|
Broadband-Hamnet™ Forum :: Hardware |
|
|
|
|
|
Subject :Multi-directional node implementation..
2011-12-18- 08:44:23
|
|
|
| KV4I |
|
| Member |
 |
Joined: 2011-12-17- 08:30:12
Posts: 51
Location: New Smyrna Beach, FL |
|
|
|
|
|
|
The MESH Visual at http://hsmm-mesh.org/visual-of-a-mesh-network.html shows each node is able to access two or more other nodes each in a different direction. How was this accomplished? Does each node have a single omnidirectional antenna? two directional antennae on one WRT54G? more than one WRT54G? Thanks for any insight you can offer. 73 Mark KV4I
|
IP Logged
|
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2011-12-18- 15:27:22
|
|
|
| K5KTF |
|
| Admin |
 |
Joined: 2010-01-18- 23:04:04
Posts: 266
Location: 5' from this webserver |
  
|
|
|
|
|
That picture is only an example of how things work.
The REAL node map is http://hsmm-mesh.org/googlemapped-mesh-nodes.html , where people have sent me their Lat/Lon and I added them.
My one node on a 40' pole has a 24dBi dish and a 12dBi omni, one to each port.
You can put any combo of antennae on, however you want. Could be 2 omnis, 2 directionals, a yagi and a dish, etc.
Whatever works for you.
73
K5KTF |
|
IP Logged
|
 Jim K5KTF EM10bm Cedar Park, TX  |
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2011-12-18- 15:34:18
|
|
|
| KV4I |
|
|
| Member |
|
Joined: 2011-12-17- 08:30:12
Posts: 51
Location: New Smyrna Beach, FL |
|
|
|
|
|
|
I see. I was kind of partial to a rootenna but I guess I'll have to use a different approach if I want to use more than one antenna. Thanks for clearing things up.
73 Mark KV4I |
|
IP Logged
|
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2011-12-18- 16:02:28
|
|
|
| K5KTF |
|
|
| Admin |
|
Joined: 2010-01-18- 23:04:04
Posts: 266
Location: 5' from this webserver |
|
|
|
|
|
|
You could use a rootenna, or 2, back to back, etc.
You would just need to run (high quality) coax from the rootenna that doesnt have the node inside.
Let us know what you come up with. We are always eager to hear how everyone actually uses HSMM-Mesh.
73
Jim
K5KTF |
|
IP Logged
|
|
Jim K5KTF EM10bm Cedar Park, TX |
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2011-12-18- 16:36:47
|
|
|
| KV4I |
|
|
| Member |
|
Joined: 2011-12-17- 08:30:12
Posts: 51
Location: New Smyrna Beach, FL |
|
|
|
|
|
|
Thanks, Jim. I just stumbled across an example of a rootenna coupled with an external omnidirectional antenna at http://www.n5oom.org/hsmm/rootenna_project.htm
So far, I've got my WRT54GL flashed with HSMM-MESH and now I'm trying to decide how I want to package everything. Since I need a weatherproof container anyway, the rootenna is appealing.
I'm a Ham and a retired MCSE so I've got networking experience and I really enjoy combining these two aspects of my life.
I've been discussing HSMM-MESH with some of our local ARES members and I'm hoping there will be enough interest to be able to put a mesh together locally.
I appreciate your help.
73 Mark KV4I |
|
IP Logged
|
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2011-12-18- 17:37:22
|
|
|
| K5KTF |
|
|
| Admin |
|
Joined: 2010-01-18- 23:04:04
Posts: 266
Location: 5' from this webserver |
|
|
|
|
|
|
Alot of times, we will use an Orbit exterior sprinkler controller box, which is about $25 at your local home improvement store. I have had one up on a 40' mast for over a year, and it still is in good shape. I will be bringing the node down soon for upgrades (replace the TV rotor it sits on, adding more mast to gain some height, etc), so I will be able to see how it has fared from the inside.
