what does cable resistance & attenuation mean on 192.168.100.1

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computer1949

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Posted 9 months ago

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computer1949

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I didn't know if that would affect my internet connection Speed because I extended my coax cable. With an adapter for extra coax cable because it didn't reach modem where I wanted it. I could get less cable Ft if it would help internet connection Speed.
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computer1949

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After I got 25 Mbps it seems extra coax cable I added ... I got slower
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Bev, Champion

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What are your numbers. Resistance should be between 1 and 3 Ohms, 1-2 being ideal. Attenuation is fin up to around 6 db but, lower is better, like near 2 db. Don't want zeros on either but low is good. More important is your SNR, above 6 and the closer to 10 the better. At around 2 or lower, you loose service.
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lsandersj

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Good to know - thx.  Looking for Viasat to provide min levels but can't find.  My attenuation hovers around 15db most of time but SR 8.5 and resist 1.5 ohms.  Only a two month old installation and wonder if there is a problem in the cable and would I get noticeably better performance if attenuation was a lot lower?
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Steve Frederick, Champion

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It may be that high if you have a long coax run between your modem and dish.
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Jim16

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Just been looking at my modem specs and the the Cable Attenuation jumps back and forth from 0 to 7+ .  Never noticed that before. 


(Edited)
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computer1949

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Screenshot included.... I have an 50 ft coax cable extension for extra length for mondem if I would remove 50 ft coax cable would it speed up my internet connection or more reliable connection I could remove 50 ft of coax cable would that help
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computer1949

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computer1949

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Would getting rid of 50 ft coax cable extension help internet speed connection and overall better service
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Mr.Anderson

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yes, and how long was the cable to begin with, and was it installed by exede or just a cable that already happened to be there.  Are all of the connections secure? and grounded... Just for interest what do your tria numbers look like

My installer saw a cable already there and was going to use that. I stopped him and politely asked if he would mind running a new line for me.  He was happy to, even if it meant crawling under the house :)
(Edited)
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computer1949

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I can get 50 ft less coax cable if that would help
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VeteranSatUser, Champion

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That resistance is too high. Needs to be 3 or less. And you shouldn't randomly be adding your own cable. That could definitely impact your systems performance. It might not even be cable certified for use with Exede.
(Edited)
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computer1949

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It is RG6 cable
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VeteranSatUser, Champion

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Just because it is RG6 cable doesn't mean it is certified to work with Exede. Exede has very strict specs on what kind of cable can be used with it. To deviate from those specs can definitely cause system performance issues.
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Bev, Champion

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SNR as close to 10 as possible, some areas cannot get above 6 but, never below 5. at 2 or lower, you are looking at intermittent or no connectivity.

Resistance 3 or lower but, not zereo, mine is a bit high but, it works perfectly and, is accounted for by the setup.

Attenuation, according to my favorite technician, 20 or lower, but not zero.
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computer1949

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computer1949

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Do those numbers look better???
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Bev, Champion

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There you go, looks great now. :)
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VeteranSatUser, Champion

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You can't be sticking random cables between the tria and modem or you will have issues :)
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Matt B, Viasat Employee

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computer1949,

Pretty much what everyone else has said.  Adding the coax is probably what caused the resistance to go up, especially if it's not the approved, high frequency cable (the same is true with connectors, and barrel connectors).  Also, if your cable run, from the modem to the dish, is over 150ft (or even near it, really) you'll start to see decreased speed, higher resistance, etc.  
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Jordan Bautista

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I’m getting very slow connection. Like under 1 mbps up and down. Can anyone help me diagnose the problem?
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Matt B, Viasat Employee

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Not related to really old thread.

Please reference the new conversation here: Speed Troubleshooting

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