>> almost like a constant ADSL frequency transmittion even though no actual data may be travelling to/from the exchange?
yep - as a kind of check that the line is still up and functioning ok.
Ahh excellent
I wasnt completely sure, but you learn something every day!
Jamie - good pics... just another thought and something else to put in the mix... the train lines. In the past I recall reading something somewhere when a high speed train was causing problems too, unfortunately I cant remember the when where or whats.
Im wondering if the spikes could coincide with a train passing by?
Yup this seems to be the case most of the time, only with some trains though, sometimes they have no effect. Its definately electromagnetic interference, which can be heard on the AM radio as well, I guess produced by the substation / other electronics on the railway working when they're needed (?). Not much that can be done about it though. However things have dramatically improved since removing the ring wire, which amplified the noise i presume, and after using the netgear dg834g it is maintaining a stable connection at just over 5000kb/s.
As another interesting point, I've been round to my neighbours whos on the next telegraph pole along (sharing with the power pole eww) and they are syncing at 995 Kbps or something crazy, their attenuation is changing between 50-60db and theyre getting almost double speeds when the phone rings. Sounds like bad wiring, infact i
think they're not even using a microfilter. (or its in the wrong place?
)Can you believe it? I might go round soon and investigate!
