Welcome  to  PowerLineNoise.com

Of all the types of noise and harmful interference that hams have to deal with, none is so ubiquitous, annoying, and devastating as power line noise (PLN).  By that term, we mean radio frequency interference (RFI) that comes from sparking utility pole hardware.  It is broad-banded, often very strong, and sometimes difficult to get fixed.  The harmful interference generated can completely ruin your ham radio experience, unless all you do is talk on local FM repeaters.  Not even BPL (PLC) is as bad as PLN in many circumstances.

In a desperate effort to get the power line noise fixed where I live (north Texas), I have created this little web site.  (So far, my efforts at getting the noise fixed have been largely unsuccessful;  they began in 2003, and continue today, but I have not given up.)  My purpose here is to publish audio/video files of what I currently have to live with, as well as to provide notes and links to other sites.  Many hams have this problem, so I hope that some of the comments and references will be helpful to others.

However, for right now, I want to publish just a few .wmv files -- audio/video that shows my situation.  Note:  you will probably want to use these only if you have broadband speed -- or if dial-up, pick only the smallest file and be very patient!  Some of these files are very large, but some are much smaller.  Note the size & length listed after each file.  (The most recent ones are listed at the top.) 

NEWS FLASH -- some fixes made! *** December 3, 2007, in the shack and in the field, VHF/UHF ***  (55 mb, 4 min)  Just last week, the utility came out and fixed several of the major noise sources, after a 2 year absence.  This is great! -- though I will be quick to mention there is more work to do!  This video was made a few days after some of the major noise sources were fixed.  It shows 2 poles with major noise, and 1 with a minor to moderate noise level (detailed pole #s & addresses).  There are others that have made noise, so they are probably intermittent problems, making them harder to find and fix.

*** October/November, 2007, IN THE FIELD, VHF/UHF ***  (117 mb, 8 min)  I had not done any pole-hunting in a long time, so I finally decided to do so.  With the right equipment, finding the poles is easy.  And with so many poles around me that are noisy, I easily bagged 6 of them in about 30 minutes (detailed pole #s & addresses).  If I had spent another hour at it, I could have found another 5 to 10 bad poles.  This video, though long, shows the essence of how I hunt poles -- and it is proof that these poles are indeed creating harmful interference.  Due to the length/size of this video, I took one little piece of it out as a short sample of pole-hunting -- it is here (12 mb, 58 sec).  Handheld equipment is Yaesu FT-60 on 70cm AM, and an Arrow 7-element beam.  See the "how I find noisy poles" link at the left.

September 14, 2007, VHF/HF (20 mb, 1 min 29 sec)  I hadn't made a recording for a while, and realized it was time to once again document the ongoing, almost-ceaseless, never-ending problem of harmful interference from nearby power poles.  In this clip, we see HF and VHF, pointing S, NE, and then W.  At the time of the recording, 3B7C was on 21.022 MHz, but of course it was not to be for me, because of you-know-what.

June 25, 2007, VHF/6m (8 mb, 35 sec)  Another 6m opening to EU.  In this short video, you'll see the 6m map, and then the rig and the incessant buzzing -- what you won't hear is a signal from Europe -- because I couldn't hear one either, even after band conditions changed favorably, where some stations even farther west were working EU.

June 6, 2007, VHF/6m (5 mb, 19 sec)  Sure enough, a short 6m band opening to Europe.  A neighbor worked an ON4 in grid JO20 -- and this video is what I was hearing with my antenna pointed NE toward Europe.  This is a picture of the 6m map:

The big long red line from Texas to Belgium was created by the packet cluster spot when my neighbor worked the ON4.  In a few brief times where the interference stopped, I could hear the ON4 calling CQ on 50.096, Q5 S1, but there was no point answering him since I would not have been able to hear his reply.  HARMFUL INTERFERENCE!

June 4, 2007, VHF/6m (5 mb, 17 sec)  Yep, just more S9 power line noise, this time from the west.

March 2, 2007, HF & VHF (7mb, 33 sec.;  even at 8am in the morning it is bad -- it will get worse in the afternoon, and as summer approaches)
February 20, 2007, HF & VHF (11mb, 53 sec.)  I hadn't recorded anything in a while, not because the noise has been fixed, but because it simply has not changed.

October 2, 2006, HF & VHF, looking NE (8mb, 41 sec)  This is typical;  this is how it is most of the time, in most directions;  this is what I live with;  I picked NE because that is where I point most of the time (east coast & EU), and because that is where the worst of the power line noise started over 3 years ago, but there are multiple sources in many directions, all bad
September 14, 2006, 6m & 2m, turning the antenna to document the noise in all directions (31mb, 2 min.)  The noise wasn't as bad today as it sometimes is, but it was coming from many sources/directions -- in this video, we see 6m & 2m as I turned the antenna.
July 31, 2006, in the field - noisy pole at end of my driveway (9mb, 39 sec.)  Video made in the field - I haven't done much pole-hunting lately, because they simply don't get fixed, even when I identify the specific pole -- here is one example of many -- an example of the use of a handheld UHF yagi
July 31, 2006, 15m looking NE, trying to hear 4O3T (7mb, 28 sec., HF/15m, mostly SSB, AM at the end)  You can sort of hear 4O3T at the 21-23 second mark -- no, I didn't work him on 15m, not because he wouldn't have heard me, but because I wouldn't have been able to tell if he came back to me -- he would have been an easy Q5 without the power line noise
July 26, 2006, VHF & HF looking NE (5mb, 26 sec.)  This is a pretty bad one, but not atypical.
June 29, 2006, VHF looking in all 4 directions (21mb, 1 min. 25 sec.)  Noise from multiple sources.
June 24, 2006, HF and VHF, looking west (9mb, 38 sec.)  Harmful interference from the pole at the end of my driveway.
June 16, 2006, HF and VHF, looking SSW (6mb, 24 sec.)
June 14, 2006, 2m, looking north (11mb, 43 sec.)
June 14-29, 2006, many different days, bands, directions (96mb, 6.5 min., large file)
July 12, 2004, 2mAM, 6mAM, 2mSSB (.wav sound file only, 2mb, 22 sec.)

(other files coming later)

Equipment setup: Icom IC-746PRO, 6m: 5 element beam at 70', 2m: 9 element beam at 67', and HF: modest 10/12/15/17/20 beam at 64'; each are fed with LMR-600.

Comments on these files are welcome -- please see the "contact us" link at the left.