Roger,

        I'm taking this back on list because there's guys with way more 
experience than me. I'd feel better if you get their input too.

        I hope taking a conversation off list and then back on isn't a forum 
no-no. If it is I'm sorry.

        I'm not sure what your friend is thinking but it sounds like a recipe 
for disaster.

What's much better is this:

                        Interior side of wall                                   
                        Exterior side of wall
2.4GHz AP-------Ethernet cable--------/cement wall/-------Ethernet 
cable-------5.8GHz link to the rest of the network


if you can't do that do this:

2.4GHz AP on channel 1----Ethernet cable---/cement wall/------2.4GHz AP on 
channel 6 or 11 with WDS to other APs

        I run a small network that originally started with cheap 3Com, Linksys, 
DLink etc APs on different channels, located in pairs wired back to back. It 
worked really poorly. I'm not sure I'd want to even say "it worked".

        Next was Buffalo APs using WDS. That was OK but still cruddy. It worked 
but not much more than that. Email connections often timed out, Skype worked 
poorly, etc.

        Next came UBNT gear using WDS. That was better yet but still not 
adequate in my opinion.

        Finally UBNT APs fed by a 5.8GHz UBNT backhaul. Now it works as a 
network should. I would call this the bare minimum that I'd want to put my name 
on and call it a network.

        UBNT gear is cheap and if you don't cut corners you'll have a network 
that people won't constantly be complaining about. You'll have a network that 
you won't quickly outgrow. I think the complaining part is the worst. That's 
priceless.

Greg


On Apr 29, 2011, at 9:02 AM, Roger E. Rustad, Jr. wrote:

> Well, in his case, one antenna will be on one side of a wall and the other 
> antenna will be on the other.  The walls will be WiFi unfriendly concrete.  :/
> 
> Yeah, I'm guessing that he will likely have impedance mismatch here, and not 
> sure what he can really get on a budget....
> 
> Rog
> 
> On Fri, Apr 29, 2011 at 1:59 PM, Greg Ihnen <os10ru...@gmail.com> wrote:
> Well the 3db "loss" really isn't. 3db is half. Since you're splitting it, 
> it's halved, but you get both halves. If you cut your sandwich in half and 
> keep both halves you haven't lost anything.
> 
> But, unless he's getting fancy with feed line lengths and impedances he'll 
> have a mismatch (swr) and that will cause loss and possibly other problems.
> 
> There are devices that will give you the "T" and maintain your 50Ohm 
> impedance. Those devices do have some inherent loss, but they're usually the 
> better way to go.
> 
> Greg
> 
> On Apr 29, 2011, at 6:04 AM, Roger E. Rustad, Jr. wrote:
> 
>> In this case, a friend has some cheap radios (Meraki, Ubiquiti, etc) that he 
>> wants to split and attach two different antennas to.
>> 
>> He's trying to get some with strong gains, given the fact that he'll lose 
>> 3dBi with each split.
>> 
>> On Fri, Apr 29, 2011 at 1:07 PM, Greg Ihnen <os10ru...@gmail.com> wrote:
>> Do you mean a simple T connector or do you mean a hybrid/combiner that 
>> handles impedance matching?
>> 
>> What are you going to connect?
>> 
>> Greg
>> On Apr 29, 2011, at 3:00 AM, Rogelio wrote:
>> 
>> > I am looking for an extremely inexpensive n connector splitter to use
>> > on several wireless projects here in Africa.
>> >
>> > Does anyone have any good suggestions?  Since this is a rural area,
>> > price point is key here.
>> >
>> >
>> > --
>> > Also on LinkedIn?  Feel free to connect if you too are an open
>> > networker: scubac...@gmail.com
>> >
>> >
>> > --------------------------------------------------------------------------------
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> 
> 


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