Hi Aaron,
I believe that if you actually pin this to the power company, they HAVE
to fix it... I am sure others will come in with more and better data
than I have...
--
73's and Thanks,
Dave
http://www.nk7z.net for equipment reviews, propagation, and more...
On Sat, 2012-12-08 at 16:59 -0500, Aaron Kreider wrote:
> I've got constant hum/buzz that is strongest in the 150 khz - 250 khz
> area and is coming from the power lines. It is around S7 on my Drake R8
> (with a low noise Wellbrook 1530+). On my noise antenna (a 6 foot
> horizontal wire) it was S9+10db (when using a triplite powerbar that
> isolated me from the AC noise) or S8 (when using a regular power bar
> that didn't isolate the radio from the AC and thus cancelled out the noise).
>
> I went around my neighborhood testing 50+ power poles using a Tecsun
> PL-380 and holding it up to the ground line on the power pole. This is a
> portable shortwave radio with a digital dbu meter. The noise floor on
> the dbu meter is 15. About 20% of the poles showed no noise - possibly
> due to faulty grounds which meant I was too far from the noise to hear
> it. The rest of the poles ranged from around 30 dbu to 50 dbu. I was
> hoping to find a single pole or two that I could blame, so I could work
> with the utility to fix it. But I didn't detect any major patterns.
>
> I'm wondering if my noise could be coming from multiple power poles?
>
> Unfortunately the PECO power lines run through my property and thus it
> is very hard to get away from them, and they are impossible to null with
> full effectiveness (as they are on multiple sides). Even if I go up
> 10-20 feet over my roof line, I'll probably still hear the noise. The
> other downside of going up is that Wellbrook loop antenna's ability to
> receive low angle signals degrades when you go high.
>
>
> Any advice?
>
> Aaron
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|