Improving Comcast modem signal


Our internet service is Xfinity/Comcast or Verizon. Currently I have Comcast service and use their modem because I had trouble with Netgear modem compatibility with Comcast. The problem is that the Comcast modem doesn’t allow LPS. I don’t know about the Verizon modem. So, for people with modem tweaking experience, any suggestions that will make a notable improvement?

The modem is connected via house Ethernet cable to EtherRegen in my listening room, which is connected to Lumin X1 streamer via fiber optic listening room.

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skso, you have any problem with noise and the power supply to your Comcast modem? Everyone I get I have to tinker with to get rid of the GL issues.

Mine are quiet as a mouse now. I put a brick on mine too with a dampening mat between them too.

"And the beat goes on"

"Shooting yourself is preferable to going to the "store" around here." Where on earth do you live? I use to visit El Pueblo in Pittsburg CA. One way in and no way out if you got in trouble.. I'm a blue eyed Anglo! I never had a problem.

Same when I use to work the fields with the locals cutting asparagus, dabbing corn, hoeing tomatoes, picking cherries, cotts and the packing sheds. Late 60s I got along because I worked and paid attention. I kept my mouth shut. I still carry a straight razor.

As for guns they just don't scare me, never have. I do respect them.  A pickup truck is a lot more convincing. I've chased a few through the city park.. My dog loves it..

Pickup truck and a Mauri War Club.. I put on Gaelic War paint there can be a problem.. "fag un benlach" Clear the way.

Regards

LPS = Linear Power Supply

GL eliminator. = Ground Loop eliminator. 12.00 dollars US.

Always with hangover attitude. Old Bear with a sore head. fuzztone

Nonoise I expect it.. 

That's right..

Time to feed the chickens

Regards

I'm also a Comcast/Xfinity user and use their modem. Every 18-24 months I get their latest and fastest modem. Over the years it has become very easy to update one, the newest ones even update all your passwords on your smart devices like thermostats and TV's. In the old days you would have to go to each device and reenter the WIFI network and password. Also use their "POD" with the Ethernet connections for streaming via my Bricasti M12. Simple and reliable and no dropouts. 

I am a Comcast Xfinity user as well. I did not know it is an option to substitute out their suppied cable modem and wifi router. I would love to get rid of that thing and not pay the monthly fee. The wifi is weak on that unit, and they told me I have theoir best one.  I often have to reset it, unplug and replug, at high traffic times.

I recently went through an install of xfinity/comcast.

They provided the xFi modem/router. It worked fine, but had a few drawbacks. First, $14 a month ($168 a year). Second, it’s WIFI coverage wasn’t very good. Third, their firmware does not let you override the router’s default DNS address, which for me, is a big problem as I use a piHole ad-blocker.

I guess another drawback is that it has an integral power supply, and you cannot substitute your own. FWIW, I am very skeptical that a LPS would make any difference whatsoever. Not trying to start a fight, but an LPS will not change the delivery of bits to their destination. If you’re one that is convinced that electronic noise from your network is a problem, you’ve already isolated your streamer/dac from that with the ReGen and fiber optic.

I returned the xFi and bought a Netgear modem and router (separates!). At first I wasn’t getting the speed with the new setup that I was previously, but phone call to to xfinity solved that. Their very competent and pleasant phone tech said that it was very common for customers to replace their modem/routers.

Easy to use a non rented modem. Unlike fuzzytone’s experience everyone I know who has swapped rental modem out has never gone back. Maybe 10 people so just shows how a small sample size is problematic. 
 

Modem compatibility is easily verified on Comcast website or even Amazon. I currently own a Motorola MB8611 and am on Xfinity ie Comcast cable. Much easier to swap out and get working than before. All done online via their app. Oh, don’t buy a refurb as often those MAC addresses show as still in use and are a real pain to get authorized. 

@mitch2 I tried Netgear modem with my Comcast system and I could not get my internet to work. So, I had to go back to the Comcast modem. May be the gigabyte capacity of Netgear conflicted with Comcast?

Good for youse. Risk taking is what life is all about.

If they have a "range" it is not user selectable. You get whatever is on the truck. Shooting yourself is preferable to going to the "store" around here.

Taking theirs off the bill entails that. The last time I went it was locked up with the door sign stating open while I waited in the car watching too many chumps attempting entry. Go away suckers.

The last time I wanted them to send something (cheap ass TV boxes fail often) they wanted me to pay shipping. ?????

It must be cheaper to send a tech out.

The rentals equal out the cost of a new ARRIS SURFboard SB8200 in about 10 months.  After that, your modem costs are free. In 16 years, I have purchased 4 new modems (always for purposes of updating) and had zero issues.  Figure an average of a year of rental fees to pay off each of the four modems, and the result has been 10 years without the $14/mo fee, a savings of $1,680

People who live in areas that are susceptible to having problems can always add the additional service fee to pay less for visits.  One caveat is that your self-purchased modem needs to be on their current/approved list, i.e., it cannot be outdated.

That has not been my experience. I’ve used Netgear cable modems with Comcast for many years. I’ve had no issues (one did fail after a few years’ service) and Comcast has corrected its various network issues multiple times without blaming the modem even once.

Sure you can buy your own. Every person I know of that has done that has reverted. When the signal fails (too often) they always blame you and want to bill you for a visit. Who ya crappin’?

I’ve owned in the old analog days, not now no way.

I've had them upgrade mine for the cost of buying one.

You don't have to rent xfinity's xFi Gateway modem, which appears to have its own internal PS.  You can buy your own and quit paying the monthly rental fee.

I use an ARRIS SURFboard modem (not the latest version) that has an external DC power supply, as do many other available modems made by folks like MOTOROLA and NETGEAR.  By purchasing your own modem, you could then use whatever LPS you want.

When looking at the newer modems, I noticed the ARRIS SURFboard SB8200, a  DOCSIS 3.1 Gigabit Cable Modem, also provides dual Gigabit Ethernet ports.  I will be curious to hear from people who know more than I do whether using the second Ethernet port to send a direct signal to my audio server, separate from the rest of my network, would further isolate the server from noise on the network or whether using an Ethernet cable out of my router to a switch offers the same level of isolation - i.e., is there any benefit to having/using a second Ethernet output from the modem?

What in the name of Ceaser’s (the ape’s) ghost is a 12.00 GL eliminator?

It sounds like a dirty dozen laxative.

Fiber optic listening room? Another ghostly puzzle.

LPS? Linear Power Supply?

Are you loosing packets? If your not dropping the signal, not loosing packets, what is it your looking for?

I went from Cat 5 to Cat 8 that was an eye opener. I use Comcast and their router with the noisy power supply. I did fix their problem they couldn’t.

12.00 GL eliminator.