150M : Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Yo,

So I just installed the Hub 3.0, activated the service ahead of that, but now my speeds have dropped drastically. I was expecting my 100m service to hit near 150m but am getting around 5mbs at most. It was working fine before the 'upgrade'. I phoned VM and they 'did things at their end' but it hasn't worked, they then said there is a fault in the area and it will be slow in peak times but since it was working fine prior to this and since I can't find an error on the website I am not convinced.

Any ideas?

[TAZMANUK]

Hi

Login to the hub and see how many download channels you see if you see about 3 then give the hub a reboot and recheck channels and redo speed test

Might have failed to lock on.

Is this it? Only have one...

[img]Download Failed (1)[/img]

---------- Post added at 20:43 ---------- Previous post was at 20:06 ----------

Is there a way to go back and use the old superhub?

[sollp]

Originally Posted by Damien

Is this it? Only have one...



---------- Post added at 20:43 ---------- Previous post was at 20:06 ----------

Is there a way to go back and use the old superhub?

Poor SNR on D/S channel hub now having trouble locking on because of this

[jb66]

snr too low, you have a signal fault regardless of what hub you use, are your fittings tight? can you remove any attenuators

So I attempted to reattach the cord and found this inbetween the hub and the cable:

http://i.imgur.com/10J5LxE.jpg

and now, either cocidence or not, I am getting:

Downstream bonded channels
Channel Frequency(Hz) Power
(dBμV) SNR
(dB) Modulation Channel ID
1 298750000 1 32.2 256 qam 13
2 322750000 -1.7 33.4 256 qam 16
3 314750000 -1.2 32.5 256 qam 15
4 306750000 0.7 32.3 256 qam 14
5 290750000 -0.5 31 256 qam 12
6 282750000 -0.9 29.4 256 qam 11
7 274750000 0.5 29.8 256 qam 10
8 266750000 1.5 31.1 256 qam 9
9 258750000 0.7 32.2 256 qam 8
10 250750000 0.5 33.3 256 qam 7
11 242750000 1.2 33.8 256 qam 6
12 234750000 2.2 31.6 256 qam 5
13 226750000 1 25.9 256 qam 4
14 218750000 0 24.2 256 qam 3
15 210750000 0.2 26.7 256 qam 2
16 202750000 0.9 26.6 256 qam 1

I also tried to tighten the connections a bit although that didn't feel like it had much to give however now on Speedtest I think 80mbs but the web itself is still going very slow

---------- Post added at 21:12 ---------- Previous post was at 21:07 ----------

Checked again:

Downstream bonded channels
Channel Frequency(Hz) Power
(dBμV) SNR
(dB) Modulation Channel ID
1 298750000 3.7 37.3 256 qam 13
2 322750000 2.7 37.3 256 qam 16
3 314750000 3 37.6 256 qam 15
4 306750000 3.2 37.6 256 qam 14
5 290750000 3.2 37.6 256 qam 12
6 282750000 3 37.6 256 qam 11
7 274750000 3 37.6 256 qam 10
8 266750000 3.2 37.6 256 qam 9
9 258750000 3 37.6 256 qam 8
10 250750000 3.5 37.6 256 qam 7
11 242750000 3.9 37.6 256 qam 6
12 234750000 4 38.6 256 qam 5
13 226750000 3.9 38.6 256 qam 4
14 218750000 4.3 38.9 256 qam 3
15 210750000 4.3 38.6 256 qam 2
16 202750000 4.3 38.6 256 qam 1

[General Maximus]

Those power levels are fine and if you are getting 80mbits on your 100mbit connection then I wouldn't be worried too much just yet, you can put it down to Saturday evening traffic. I hate to ask a stupid question but why were you expecting to get 150mbits out of your 100mbit connection?

[jb66]

How's your upstream power levels?

Originally Posted by General Maximus

Those power levels are fine and if you are getting 80mbits on your 100mbit connection then I wouldn't be worried too much just yet, you can put it down to Saturday evening traffic. I hate to ask a stupid question but why were you expecting to get 150mbits out of your 100mbit connection?

It should be 150mb. I got the Hub 3.0 as part of the speed upgrade.

---------- Post added at 07:42 ---------- Previous post was at 07:41 ----------

Originally Posted by jb66

How's your upstream power levels?

I'll check later. Currently getting 30mb.

Today's downstream:

Channel Frequency(Hz) Power
(dBmV) SNR
(dB) Modulation Channel ID
1 298750000 2.4 31.6 256 qam 13
2 322750000 -0.9 34.3 256 qam 16
3 314750000 -0.4 32.8 256 qam 15
4 306750000 1.5 31.8 256 qam 14
5 290750000 0.9 30.7 256 qam 12
6 282750000 0.2 30.2 256 qam 11
7 274750000 1.2 29.9 256 qam 10
8 266750000 2.4 30.9 256 qam 9
9 258750000 1.9 32.8 256 qam 8
10 250750000 1 33.8 256 qam 7
11 242750000 1 31.9 256 qam 6
12 234750000 2.5 31.3 256 qam 5
13 226750000 1.7 26.1 256 qam 4
14 218750000 0.5 24.2 256 qam 3
15 210750000 1.4 24.1 256 qam 2
16 202750000 2.2 25.2 256 qam 1

Upstream:

Channel ID Frequency(Hz) Modulation Power
(dBmV) Mode Channel Bandwidth(Hz) Symbol Rate (ksps)
10 39400000 ATDMA 43.8 16 qam 6400000 5120
12 25800000 ATDMA 46.3 16 qam 6400000 5120

[General Maximus]

upstream is absolutely fine but you still might have some problems with the downstream. The powers levels are spot on but if I remember correctly your snr should be 33+ and those 24's defo look too low. That was a few years ago though and it might have changed with all the upgrades they are doing and the new kit/technology going in.

Edit: interestingly, there is a direct correlation between the channel frequency and the snr (the lowest frequency has the lowest snr and it goes up incrementally and the highest frequency has the highest snr). I don't know how it all works so it might be a coincidence that due to the channels you are on (my bonding group is in the 130's) that you don't need a high snr. I have just had a look at mine and the majority of my channels are above 300mhz which is why the snr's are 36 and 37.

[jb66]

still looks like a loose fittng somewhere. maybe splitter or isolator

[General Maximus]

am I right about the correlation between low frequency and low snr or should they be higher?

Originally Posted by jb66

still looks like a loose fittng somewhere. maybe splitter or isolator

That's my working theory at the moment. Finally got VM to send someone around because I suspect the problem might be with the wiring elsewhere. I just can't see where anymore force can be applied to connect things up.

I have removed that little component I linked to above. Maybe I should try reattaching it?

[thenry]

leave it off but show the engineer when he/she comes round. Having said that I hope he/she doesn't just drive off after seeing you have removed a fault. jb66 mentions loose fittings elsewhere so have the engineer check your whole connection.