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#1
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A few months ago we had a discussion going here about my line noise problem
here in NJ. I am happy to report the problem got fixed today, and K2XT is one happy Dude ! I further want to warn 80 meter and 160 meter DX ops that I am back on the lower bands this winter, have QRO, and so look out Baby, I'm going to be able to hear that DX! In great summary what we found a couple months ago was, driving from my house along the roads near here, we could locate line noise by using my FT-100 transceiver on different bands, in AM mode. Although the noise causes me the most problems on 80/160 my attempts at DF'ing it on those bands were useless. On ten and six meters the noise can be heard 1/4 to 1/2 mile away from the source. Switch to 2 meters and I could get a lot closer where the noise originated, within +/- 100 yards or so. Switch to 440 and I could tell within a few poles. Then as I reported before I built up a 440 MHz Quagi which enabled me to stand across the road from the offending pole and definitely pinpoint it. Here's where it gets interesting. The particular technician I was working with from the power company has had great success using a hand held acoustic tool. This thing even has a gun sight on it to enable him to pinpoint the offending insulator/lightning arrestor/bad crimp, etc. On this pole however, he couldn't get a good reading. Today a crew worked on it, and finally determined it was a bad transformer feeding two houses. I guess that explains why the acoustic tool was ineffective. I had the 10 m receiver here set so that when the noise level dropped 6 db the squelch would close and so I was able to know instantly when they had fixed it. This noise source was 1.2 miles from my house. Noise was S9+5 db on 80 m with a Beverage antenna, S8 on 10 meters with a 3 ele beam. Having the beam indicate the direction to look was very important. A very frustrating 12 months + 6 days from the time I first reported it. 80 meters right now sounds like there's no antenna connected. This is wonderful. Rick K2XT |
#2
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On Tue, 25 Aug 2009 19:09:58 GMT, "Rick" wrote:
A few months ago we had a discussion going here about my line noise problem here in NJ. I am happy to report the problem got fixed today, and K2XT is one happy Dude ! I further want to warn 80 meter and 160 meter DX ops that I am back on the lower bands this winter, have QRO, and so look out Baby, I'm going to be able to hear that DX! In great summary what we found a couple months ago was, driving from my house along the roads near here, we could locate line noise by using my FT-100 transceiver on different bands, in AM mode. Although the noise causes me the most problems on 80/160 my attempts at DF'ing it on those bands were useless. On ten and six meters the noise can be heard 1/4 to 1/2 mile away from the source. Switch to 2 meters and I could get a lot closer where the noise originated, within +/- 100 yards or so. Switch to 440 and I could tell within a few poles. Then as I reported before I built up a 440 MHz Quagi which enabled me to stand across the road from the offending pole and definitely pinpoint it. Here's where it gets interesting. The particular technician I was working with from the power company has had great success using a hand held acoustic tool. This thing even has a gun sight on it to enable him to pinpoint the offending insulator/lightning arrestor/bad crimp, etc. On this pole however, he couldn't get a good reading. Today a crew worked on it, and finally determined it was a bad transformer feeding two houses. I guess that explains why the acoustic tool was ineffective. I had the 10 m receiver here set so that when the noise level dropped 6 db the squelch would close and so I was able to know instantly when they had fixed it. This noise source was 1.2 miles from my house. Noise was S9+5 db on 80 m with a Beverage antenna, S8 on 10 meters with a 3 ele beam. Having the beam indicate the direction to look was very important. A very frustrating 12 months + 6 days from the time I first reported it. 80 meters right now sounds like there's no antenna connected. This is wonderful. Rick K2XT You are a lucky guy :-) w. |
#3
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Rick wrote:
A few months ago we had a discussion going here about my line noise problem here in NJ. I am happy to report the problem got fixed today, and K2XT is one happy Dude ! I further want to warn 80 meter and 160 meter DX ops that I am back on the lower bands this winter, have QRO, and so look out Baby, I'm going to be able to hear that DX! In great summary what we found a couple months ago was, driving from my house along the roads near here, we could locate line noise by using my FT-100 transceiver on different bands, in AM mode. Although the noise causes me the most problems on 80/160 my attempts at DF'ing it on those bands were useless. On ten and six meters the noise can be heard 1/4 to 1/2 mile away from the source. Switch to 2 meters and I could get a lot closer where the noise originated, within +/- 100 yards or so. Switch to 440 and I could tell within a few poles. Then as I reported before I built up a 440 MHz Quagi which enabled me to stand across the road from the offending pole and definitely pinpoint it. Here's where it gets interesting. The particular technician I was working with from the power company has had great success using a hand held acoustic tool. This thing even has a gun sight on it to enable him to pinpoint the offending insulator/lightning arrestor/bad crimp, etc. On this pole however, he couldn't get a good reading. Today a crew worked on it, and finally determined it was a bad transformer feeding two houses. I guess that explains why the acoustic tool was ineffective. I had the 10 m receiver here set so that when the noise level dropped 6 db the squelch would close and so I was able to know instantly when they had fixed it. This noise source was 1.2 miles from my house. Noise was S9+5 db on 80 m with a Beverage antenna, S8 on 10 meters with a 3 ele beam. Having the beam indicate the direction to look was very important. A very frustrating 12 months + 6 days from the time I first reported it. 80 meters right now sounds like there's no antenna connected. This is wonderful. Rick K2XT Congratulations. Your persistence really paid off. -- Tom Horne "This alternating current stuff is just a fad. It is much too dangerous for general use." Thomas Alva Edison |
#4
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![]() "Rick" wrote in message ... snip Today a crew worked on it, and finally determined it was a bad transformer feeding two houses. I guess that explains why the acoustic tool was ineffective. I If you were getting clobbered at your distance, those two houses must have had little or no BCB reception. Sal |
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