Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

2 posts

Wannabe Geek

#152075 15-Sep-2014 11:55
Send private message

Hi guys, straight to the point. Is Cat5 capable in running at least 30mbps?

I'm currently running: fibre modem (wifi disabled), running through 30m Cat5 cable to a wireless router, I seemed to have a drop in speed, from 27mbps to around 19mbps after installing the Ethernet cable. (checked through

Is this due to the limitations of Cat5? I have done a few readings about it and apparently Cat5 is capable of up to 100mbps. Unless cheap quality cables are just dead horrible. Any suggestions would be much appreciated.

Kind Regards

Create new topic
2815 posts

Uber Geek

Lifetime subscriber

  #1128943 15-Sep-2014 11:59
Send private message

I don't think it's likely to be the Cat5 cable unless is it very badly kinked.  Can you bypass this cable and test directly at the router with a laptop connected via cable?

"4 wheels move the body.  2 wheels move the soul."

“Don't believe anything you read on the net. Except this. Well, including this, I suppose.” Douglas Adams

7664 posts

Uber Geek


  #1128956 15-Sep-2014 12:09
Send private message

Hi, Cat5 is rated to 100Mb/s to a full 100m, it will also do GigE to around 60m depending on the actual cable build/manufacture. It is possible to get GigE out to the full 100Mb/s but all depends on the build quality. Cat5e was devised as a standard to provide higher headroom to ensure GigE to a full 100meters, to achieve this there was an increase in twist rate to assist with crosstalk and a reduction in twist splay to reduce timing skew which is important for GigE where there are two channels in each direction, if the timing between the two channels in a direction diverge too much then the two channels cannot be re interleaved back together without errrors.

Regardless cat5 will provide full 100Mb/s 10/100 Fast Ethernet operation to the full 100m channel length.



1558 posts

Uber Geek


  #1128961 15-Sep-2014 12:13
Send private message

Have you also unplugged the wireless access point and connected the laptop to the Cat5 cable at that point?  That would rule out any wi-fi issues.

2 posts

Wannabe Geek

  #1129633 16-Sep-2014 09:10
Send private message

Thanks for the input! I tried using another device and I found that the culprit was my phone (S5), for some reason it had decreased in speed via speedtest on phone, but speeds still remain the same on laptops. Unfortunately I had to take down the 30m cabling around the house as gf's mum isn't happy with how it looks around despite me explaining i will have it cornered around the edges of the ceiling.... Might head off to Harvey Norman and get a 1300ac (hopefully powerful enough) to reach a small dead spot at the other end of the house.




Once again, thank you for the three of you for the help and knowledge. =)

24 posts


  #1130160 16-Sep-2014 18:30
Send private message

Might be worth looking at powerline adapters, I was able to use some cheap $80 a pair ones to get 50\60 Mbps at the far end of my old house. You could then use an old router as an AP at that end of the house.

Create new topic

News »

Freeview On Demand app launches on Sony Android TVs
Posted 6-Aug-2020 13:35

UFB hits more than one million connections
Posted 6-Aug-2020 09:42

D-Link A/NZ extends COVR Wi-Fi EasyMesh System series with new three-pack
Posted 4-Aug-2020 15:01

New Zealand software Rfider tracks coffee from Colombia all the way to New Zealand businesses
Posted 3-Aug-2020 10:35

Logitech G launches Pro X Wireless gaming headset
Posted 3-Aug-2020 10:21

Sony Alpha 7S III provides supreme imaging performance
Posted 3-Aug-2020 10:11

Sony introduces first CFexpress Type A memory card
Posted 3-Aug-2020 10:05

Marsello acquires Goody consolidating online and in-store marketing position
Posted 30-Jul-2020 16:26

Fonterra first major customer for Microsoft's New Zealand datacentre
Posted 30-Jul-2020 08:07

Everything we learnt at the IBM Cloud Forum 2020
Posted 29-Jul-2020 14:45

Dropbox launches native HelloSign workflow and data residency in Australia
Posted 29-Jul-2020 12:48

Spark launches 5G in Palmerston North
Posted 29-Jul-2020 09:50

Lenovo brings speed and smarter features to new 5G mobile gaming phone
Posted 28-Jul-2020 22:00

Withings raises $60 million to enable bridge between patients and healthcare
Posted 28-Jul-2020 21:51

QNAP integrates Catalyst Cloud Object Storage into Hybrid Backup solution
Posted 28-Jul-2020 21:40

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.