| Author |
Message |
    
Bigbob
Senior Member
Username: Bigbob
Post Number: 2138
Registered: 12-2001
| | Posted on Saturday, August 20, 2005 - 12:53 pm: | 
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They are getting ready to offer dsl here in Central Lake,and there equipment at the switching station produces a dead carrier on ch. 23 am but switch to ssb and it is an oscillating tone pegging the s-meter within 300 feet and giving one s-unit out to 7 miles and needless to say I'm within 300 feet.On ch 36 to 40 it is static of one s-unit just enough to cover up weak stations north of me,poop,the tone if it were solid would sound something like this bee-beeeeep-boop.We can't mess up phone conversations but it seems they can do anything they like.Bigbob |
Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 684
Registered: 6-2004
| | Posted on Saturday, August 20, 2005 - 1:56 pm: |
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If you're sure that it's their equipment then stop by the CO when someone is there and tell them. It's possible that they don't know about it and would appreciate knowing that there is a problem. It's possible that this is a harmonic of a test tone that they're using to test the general DSL coverage on the lines in the neighborhood. The most common type of DSL right now is called DMT or Discreet Multi-Tone and it splits the available spectrum into 256 tones that can be adjusted for various line conditions. Any of those tones might be getting rectified by some electronic device on a telephone line causing your problem.
Is it an older neighborhood? They could also just be testing or even documenting wire pairs with a tone generator in preparation for DSL installations. There are lots of devices that would kill DSL on a telephone line and they could be testing for those. The lack of documentation by telephone companies is amazing. A tech will add a device to a line and never bother to document it, and until someone tries to get DSL installed on the line noone knows about it. Even their MLTs won't show all kinds of devices, and a tech dispatch is necessary to find the problem/device. |
Bruce
Senior Member
Username: Bruce
Post Number: 3061
Registered: 9-2003
| | Posted on Saturday, August 20, 2005 - 7:21 pm: |
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I have verizon DSL it works great! |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2141
Registered: 12-2001
| | Posted on Saturday, August 20, 2005 - 8:44 pm: |
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They're producing the same tone at all five of their switching stations in five different towns,not enough cbers to care I guess,but a trucking company that still uses 19 in one town may have got them to shut theirs down intermittantly as it does not run in the evening,I will try to locate a worker and let him listen to my mobile radio.Bigbob |
Hotwire
Intermediate Member
Username: Hotwire
Post Number: 489
Registered: 1-2005
| | Posted on Sunday, August 21, 2005 - 3:36 am: |
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I can hear that sound to on 23 AM also in the Indianapolis area. Been doing it for as long as I can remember. Multiple tones and fast like a ditditditdit datdatdatdat..pause....datdatdatdat ditditditdit. Wondered for years what it could be and can be heard for miles when skip is strong. I do know that it gets really strong when I get near hospitals downtown Indy. Also I get a constant carrier on 37 AM in the Franklin area,1 and sometimes 3 s units of white noise when all channels are dead silent 0 s units. |
Yankee
Advanced Member
Username: Yankee
Post Number: 842
Registered: 7-2003
| | Posted on Sunday, August 21, 2005 - 9:17 am: |
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Back home years ago in upstate New York. The local hospital had some of their equipment causing a tone on channel 23, like bee bop dee bop for hours on end. I later found out the hospital heard from the FCC and the tone stopped, must be they somehow filtered the equipment. |
Stickshift
Intermediate Member
Username: Stickshift
Post Number: 244
Registered: 7-2003
| | Posted on Sunday, August 21, 2005 - 3:07 pm: |
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Here in the town I live in, there is also a tone emitted on 27.255. I have heard it mobile from as far away as 15 miles. The first day I heard it, I was puzzled as to what it was and began foxhunting immediately. It turned out to be a pagging system at a local bar in town here. It is used to page the waiting staff when an order is ready. I've talked with the owners, who happen to be good friends of mine, about the situation. They normally turn the transmitter off when not needed. As of today, it is on and sometimes is overlooked after business closes for the weekends. As I never use this frequency, it is not a major issue for me. When using inexpensive radios or exports, the receivers tend to have poor selectivety and therefore splattering accross the entire 40 channels of citizens band is not uncommon. This can be a real pain for most operators. My Cobra 2000GTL does a very good job of rejecting this noise on adjacent channels. Try a few different radios, if possible, and see what you come up with. Do some foxhunting to back up your theories and let the business(') know what's going on. If they have a problem on their end, it's their responsibility to repair it. |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2156
Registered: 12-2001
| | Posted on Monday, August 22, 2005 - 5:34 am: |
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It is the switching station without a doubt,it has overhead telephone cables,verizon that is,used to be gte,cheap equipment,they are now running orange cable every where.The electric company buried half of it's service in town recently,whish verizon would follow suit ala ameritech,every year a truck hauling a sail boat snags one and no telephone for 2 days,duh,either bury the cables or put them up higher at street crossings.Bigbob |
Kennjen
Member
Username: Kennjen
Post Number: 50
Registered: 6-2005
| | Posted on Thursday, August 25, 2005 - 11:20 am: |
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Report the emission to FCC. Just make sure that you have good evidence to back it up. They have the responsibility to keep superflous emmisions to a minimum.
However, before doing that, it would be a good neighboring thing to walk over and talk to some one responsible for the CO. Who knows, it may turn out to be the vacumm the maintenance crew is using or some thing stupid like that....
Ken. |
Allagator
Advanced Member
Username: Allagator
Post Number: 676
Registered: 9-2002
| | Posted on Monday, August 29, 2005 - 7:28 pm: |
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BIGBOB !!
i had the same noise when my neighbor got his DSL ! but i called them and they got it fixed ! but funny thing is im 478 yards from his house and i cant get DSL ???? now that STINKS !!!!!!
Allagator
CEF115 |
Hollowpoint445
Advanced Member
Username: Hollowpoint445
Post Number: 721
Registered: 6-2004
| | Posted on Tuesday, August 30, 2005 - 6:15 am: |
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There could be all kinds of reasons why your wire pair doesn't qualify for DSL but your neighbor's does. You could backhaul to a different switching office which doesn't have DSL equipment, your line might connect to an analog switch bank rather than digital (only sometimes matters), it could be as simple as your wire pair is too long - not necessarily physical length but electrical length, it could be interfering devices installed on the line, your line could actually be piggy backed on someone else's wire pair, your wire pair might be slightly damaged which doesn't cause a problem with normal telephone service but would interfere with the DSL signal....I could go on and on and on. |
