CuriousJ's profile

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68 Messages

Tuesday, December 5th, 2023 8:49 PM

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Netgear modem/router combo questions

Netgear Nighthawk C78000 to be specific. Purchased June 2021 and suddenly won’t keep a steady internet connection. It keeps cutting in and out. Unplugging sometimes helps but not always. Cox says everything looks good on their end and is blaming the Netgear. I do have a Cox-installed splitter that I’m unable to disconnect and they think it could also be a splitter problem. Tech coming out tomorrow. In the event that the splitter is not the problem, any recommendations? Is it normal for a Netgear to only last 2.5 years? What does a splitter even do? If I’m forced to buy new equipment what Cox-compatible combo units are recommended? A lot of questions, so thanks in advance!

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155 Messages

2 years ago

Hello CuriousJ, 

I am glad to hear that you have a service call set up to look into the internet trouble that you have been experiencing. I can imagine how challenging it would be for the internet to go in and out. Truthfully, Gateways can be bad coming straight from the manufacturer. That is why there is normally a 1-2 year warranty. But this is not typical at all. The splitter is used when you have multiple devices that need to connect to the coaxial outlet, but you do not have enough outlets for your equipment or they are located too far away. Basically, it allows 2 or more devices to connect to one coaxial outlet. They can degrade signal and this is why it is typical in troubleshooting to ask that it is bypassed. If you are renting a gateway from us, we can replace it at no cost. If you are looking to purchase a new one, you can see compatible modems using this link. https://www.cox.com/residential/support/cox-certified-cable-modems.html You would want to ensure that the modem listed is compatible with your current level of service. I actually recommend at least one tier higher unless you are already on the highest internet plan. This is because since I started working for Cox over 16 years ago,  we have increased internet speeds numerous times. If you got one today that is compatible with your current speeds, it may not be compatible anymore if we do increase speeds again soon. I hope this helps answer your questions. Please let us know if you need any additional assistance. 

Esteemed Contributor III

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3.5K Messages

2 years ago

Can you post your signal levels? See page 22 of manual on instructions.

Contributor

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68 Messages

Thanks for attaching the instruction link, I would not have had a clue!

Esteemed Contributor III

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3.5K Messages

You figured out how to attach a picture which is good, but it's the wrong screenshot. The instructions say Basic > Cable Connection. You are on the advanced tab.

Contributor

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68 Messages

Sorry, I was on p. 24. 🤪

 

Esteemed Contributor III

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3.5K Messages

Your signal levels are low. Should be between -5 and +5db. What are they without the splitter? Also what kind of splitter?

Esteemed Contributor III

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3.5K Messages

BTW, a splitter splits the coaxial signal from Cox so you can use it to connect your modem and your TV boxes. If you have a lot of TV boxes and they aren't wireless, it is better to split the signal with one two way splitter, connect one end to the modem and the other to a second splitter for as many outlets as you have TV boxes. If your signal levels are still low without the splitter, I suggest a technician. If they are good without the splitter, probably a bad splitter and suggest replacing it.

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