We have done fiber to ethernet converters on FM towers. The telephone
option you spoke of earlier was most likely DC powered which would be much
more isolation.
We do 1 FM tower where 100 meg ethernet would not link. Had to have
power to power the ethernet to Fiber converter at top but it allowed for 100
meg transmission up the tower.
Justin
--
Justin Wilson <[email protected]>
CCNA CCNT Mikrotik Advanced
http://j2sw.mtin.net/blog
From: Greg Ihnen <[email protected]>
Reply-To: WISPA General List <[email protected]>
Date: Sun, 14 Mar 2010 22:35:18 -0430
To: WISPA General List <[email protected]>
Subject: Re: [WISPA] Optoisolator for Ethernet?
That sounds expensive. I wonder if that would help in where there's rf
problems like at high power broadcast colo's
Greg
On Mar 14, 2010, at 10:11 PM, Philip Dorr wrote:
> We use two fiber transceivers and a jumper on our ethernet when we
> want to have electrical isolation.
>
> On Sun, Mar 14, 2010 at 6:30 PM, Greg Ihnen <[email protected]> wrote:
>> I've seen a telephone (copper pair) optoisolator which had a short piece of
fiberoptic cable inside. Each circuit on both sides of the cable had their own
highly isolated power supplies. This was the only thing that worked in the
Amazon region to stop phone equipment from getting wiped out during the intense
electrical storms. The beauty of this device was it didn't require a first class
ground system to work, in fact it didn't require any ground. A ground would just
present up a difference in potential between the phone line and ground and
encourage destruction. The telco side of this thing would just float at what
ever potential the telco's lines were presenting and the on site equipment on
the other side of this thing never saw that potential. Has anyone seen such a
thing for Ethernet?
>>
>> Greg
>>
>>
>>
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>
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