work fairly well.  Even better
> is a receiver like an old Kenwood R800.  It covered up to
> 800 MHz and had AM detection over the entire range.  I used
> W0YG's in Colorado with Yagis for both 2m and 440.  Once I
> isolated a pole on 2m, I switched to 440 and could point
> the ~10 element 440 to the exact spot on the pole.  Again
> you need to be close to the source for VHF to work and AM
> detection is absolutely necessary (FM won't work).
>
>                                         73,  Bill  W4ZV
>
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