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This is a sub-selection from [OOL] TM1602A - Internet slows down randomly. Signal check please!
ninjamaster
join:2014-10-21

ninjamaster

Member

2017-Aug-3 10:05 pm

Re: [OOL] TM1602A - Internet slows down randomly. Signal check please!

said by dbmaven:

Power #'s aren't good.
Start by working from the modem to the main connection point outside - tighten every one - with a wrench.
Once done re-check your power levels.
(I had a similar problem for about 2 weeks, and just tightening the connectors - which already seemed plenty tight -
brought my upstream levels from 54 [which was causing reboots] - to under 50 - and it's now stable).

If that doesn't work, call for a tech visit.

said by OptimumVoice:

Not locked on two downstream channels and the rest have borderline power levels. Its a coax/splitter issue most likely.

said by Anone9ca2 :

The Optimum Store will give you a splitter for free. (Antronix 1 GHz). How many splitters do you have between your coax input and the modem? What is the dB rating for the ports you're using? Ideally, you'd have one splitter with the modem on the 3.5 dB port.

Any connectors outside in the weather? They could be corroded.

Hi Guys Discovered some sloppy wiring outside. But I followed the cables inside to the garage. All the cables were tight but I tightened them a little more. The Cables come from outside into the house and go into a splitter. One heads upstairs (White Cable) and the other heads to the basement box (Black Cable). Once upstairs cable goes into a 3-way splitter. One goes to other rooms in house (I think not sure) , One goes to cable box in living room and the last one goes to mode. The modem is on the -3.5dB as you guys suspected. Before the cable gets to the modem it goes into another splitter. One goes to the modem and the other to a moca ethernet adapter. Using that to get wireless downstairs since Wi-Fi is bad in basement. I tightened all the connections and saw 2 missing downstreams came back and power signals went down a little. The 53 still worries me for upstream 2 but not sure what else I can do. For now speed is good but will keep an eye on it and let you guys know.
















Here are my new Signals after tightening everything. Is this OK ?


· actions · 2017-Aug-3 10:05 pm ·
NeedDaSpeed
join:2016-06-30
Trenton, NJ
1 edit

NeedDaSpeed

Member

2017-Aug-3 11:51 pm

So you have three splitters before the modem which gives you roughly 10.5 dB change in your signal. When you add splitters before the modem, it'll lower the downstream numbers and raise the upstream by whatever values your splitters add up to. Your signals are actually pretty good but with the way you connected everything you're making them bad. If you could connect your modem to the main line coming into the house your downstream would be right near 0 and your upstreams would be right around 41.

Furthermore, many of your cables are bent like crazy. Especially, that short little cable on the second 3-way splitter. There are specs of how much an RG6 should be bent and you're exceeding it. I'm not sure what those specs are off the top of my head but you're defiantly exceeding it.
· actions · 2017-Aug-3 11:51 pm ·

Anone9ca2
@optonline.net

Anone9ca2 to ninjamaster

Anon

2017-Aug-4 7:26 am

to ninjamaster
Your signals are still out of spec. Is it possible to move the modem so it's behind fewer splitters? You could do this in two ways:
1) Put the modem near the main coax line (in the basement?) and run Ethernet to your router. Ethernet can run 300 feet with no degradation.
2) Run a new coax line from the first splitter to your modem.
· actions · 2017-Aug-4 7:26 am ·
ninjamaster
join:2014-10-21

ninjamaster

Member

2017-Aug-4 8:40 am

said by Anone9ca2 :

Your signals are still out of spec. Is it possible to move the modem so it's behind fewer splitters? You could do this in two ways:
1) Put the modem near the main coax line (in the basement?) and run Ethernet to your router. Ethernet can run 300 feet with no degradation.
2) Run a new coax line from the first splitter to your modem.

Thanks for the solutions. Being we are on the second floor not sure how i could run the coax or Ethernet line. This has always been a pain for me to try and get any type of cable to the second floor ( with the install still looking clean). Will see if my dropout issue occurs again.
· actions · 2017-Aug-4 8:40 am ·
ninjamaster

ninjamaster to NeedDaSpeed

Member

2017-Aug-4 8:41 am

to NeedDaSpeed
said by NeedDaSpeed:

So you have three splitters before the modem which gives you roughly 10.5 dB change in your signal. When you add splitters before the modem, it'll lower the downstream numbers and raise the upstream by whatever values your splitters add up to. Your signals are actually pretty good but with the way you connected everything you're making them bad. If could connect your modem to the main line coming into the house your downstream would be right near 0 and your upstreams would be right around 41.

Furthermore, many of your cables are bent like crazy. Especially, that short little cable on the second 3-way splitter. There are specs of how much an RG6 should be bent and you're exceeding it. I'm not sure what those specs are off the top of my head but you're defiantly exceeding it.

I will see if i can buy shorter cables to get those short runs ironed out. I will have to see what options i have to get that cable to the modem without going through walls.
· actions · 2017-Aug-4 8:41 am ·

Anon98f9f
@2604:2000.x

Anon98f9f to ninjamaster

Anon

2017-Aug-4 3:18 pm

to ninjamaster
the bottom picture shows a satellite 2 way splitter. get a cable splitter like antronix brand. satellite splitters do not pass upstream frequencies properly. cable splitter are rated for 5-1000mhz. satellite splitter is 50-2500mhz.
· actions · 2017-Aug-4 3:18 pm ·
ninjamaster
join:2014-10-21

ninjamaster

Member

2017-Aug-5 10:51 am

said by Anon98f9f :

the bottom picture shows a satellite 2 way splitter. get a cable splitter like antronix brand. satellite splitters do not pass upstream frequencies properly. cable splitter are rated for 5-1000mhz. satellite splitter is 50-2500mhz.

ordered one. Thanks !
· actions · 2017-Aug-5 10:51 am ·

Anone9ca2
@optonline.net

Anone9ca2

Anon

2017-Aug-5 11:55 am

You can get a splitter for free at the Optimum Store.
· actions · 2017-Aug-5 11:55 am ·
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