Hi I keep loosing my broadband connection during thunderstorms, I am sure this never happened in the previous years. I usually loose it about an hour before the storm appears here, and then for the duration of the storm. Would this be an exchange problem (or is it a totally a silly question)
Kind Regards - Nick Daniels
Hi,
On Thu, 14 Jun 2007, Nick Daniels wrote:
Hi I keep loosing my broadband connection during thunderstorms, I am sure this never happened in the previous years. I usually loose it about an hour before the storm appears here, and then for the duration of the storm.
I kept loosing my connection last night while I was on #alug during last night's thunderstorm. Never really had this before while I was in another part of the country.
Srdjan
On Thu, 2007-06-14 at 19:14 +0100, Nick Daniels wrote:
Hi I keep loosing my broadband connection during thunderstorms, I am sure this never happened in the previous years. I usually loose it about an hour before the storm appears here, and then for the duration of the storm.
I think a lot of it is dependant on what portion of your lines are on overhead cables, as naturally these are more susceptible to induced voltage spikes from nearby strikes and/or seem to be more prone to connection problems at the termination points.
It could also be Exchange based though, I have heard rumours before that some smaller exchanges don't have "all" the equipment on redundant supplies..perhaps in your case this includes the DSLAM :-)
On Thursday 14 June 2007 23:45, Wayne Stallwood wrote:
On Thu, 2007-06-14 at 19:14 +0100, Nick Daniels wrote:
Hi I keep loosing my broadband connection during thunderstorms, I am sure this never happened in the previous years. I usually loose it about an hour before the storm appears here, and then for the duration of the storm.
I think a lot of it is dependant on what portion of your lines are on overhead cables, as naturally these are more susceptible to induced voltage spikes from nearby strikes and/or seem to be more prone to connection problems at the termination points.
It could also be Exchange based though, I have heard rumours before that some smaller exchanges don't have "all" the equipment on redundant supplies..perhaps in your case this includes the DSLAM :-)
Hi Wayne I think nearly all three miles to exchange is overhead based. I have noticed I am cut off before the storm if the storm comes from the direction of the exchange. I also, as a radio ham, am often cut off if I transmit on the 3.5MHz to 3.8MHz band, apparently this is not uncommon. I was reading in the RSGB publication last night that "some high power operators are destroying the ADSL cards in the exchange" when tranmitting on this band. (High power = 400w max.) I do have two 40 foot ham radio masts in the garden but these are fitted with static discharge.
Kind Regards - Nick Daniels
Nick Daniels wrote:
On Thursday 14 June 2007 23:45, Wayne Stallwood wrote:
On Thu, 2007-06-14 at 19:14 +0100, Nick Daniels wrote:
Hi I keep loosing my broadband connection during thunderstorms, I am sure this never happened in the previous years. I usually loose it about an hour before the storm appears here, and then for the duration of the storm.
I think a lot of it is dependant on what portion of your lines are on overhead cables, as naturally these are more susceptible to induced voltage spikes from nearby strikes and/or seem to be more prone to connection problems at the termination points.
It could also be Exchange based though, I have heard rumours before that some smaller exchanges don't have "all" the equipment on redundant supplies..perhaps in your case this includes the DSLAM :-)
Hi Wayne I think nearly all three miles to exchange is overhead based. I have noticed I am cut off before the storm if the storm comes from the direction of the exchange. I also, as a radio ham, am often cut off if I transmit on the 3.5MHz to 3.8MHz band, apparently this is not uncommon. I was reading in the RSGB publication last night that "some high power operators are destroying the ADSL cards in the exchange" when tranmitting on this band. (High power = 400w max.) I do have two 40 foot ham radio masts in the garden but these are fitted with static discharge.
Kind Regards - Nick Daniels
It is interesting you should mention that as I completely knock out my broadband when I transmit on 3.5-3.8 MHz too and the other night I managed to lock up my Netgear router too when running 50w of CW.
Simon
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On Friday 15 June 2007 10:32, Simon Jude wrote:
It is interesting you should mention that as I completely knock out my broadband when I transmit on 3.5-3.8 MHz too and the other night I managed to lock up my Netgear router too when running 50w of CW.
Simon
Hi Simon Does that mean there is RF near router? Mine is a Netgear too. I have not trouble when I use my vertical 50m from the house., but when I use 80m half wave sloper terminated about 5m from house, Netgear drops out (all on 80m SSB or CW)
Has anyboy had any success on CW sending programs with Linux?
My hearing is going and I find it much harder to send without hearing sidetone. I have had a lot of success with all modes including CW decode with GMFSK, but not with CW TX
I found this in FLdigi help file "You might ask why fldigi doesn't simply provide a keyline output on one of the parallel port pins or on RTS or DTR via a comm port. The answer is quite simple. Linux is a multi-tasking operating system and the interaction between the OS and the application causes the timing to be adversely effected. The driver implementation of the audio sub system must be responsive and so the OS gives that sub system a very high priority in its multi-tasking structure." Which could explain the CW send problem. Better go there is thunderstorm coming :)
Kind Regards-Nick Daniels
P.S. just got your mail Wayne tnx for info.
Pretty interesting stuff Nick, ADSL spectrum is (AFAIK) 300-3400 Khz so I can see why transmitting at high power nearby would cause a problem.
Incidentally my phone line is underground from the point it leaves my house to the point it enters the exchange and I have never had connection problems during a storm.
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Nick Daniels -
Simon Jude -
Srdjan Todorovic -
Wayne Stallwood