[MLB-WIRELESS] I'm ready to make 4 points in Camberwell happen

[Me]

Hi David,

I was there in November. I guess I didn't make enough noise.

The nodes are all in a line with about a 5 degree arc except for node 1.

Node 1 = 900m north of node 2.

Node 2 to 4 are in a straight line travelling SE from Kew down to Hartwell
with node 3 in the middle in Camberwell (top of the hill).

Now, node 2 may in fact have to be the in-between if node 1/2 can't see node
4. Rob Clarke suggested a 360 degree waveguide at node 3 if this was the
case.

I'm not 100% LOS exists between 1/2 and 4. I'm 80% sure it exists between
1/2 and 3 and between 3 and 4. I need a GPS with altitude!

I'll try and get there tonight.

Guy






On 11/2/05 2:11 AM, "David Ashburner" <d_ashburner at hotmail.com> wrote:

> 
> 
> You are almost there,
> 
> Didn't see you at the meeting in November, come to the one tonight and say
> "Hey I'm the dude  who want's to put 4 nodes in Camberwell" - you will get
> all the help you need
> 
> see comments in-line
> 
> cheers,
> dna
> 
>> Here are the nodes with suggestions / thoughts to date:
>> 
>> Node 1: Church where I put an antenna on the spire. Central Server to be
>> stored at Church for other nodes to access.
>> Antenna: 24 dBi Grid antenna pointing to node 2, 3, and 4
>> AP: Linksys WRT54
>> Cable: 15m LDF450, 20m POE
>> 
> 
> If Node 1 is where your server equipment is located and all other nodes need
> to connect to it and they have LOS, then this is where you would be using
> the Omni. This Node runs as an AP while the other nodes run in client mode.
> 
> wow, great if you can get something on a church spire. where is this? This
> is probably the point that other MW nodes could connect to / relay through.
> 
>> Node 2: Two story house 900m from Node 1.
>> Antenna: Superpass 8 dBi omni pointing to node 1
>> Cable: 3m antenna cable, 10m POE
>> 
> put the 15 dBi grid at this node pointing to node 1
> 
>> Node 3: Two story house right on top of the Burke Road Hill in Camberwell,
>> 2.5km from Node 2.
>> Antenna: 15 dBi Grid antenna
>> AP: Linksys WRT54
>> Cable: 5m antenna cable, 10m POE
>> 
> Put the other 24 dBi antenna at this node pointing to node 1
> 
>> Node 4: Two story house on top of a hill but possible there's a hill
>> between
>> it and Node 3. About 3.5km from Node 3.
>> Antenna: 24 dBi Grid antenna
>> AP: Linksys WRT54
>> Cable: 5m antenna cable, 10m POE
>> 
>> All nodes are in a line and I need node 1 to point to all other nodes. So
>> node one in my opinion needs to be high and powerful, same with node 4.
>> 
> 
> Hmm, haven't seen your diagram but when you say all nodes have LOS do you
> mean to node 1 or to the next node in your "chain"?
> 
> You want this:
> 
> Node 1 Omni  / AP  ---------- Node 2 15 dBi grid / client
>       |       |
>       |        ----------------------- Node 3 24 dBi grid / client
>       |
>        --------------------------------Node 4 24 dBi grid / client
> 
> 
> not this:
> 
> Node 1 ----- Node 2 ------- Node 3 ------- Node 4
> 
> The problem with the second is that with your grid antennas each node is
> focused one way and the beam is pretty narrow. Also I don't think you would
> really want each node relaying packets to node 1 if you could get them there
> in one hop.
> 
> 
> 
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