Visitor

 • 

4 Messages

Friday, September 26th, 2025

Coax amplifier issue

I've had some issues with slow upload speeds on my 2-gig plan, with downloads being fine at around 1900mbps but uploads only at 50 of the advertised 250mbps. After troubleshooting for a while, I think I've found a solution. In my network cabinet there is a coax amplifier rated for "5-42mhz" between the cable from the street to my modem, which is supposedly meant for sub-split speeds. Removing this and directly connecting Xfinity's XB7 modem to the street coax increases upload speeds to ~200mbps, but causes some other odd issues. I believe replacing it with an amplifier rated for "82mhz" mid-split speeds (whatever that means) will fix my issues. The only thing is, I can't find any for sale. Do I need an Xfinity technician to take a look at this? Have I totally misinterpreted my issue and solution? 

Oldest First
Selected Oldest First

Expert

 • 

114K Messages

24 days ago

Visitor

 • 

4 Messages

Thank you, I've read the whole thread. It was quite informative. I've found a "MRAM1-15-G2 Residential Amplifier" with "midsplit" and "8-85mhz" printed on it.

It looks similar to the one I currently have (rated for sub-split speeds) and is on sale on ebay for $35 with shipping. If this is correct, it'd be a pretty cheap and really simple solution to my problem. Does it look right? 

Expert

 • 

114K Messages

23 days ago

Official Employee

 • 

285 Messages

23 days ago

Good morning @user_jeh75g, thanks for visiting us on the Xfinity forums, and thank you @EG for providing the link to the other forum post, I hope you are having a good day so far! As someone that works from home and has to do a lot of video meetings online, I know how important good upload can be, so I understand the frustration that your download is fine, but the upload is low. You have reached the right team that can take a look for you. I noticed in the conversation that you mentioned purchasing an amplifier on eBay, and I was wondering if you had received it yet?

forum icon

New to the Community?

Start Here