If you would like, I can add your node to our google map. Id just need the Lat Lon (in XX.XXXXXX format preferably), so that anyone else near you can see and try and connect. You can see a link to the map once you are logged in, at the bottom of the HSMM-MESH Info section of the menu to the left.
73 and GL!
Jim
K5KTF |
|
IP Logged
|
|
Jim K5KTF EM10bm Cedar Park, TX |
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2011-12-19- 02:12:31
|
|
|
| KV4I |
|
|
| Member |
|
Joined: 2011-12-17- 08:30:12
Posts: 51
Location: New Smyrna Beach, FL |
|
|
|
|
|
|
Jim,
Thanks for the tip about the Orbit. I'm still working out which antennae and packaging will best suit my needs so my node is in doors on a desk with stock antennae and powered off. After I get it up and running, I'll send you the coordinates for the node.
I'm curious about the TX power setting. HSMM-MESH shows my current WRT54GL ver 1.1 TX power setting at 19dBm (about 79 mw) which is the maximum option in the firmware. I've read that the hardware maximum is much higher. Does the firmware stop at 19 dBm because this is the optimum maximum for HSMM-MESH or is there some other reason why my set up is limited to 19?
Thanks for your help and 73,
Mark KV4I |
|
IP Logged
|
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2012-01-08- 14:51:20
|
|
|
| K4RJJ |
|
| Member |
|
Joined: 2011-01-08- 11:57:13
Posts: 31
Location: Dallas GA |
|
|
|
|
|
|
I'm curios about this as well. I have a Linksys WSB 824 amp. Will the firmware max be enough to drive this amp or will it overdrive it?
I had planned to do a 24db mesh on one side and a omni antenna on the other. Hoping the omni will help out locally and the dish will be the hop to the next one east towards Atlanta. Thanks! Ronny K4RJJ
|
|
IP Logged
|
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2013-03-12- 08:25:49
|
|
|
| W8PSA |
|
| Member |
|
Joined: 2013-01-29- 07:25:04
Posts: 3
Location: |
|
|
|
|
|
|
do you designate one as rx and the other tx or does the unit make the decision? That being said, a directional antenna would really restrict the ability to see nodes all around wouldn't it? |
|
IP Logged
|
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2013-03-12- 08:26:16
|
|
|
| W8PSA |
|
|
| Member |
|
Joined: 2013-01-29- 07:25:04
Posts: 3
Location: |
|
|
|
|
|
|
do you designate one as rx and the other tx or does the unit make the decision? That being said, a directional antenna would really restrict the ability to see nodes all around wouldn't it? |
|
IP Logged
|
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2013-03-12- 22:33:14
|
|
|
| wx5u |
|
| Member |
|
Joined: 2013-01-02- 00:30:45
Posts: 188
Location: Austin, TX |
|
|
|
|
|
|
Let the router decide. Separate transmit and receive is needed if you have a one way amplifier and/or preamp. Other than that, you have to make a two way link to any other node you're talking to, so there's no real reason to separate transmit and receive. Amplifiers aren't a good idea anyway in most cases with HSMM. It's fairly common to put a beam on one port and the stock antenna omni on the other port. That way, you can beam to another node, and then mesh with other local nodes wirelessly. If you want to put two beams at one location, it may very well be easiest to use two routers and let them mesh wirelessly. The fact that coax has such a high loss rate per foot at 2.4 GHz has a big effect on what's practical in terms of situating antennas vs. the routers.
|
|
IP Logged
|
I'm not part of the development team, so take what I say with a grain of salt. I'm also easily confused.
Check out the free Wireless Networking Book |
|
|
|
|
|
|
Subject :Re:Multi-directional node implementation..
2013-03-13- 04:41:31
|
|
|
| W8PSA |
|
|
| Member |
|
Joined: 2013-01-29- 07:25:04
Posts: 3
Location: |
|
|
|
|
|
|
That makes a lot of sense, so if I have/want a backhaul to specific node I use the yagi but have the omni for talking to the rest of them - the lights coming on, still a bit dim but getting brighter |
|
IP Logged
|
|
|
|
|
