Wireless Router onboard a modern Ship

Dear all,

We have a ship with a communication computer in the Bridge (Wheel
House) and need to connect the Captain's office directly to that
computer as it is not part of the LAN network.

There is of course a possibility to use wires but that is not what we
are thinking of now as the Master office is two deck levels below the
Bridge.

The question is: how wireless signal would behave inside a ship (steel
structure) accomedation and will there be some interference with other
communcations equipments such as Walki-Talkis, SatCom, VHF etc. ?

Thanks

-aljuhani

aljuhani wrote:
> Dear all,
>
> We have a ship with a communication computer in the Bridge (Wheel
> House) and need to connect the Captain's office directly to that
> computer as it is not part of the LAN network.
>
> There is of course a possibility to use wires but that is not what we
> are thinking of now as the Master office is two deck levels below the
> Bridge.
>
> The question is: how wireless signal would behave inside a ship (steel
> structure) accomedation and will there be some interference with other
> communcations equipments such as Walki-Talkis, SatCom, VHF etc. ?
>
> Thanks
>
> -aljuhani
>
Run copper ,

aljuhani wrote:
> Dear all,
>
> We have a ship with a communication computer in the Bridge (Wheel
> House) and need to connect the Captain's office directly to that
> computer as it is not part of the LAN network.
>
> There is of course a possibility to use wires but that is not what we
> are thinking of now as the Master office is two deck levels below the
> Bridge.
>
> The question is: how wireless signal would behave inside a ship (steel
> structure) accomedation and will there be some interference with other
> communcations equipments such as Walki-Talkis, SatCom, VHF etc. ?
>
> Thanks
>
> -aljuhani

Forget wireless, doesn't work inside a steel box... The usual is to run a
network over power lines (they are already run)...

On 22 Nov 2005 07:01:20 -0800, "aljuhani" <(E-Mail Removed)>
wrote:

>We have a ship with a communication computer in the Bridge (Wheel
>House) and need to connect the Captain's office directly to that
>computer as it is not part of the LAN network.

Oh-oh.

>There is of course a possibility to use wires but that is not what we
>are thinking of now as the Master office is two deck levels below the
>Bridge.
>
>The question is: how wireless signal would behave inside a ship (steel
>structure) accomedation and will there be some interference with other
>communcations equipments such as Walki-Talkis, SatCom, VHF etc. ?

The steel vessel will act as a solid barrier to 2.4Ghz. RF will not
penetrate in any way. If you find that there is a path by bouncing
around the stair wells, it will not be reliable and stable. Even if
you arrange a direct shot, the reflections from the bulkheads will
cause multipath problems. I would strongly suggest you run the
appropriate cables.

As for interefernce, it will not come from the 2.4Ghz signal. It will
be the usual clock oscillators radiating to the HF or to the VHF on
harmonics. They're low power and no worse than clocks, calculators,
or fax machines that radiate RF. The only way to determine if there
will be a problem is to try it. The good news is that you probably
won't have any interference from other 2.4GHz systems while at sea,
but will probably find it useless in port as everyone seems to be
using 2.4Ghz wireless to get internet access from the dock to the
shore.

--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Jeff Liebermann wrote:
> On 22 Nov 2005 07:01:20 -0800, "aljuhani" <(E-Mail Removed)>
> wrote:
>
> >We have a ship with a communication computer in the Bridge (Wheel
> >House) and need to connect the Captain's office directly to that
> >computer as it is not part of the LAN network.
>
> Oh-oh.
>
> >There is of course a possibility to use wires but that is not what we
> >are thinking of now as the Master office is two deck levels below the
> >Bridge.
> >
> >The question is: how wireless signal would behave inside a ship (steel
> >structure) accomedation and will there be some interference with other
> >communcations equipments such as Walki-Talkis, SatCom, VHF etc. ?
>
> The steel vessel will act as a solid barrier to 2.4Ghz. RF will not
> penetrate in any way. If you find that there is a path by bouncing
> around the stair wells, it will not be reliable and stable. Even if
> you arrange a direct shot, the reflections from the bulkheads will
> cause multipath problems. I would strongly suggest you run the
> appropriate cables.
>
> As for interefernce, it will not come from the 2.4Ghz signal. It will
> be the usual clock oscillators radiating to the HF or to the VHF on
> harmonics. They're low power and no worse than clocks, calculators,
> or fax machines that radiate RF. The only way to determine if there
> will be a problem is to try it. The good news is that you probably
> won't have any interference from other 2.4GHz systems while at sea,
> but will probably find it useless in port as everyone seems to be
> using 2.4Ghz wireless to get internet access from the dock to the
> shore.
>

Thank you to all and to Jeff, I knew I will be getting a detailed
answer from
Jeff as always thanks.

Well the idea just came up in trying to find a quick solution but now I
guess will
have to go for wired connection.

regards

-aljuhani