[Lowfer] power line interference

[Chris Trask]

>
> I built an ultrasonic receiver with a small hand held parabolic dish and
> once you are in the area they are absolutely amazing at getting problems
> pinpointed exactly .
>
> Having tagged along with the FCC on a 2 year long noise problem from the
> local utility company , I learned a LOT about noise finding . They were
here
> at least once a month , on the Kansas side of the line in Coffeyville .
>
> Plus I was a consulting engineer for that same power company for 5 years
and
> had to handle all of the noise complaints . I could write a book on what
> causes problems and locating and resolving them .
>

    <<SNIP>>

    Here, the biggest problem is with sodium vapour street lights, and not
just one at a time.  Many of the SWBC bands are overwhelmed with this,
leaving them unlistenable except for the strongest stations.  That prompted
me to come up with a pre-receiver noise blanker of my own:

    http://www.home.earthlink.net/~christrask/Paper020.html


Chris Trask
N7ZWY / WDX3HLB
Senior Member IEEE
http://www.home.earthlink.net/~christrask/