[RFI] 7.2kv Single Phase

[Charles Plunk]

Thanks for the reply Mike.

Here are some photos I took 2 or 3 days ago; 
https://www.facebook.com/media/set/?set=a.169293388701571&type=3

And a photo at the bottom of the page here; 
https://www.qsl.net/af4o/Powerline%20RFI%20QSL.net%20Webpage/Fall%202021%20Source%202.html 
<https://www.qsl.net/af4o/Powerline%20RFI%20QSL.net%20Webpage/Fall%202021%20Source%202.html>

Thanks,

Chuck

W4NBO



On 10/6/21 7:10 AM, Mike Martin wrote:
> Going by your notes, a single phase pole with nothing but a pole top 
> pin and a ground is probably one of two things.
> Most common and most likely would be the staple and they shouldn't be 
> hampered in they should be removed and replaced so the new staple is 
> in fresh wood and will be tight for a long time. The second source 
> will be one of the bolts holding the pole top pin. Commonly one is a 
> through bolt that goes all the way through the pole with a nut and 
> washer on the backside and often the second one is a lag which is no 
> more than a very large wood screw that always comes loose. At any rate 
> I would suggest they tighten both pole top pins and replace the 
> Staples maybe the first three or four from the top. Sometimes 
> hammering The stables in will work and sometimes only temporarily. 
> Other times not at all. It's unlikely to be a tie wire or the 
> insulator unless it's been struck by lightning which is a possibility 
> and frequently you can tell with binoculars that the top of the 
> insulator is now White where the coating has been burned off of it by 
> the lightning. If it's insulated conductor then that would be the most 
> likely source that isn't detectable with ultrasound, because the 
> arcing is through the rubber and on top of the insulator where it 
> can't be seen. If it's a bear conductor in the tide wire is insulated 
> then ask them to remove about 4 inches of the insulation from the tie 
> wire and twist that end of the tie wire tightly on to the line and 
> then that will solve that problem. I'd love to see a picture of that 
> pole standing under the line looking straight up so you can see both 
> sides of the pole.
> At any rate these items will definitely cover that pole and you're 
> fortunate, if that is the source pole, to have such an easy pull to 
> resolve an issue on.
> Best wishes and I look forward to hearing the result
>
> Be safe,
> Mike Martin
> RFI Services
> 51 W Bay Front Rd
> Lothian, MD 20711
> 240-508-3760
> On Oct 6, 2021, at 1:55 AM, Charles Plunk <af4o at twc.com 
> <mailto:af4o at twc.com>> wrote:
>
>     Fellow RFI hunters,
>
>     My latest source is s8-s9 nearly across the hf bands on my vintage
>     TS830s and Doublet. I use the 830s mainly as a station reference when
>     hunting RFI. I have triangulated it to a single phase 7.2kv pole */3
>     houses away./* Unable to hear it with Ultrasonic dish, although about
>     1/3 of the side of the pole is inaccessible due to a very jungle like
>     backyard (bad renters moved out, owner died, house recently sold, long
>     story).
>
>     It just has a insulator at top for single phase, pole pig fed by a short
>     wire from the single phase, then lower 3 wires I am assuming lower
>     voltages, neutral, ground, and 3 house drops.
>
>     Ive been looking at some pictures I took.
>
>     The stapled ground wire on the wood pole goes up to with maybe 2 inches
>     of the 2 bolt metal bracket holding the top insulator on but does not
>     appear to be connected. I can zoom in on the picture and see this.
>
>     So, does this strong an arc just about have to be on that insulator area
>     of the 7.2kv or am I wrong and it can be in the ground system, 220v run,
>     etc?
>
>     More detail here;
>     https://www.qsl.net/af4o/Powerline%20RFI%20QSL.net%20Webpage/Fall%202021%20Source%202.html  <https://www.qsl.net/af4o/Powerline%20RFI%20QSL.net%20Webpage/Fall%202021%20Source%202.html>
>
>     I emailed the Utility this past Thursday about this one and another
>     close by that I am hearing with the Ultrasonic.
>
>     73
>
>     Chuck
>
>     W4NBO
>
>
>     ------------------------------------------------------------------------
>
>     RFI mailing list
>     RFI at contesting.com
>     http://lists.contesting.com/mailman/listinfo/rfi  <http://lists.contesting.com/mailman/listinfo/rfi>
>