Railroad tracks COULD quite easily be a CARRIER of the Hum, for sure. Not grounded/earthed, joined to be electrically conductive along their entire length.. Cover long distances in a straight (read: antenna) line. ELF could get on a track, but where's the ELF coming from in the first place?
DC stated 58Hz, same as a lot of folks over here, that's 60Hz sine wave distortion. Actually, the way it works is 58-63 and back again continuously - the sub and then the inter harmonic - Reacts with the 60Hz and you're left with 2plus3=5Hz. With the Sound Measurement Analysis software suite it's easily seen that the harmonics continue UP and DOWN from the 60Hz main sine wave. FCC law makes manufacturers to look UP the frequency range to the 37th harmonic. As a consequence, no one ever looks DOWN between 0 and 60Hz. And no electrical utiility is made to check their lines for emissions of any sort. No railroad track near me. Freeway is 4 miles away. Electricity power lines.........138KV, 3-phase right outside my window, 60ft away and at eye level (3rd floor apartment) On Dec 16, 3:41 pm, Trev <[email protected]> wrote: > I live quite near [~1km] train tracks [Deisel /Elec], 3 lane motorway > and pylons. Shazzam! > I've wondered in the past if whatever 'is about' , ELF wise, couldn't > easily couple into train tracks. Low impedance, fixed geometry and > pretty conductive- able to be excited by leakage currents from > overhead lines. I can imagine them humming at about 28 Hz quite > readily. > Not sure what the resonant freq of track is...but my hum is pretty > insistent over the years. > Pete [Auxset] works in transport... his him is recently back , so > maybe he'll pick up on this. > > On Dec 16, 8:02 pm, Vic <[email protected]> wrote: > > > > > Hi DC - Know how you feel, I was in the same boat myself for over a > > year. > > > If you use the Spectrum Analysis software that I posted toady you'll > > now be able to see exactly what it is and where it originates. Run the > > Measurement tool and the the analysing tool. If you've got a lot of > > activity around 60Hz.....go figure. > > > Let's make a simple statement here - Cell phone dish transmitters > > output 100 Watts, they're on masts at a specific height so that by the > > time the transmission signal "balloons" out and gets to the floor/ > > ground it's only 4 Watts max. (FCC Reg.) This 100 Watts (think of a > > 100W light bulb) covers an area with a RADIUS of 400 miles in under > > 1.5 milliseconds. > > > Catch up on your reading on this site, lots of ideas, lots of > > discussion. And please keep coming back, we've got to stop this > > "thing", it is a monstrosity. > > > On Dec 16, 2:16 pm, DC <[email protected]> wrote: > > > > The hum… > > > My story goes like this. I’m a 41 year old man with a stable life and a > > > happy marriage. I own a condo in Fremont near the Mission/Mowry area. > > > About 6 weeks ago I started to hear this low level rumbling noise that > > > seemed to exist only in my house. I’ve done all the things from turning > > > off power, water, gas and still, the rumbling continues. It seems to peak > > > at certain times, late night and early morning hours. It is so strong > > > sometimes that I can feel vibration in my chest. It also seems worse in > > > parts of the condo where noise naturally reverberates. I know these > > > locations because, when I use a subwoofer with the entertainment system > > > the sound is stronger in these areas. My wife does not hear it and > > > neither do my immediate neighbors. I have heard it once outside when > > > crouching down near the backyard door and concrete slab, and once sitting > > > in my car with the windows rolled up in the parking lot at work. I have > > > walked and driven around the neighborhood > > > to find nothing. I thought it could be tinnitus, but after speaking to a > > > doctor and doing some reading, I’m not convinced that I have this hearing > > > problem. Then a couple of nights ago I came across this web page > > > describing perfectly what I’ve been experiencing. I did more searching > > > and found some more to read. I feel better now that I’m not alone and > > > have some comfort knowing that for the most part, it’s in the environment > > > and perhaps only mindfulness and mediation will help. It’s true, it has!! > > > However, I need to know more!! But, at this point and after discovering > > > that in some way this could be looked at negatively and ridiculed by > > > others, I don’t want to talk about it so much. I’m sorry but mankind in > > > general is far from enlightened when it comes to compassion. It’s easier > > > to brush off people than trying to understand them. Hu well, such is > > > life. Still the story continues and I’m getting to what I think may be > > > the root of this > > > problem!!! > > > Folks describe this sound like a diesel engine idling far, near, and > > > somewhere in between. Well, what if it is? What if that’s all it is and > > > the tracks actually transmit this low frequency 58hz low rumbling noise > > > that only few of us can detect, but not only noise also the vibration! > > > Train tracks are everywhere in the world, both in rural and urban areas, > > > train locomotives do sit at idle frequently, when stopped at stations and > > > just waiting for other train traffic at intersections. I know this > > > because my condo is the 2nd building away from a major train tracks > > > intersection in the Niles/Mowry area. The train makes exactly this low > > > level rumble noise, and the locomotive is a very large diesel engine. > > > It’s a cargo train so it travels slowly and does sit at idle all the > > > time!!! My wife says I have bat hears because I’ll hear the train quite a > > > few minutes before we can see it at all. The thing now is, the train goes > > > by and I still hear the hum….Now, > > > trains weren’t always diesel engines and train tracks not as prevalent, > > > what if it’s just the sheer volume of more tracks and more trains. The > > > odd thing for me is that, I started to hear this hum right around the > > > time that work was done on the tracks. Every once in a long while, > > > maintenance is performed and I’ve seen numerous track repair vehicles > > > sitting on the tracks. I actually like the low level rumble the train > > > makes, it muffles everything else around and can be soothing. But, I > > > don’t exactly want to keep it hearing and feeling it throughout my place > > > this frequently. Some of the places that have brought this forth I’m sure > > > have numerous train tracks around, Bristol, England, Kokomo, Indiana, > > > Taos, New Mexico, and the little town of Largs in the west coast of > > > Scotland. How about the folks in Mountain View, CA – I know cal train > > > runs through this area but these trains run fast. However, they do sit at > > > idle at stations when loading and > > > unloading passengers. Most are diesel engines, not electric. I think > > > this warrants some research. I realize some folks may not live near > > > trains or tracks, but depending on if rural or urban couldn't noise > > > travel say 500 to 1000 miles?- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/hum-sufferers?hl=en.
