strange SNR junps

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sybertiger

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so as u all know my line went to **** 4months ago

so last night I went to change isps and saw a snr of 9-9.5 @8mb was shocked as I run at bare minimum for the past months usaly around 5-6

so loged in to see the stats this morning was back at 5.x


now loadshedding hit connected it to my invertor and snr said 14.5!!! @8mb rebooted the router and still get that 14.x so why did it do that something at Telkom that makes it droped in the day,just a luckey day

and now with this 14.x is it something electrical in my house that makes it so low in general,but then again it was like that in the past -12snr @8mb
 
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My domestic would sometimes push the phone line that goes to my router up against an adapter. This caused a massive drop in SNR for me.

Another time, I had a dodgy power adapter causing noise that my adsl router picked up. It wasn't even on the same sockets outlet.
 
thanks all I just think I know where the problem is the whole houses power as I tried different wall plugs etc get the same problem but with the invertor I get clean power

now im no electrician where do I start to see if that's well the case?
 
sybertiger said:
thanks all I just think I know where the problem is the whole houses power as I tried different wall plugs etc get the same problem but with the invertor I get clean power

now im no electrician where do I start to see if that's well the case?
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Unplug various electronics and adapters one by one and see if you can find the culprit the causes your SNR to drop. As I said, my issue was a noisy power 2 prong power adapter in another room. You'll be surprised how one little insignificant thing can feed noise back into your power.

Have you bought anything new in the last few days that plugs in?
 
nope everything should be around the same,but i will think harder maby there was something small dont remember,

power went on,pluged router back in main power boom 5.8snr

cant test invertor one atm as the battery's to flat :( on charge atm

but now i know my line is fine,just have to test every plug

thank you all again

never know something can affect it that so small and even in another room
 
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sybertiger said:
nope everything should be around the same,but i will think harder maby there was something small dont remember,

power went on,pluged router back in main power boom 5.8snr

cant test invertor one atm as the battery's to flat :( on charge atm

but now i know my line is fine,just have to test every plug

thank you all again

never know something can affect it that so small and even in another room
Click to expand...

Try powering your router through a UPS.
 
ok so power went on charged the battery for a few min tested it again

all plugs in like normal, just the router into invertor still got 5.5snr
turned off the mains and just used the invertor still gotten under 6db

used as i used it wile load shedding nope still 5.x db and not 14.x like it was wile loadshedding

can it be something els that affects our line like that?


edit 10:39am just randomly jumped to 8-9db with out doing anything


EDIT 11:37 still at 8db, so must be something from myhouse to the exchange that makes interference
will test again at loadshedding tomorrow ,but how can i proof to telkom that i well did get that snr as we all know how telkom works
 
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update,this morning back at 5.1 ,loadshedding atm and sitting at 14.7 going to log a fault tomorrow
 
When I power my modem/router through a UPS with AVR, the SNR is marginally higher (couple of dB) and the connection is more durable. Particularly for those times when bursts of noise would otherwise cause DCs. So I'm guessing there's RFI coming from the mains where I live.
 
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