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Author Topic: Magnetic field interference in network cables...  (Read 2170 times)

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Offline JoseTopic starter

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Magnetic field interference in network cables...
« on: January 14, 2009, 09:05:53 PM »
So I bought this Cat5e spec cable and a small tube type of thing to pass it through a wall, and the seller who happens to be a electritian (if that's how you call it in english) was bugging me that the magnetic field of the nearby power cables (220v) will interfere. Is this true ? Well in my case the nearby cable is actually 36v for my satellite dish actuator ;) but I'd still like to know if there will be interference and signal loss (don't think both are the same since signals in the network cable are digital so as long as it's enouph to transfer the info there's no problem...).

This also got me thinking about those POE (power over ethernet) adpters. If there was so much interference these wouldn't be possible as the supplied voltage (12v for the router in most cases I think) would cause interference and even if the voltage is lower the cables are really close in that case.

Was also told I should leave 25cm between cables even if it's just a TV cable cause different frequencies might interfere. Think it's crap cause the voltage and hence magnetic fields in TV cables is probably minimal.

STILL, would like to hear you electronic / network gurus on this one.

:pint:
\\"We made Amiga, they {bleep}ed it up\\"
 

Offline JoseTopic starter

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Re: Magnetic field interference in network cables...
« Reply #1 on: January 14, 2009, 11:50:36 PM »
Well, I don't think I'll make two holes on the wall just because of that, I've tested it and there seems to be no interference though I don't have any base to compare, but as it is it's enouph for me.

Cheers
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\\"We made Amiga, they {bleep}ed it up\\"
 

Offline JoseTopic starter

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Re: Magnetic field interference in network cables...
« Reply #2 on: January 23, 2009, 03:59:56 AM »
@Homer

I looked into Disec stuff and opted for polar mount as the Diseq motors are too weak in general and most sat receivers have a PSU which is not able to run the big ones anyway, without risk of burning if you move the dish around too much like I do sometimes. Besides I want to get a bigger dish later and Diseq won't allow me to do that.

On the other hand, diseq aligns to satellites very well as long as south alignment is ok. Polar mount is living hell! Maybe I'm a perfectionist but I still haven't managed to align it to get the strongest possible signal on all sats.
\\"We made Amiga, they {bleep}ed it up\\"