Line far worse than my neighbour - same cable on same pole
@HP
Now, that's interesting you should mention about the OpenReach NTE5a & I-plate, because they do have a common-mode filter in them, but as far as I'm aware the Filtered Faceplates do not have a common-mode filter, & Jules was already using a Filtered FacePlate. Also, it's that long ago since I saw an RF3, I can't remember what is in them or the spec.
@Mal
Whilst your theory is sound, you need to remember that the field strength could still be high enough that with a bad joint somewhere (which there may be on Jules line) or a small bit of poorly designed circuit, or a semiconductor device that happens to be sensitive to a given (band of) frequencies - strange effects can occur!
@Jules
You aren't looking in the right place, I'll see if I can find you a picture. The significant bit is that it is OpenReach badged not BT Piper badged, can you confirm about yours and your neighbour's NTE5. Also you didn't happen to mention about this double socket and the few feet of cable
- how many feet and what type of cable is it? Nor did you mention about the 33Kv lines behind you 
where's Mand's persuading stick 
I know you said there was no difference in the figures when plugging into the test socket, but all the figures apart from a few kbps difference in sync would have had to have been identical - but never mind now.
Jelv's points are also valid, might explain any unexpected variations (or spikes) at anytime of day - the loading on the powerlines will vary during the day (and hence the radiation), depending on what it's supplying.
Anyway, I'm keen to see your latest stats, can you post some current ones as soon as you can?
Now, that's interesting you should mention about the OpenReach NTE5a & I-plate, because they do have a common-mode filter in them, but as far as I'm aware the Filtered Faceplates do not have a common-mode filter, & Jules was already using a Filtered FacePlate. Also, it's that long ago since I saw an RF3, I can't remember what is in them or the spec.
@Mal
Whilst your theory is sound, you need to remember that the field strength could still be high enough that with a bad joint somewhere (which there may be on Jules line) or a small bit of poorly designed circuit, or a semiconductor device that happens to be sensitive to a given (band of) frequencies - strange effects can occur!
@Jules
You aren't looking in the right place, I'll see if I can find you a picture. The significant bit is that it is OpenReach badged not BT Piper badged, can you confirm about yours and your neighbour's NTE5. Also you didn't happen to mention about this double socket and the few feet of cable
- how many feet and what type of cable is it? Nor did you mention about the 33Kv lines behind you where's Mand's persuading stick I know you said there was no difference in the figures when plugging into the test socket, but all the figures apart from a few kbps difference in sync would have had to have been identical - but never mind now.
Jelv's points are also valid, might explain any unexpected variations (or spikes) at anytime of day - the loading on the powerlines will vary during the day (and hence the radiation), depending on what it's supplying.
Anyway, I'm keen to see your latest stats, can you post some current ones as soon as you can?
I don't suppose Chris will see that until tomorrow.
I was just being a bit of a pedant about the double socket
I don't expect that it will have any effect whatsoever. But it's always nice to have as complete a picture as possible in these situations.
If I'd known about all the transmitters 4-5 miles away and the 33kV line, I think my view would have been shove some filtering in, and would have been much more upbeat about the benefits of an RF3. Well I'm glad it's made the significant improvement it appears to have.
I guess that because your overhead line is a different length to your neighbour's, it will be "tuned" at slightly different frequencies. I'd also guess that a lot of the noise may be coupled in from the powerlines, which themselves are nice antennae picking up all sorts, never mind the inherent problems that jelv mentioned.
As for the grey box I forgot to mention before, if it is about 5" across and 4" down and not quite rectangular, it will be just where some connections with jelly crimps are made (normally).
Let's hope things stay nice and stable. What sort of time did that last resync occur? Out of curiosity what are the current stats like?
I was just being a bit of a pedant about the double socket
I don't expect that it will have any effect whatsoever. But it's always nice to have as complete a picture as possible in these situations.If I'd known about all the transmitters 4-5 miles away and the 33kV line, I think my view would have been shove some filtering in, and would have been much more upbeat about the benefits of an RF3. Well I'm glad it's made the significant improvement it appears to have.
I guess that because your overhead line is a different length to your neighbour's, it will be "tuned" at slightly different frequencies. I'd also guess that a lot of the noise may be coupled in from the powerlines, which themselves are nice antennae picking up all sorts, never mind the inherent problems that jelv mentioned.
As for the grey box I forgot to mention before, if it is about 5" across and 4" down and not quite rectangular, it will be just where some connections with jelly crimps are made (normally).
Let's hope things stay nice and stable. What sort of time did that last resync occur? Out of curiosity what are the current stats like?
Quote from: julesandtash Noise 12.0dB (Downstream) / 14.0dB (Upstream)
Quote from: julesandtash Noise Margin 9.0dB (Down) / 14.0dB (Up)
Is DLM actually working?!?! Is that actually an unrequested downwards SNRM change, or is your downstream margin just fluctuating?
B.
May be tempting fate but so far so good. Been synced happily at 2848 for a few days, enough to pick up a 2500 profile and noise margin not dropping below 5dB at night.
The result below, taken a couple of minutes ago, is the best speed test result I have ever had since having broadband......
Thanks to everyone for their help and ideas.
The result below, taken a couple of minutes ago, is the best speed test result I have ever had since having broadband......
Thanks to everyone for their help and ideas.
Hi everyone - just an update.
I got rid of the first 2700HGV (which had had a couple of different firmwares on) to a friend and bought another one on eBay - sealed and brand new.
Plugged it in and used the javascript line to put my plusnet details in. Worked fine
Just before christmas it then upgraded itself to the BT version 6 firmware which caused me some concenrn but, to be honest, is better.
The router remembered my details and immidiately connected back to plusnet. The user interface is nicer and the router is definitely more stable.
I have now been connected at 2848Kbs for 23days. No drops at all and a nice solid 2500 profile.
Speed result as below.
Thats with a 9dB taget SNR (well last time it connected anyway, ie the 2nd January 2010). I have had a look in the router page at various times and have seen SNR drop to 5dB at times so I've still got a fair swing on my line but at least I have a decent connection now so I am letting sleeping dogs lie.
I got rid of the first 2700HGV (which had had a couple of different firmwares on) to a friend and bought another one on eBay - sealed and brand new.
Plugged it in and used the javascript line to put my plusnet details in. Worked fine
Just before christmas it then upgraded itself to the BT version 6 firmware which caused me some concenrn but, to be honest, is better.
The router remembered my details and immidiately connected back to plusnet. The user interface is nicer and the router is definitely more stable.
I have now been connected at 2848Kbs for 23days. No drops at all and a nice solid 2500 profile.
Speed result as below.
Thats with a 9dB taget SNR (well last time it connected anyway, ie the 2nd January 2010). I have had a look in the router page at various times and have seen SNR drop to 5dB at times so I've still got a fair swing on my line but at least I have a decent connection now so I am letting sleeping dogs lie.