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Long ethernet cable run

by Cowshedman / October 11, 2011 4:59 AM PDT

Hi there,

New to this so would appreciate so guidance. I have a satellite broadband set up in my house. However, I need to run an ethernet cable from my modem/router to another building on my property that is c.200m away (because it's way too far for wi-fi and there is a field in between the 2 properties).

In this other property I would like to connect the cable to another wireless router so I can use my laptop wirelessly.

Firstly, is this even possible?

Secondly, I have read that standard RJ-45 ethernet has a max working length of 100m. Is there anyway around this by using higher grade cable?

Any advice would be very much appreciated.

Thank you

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All Answers

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See if google can help
by Steven Haninger / October 11, 2011 5:36 AM PDT

search for "ethernet extenders". You'll find plenty of them. A higher grade of cable isn't going to be enough. You'll also need a grade fit for that use. I'd try not to expose it to lightning so you may have to bury it.

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Ethernet extenders
by Cowshedman / October 11, 2011 3:28 PM PDT
In reply to: See if google can help

The problem is that these extenders seems to need power. Is there anyway of simply running a very long ethernet type cable with the standard connections at each end. I have read that certain types of cable have a longer range but have no idea if these have the same type of connection as standard ethernet.

I guess I can't use any sort of wireless signal booster (as I have wifi in the house) as there would be no place to power the extender from in the middle of a field.


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Don't need power in the middle of the field
by Steven Haninger / October 11, 2011 8:43 PM PDT
In reply to: Ethernet extenders

You need power in the main building and power in the remote building. I presume the remote building has AC power as you'd need that for your computer hardware. While I've never had need to set one of these up, I know that some use RJ-11 (telephone cable) between the extender boxes. The extender boxes must buffer/convert the signal in some way...perhaps do analog conversion but I don't know. It's a transmitter/receiver system that doesn't have the 100m limit of ethernet. I suppose, for bigger bucks, you could do fiber but I imagine the cost would be out of your range. Either way you're going to need to protect the cable over that distance and my guess is the majority of your cost would be in that part of your project.

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Also found plenty using POE
by Steven Haninger / October 11, 2011 10:40 PM PDT

Looks like that should work but I've no experience with running cable past the 100m limit so cannot recommend brands.

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Cable differences, check link
by Willy / October 11, 2011 11:46 PM PDT

As for cables, using "high quality" actual cable make-up does make a difference, Cat-5e rated. The connector ends remain the same. However, at 100M runs to the open environment, you need to verify for outdoor use as well, though it may not seemly look that way. Plus, if you run along existing wiring, it may pick-up inductance or interference from other electrical sources. You can still look into wifi setup using "uni-directional antenna". Here any signal strength is radiated in one directional path to best use its signal and practically making a P2P setup.

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