FlemmingFrandsen
01-07-2009, 02:38 AM
With all those mini-pci slots for wifi cards I'm wondering if the wifi cards are shielded well enough to live that close together by default or extra precautions must be taken to ensure proper shielding.
Can I assume that mini-pci radios are well enough shielded that several can be mounted on the same motherboard without interference?
Let me give you some background; I currently have a problem with a repeater node (B below), here the Internet uplink is at A and C is the 2.4 GHz cluster in town:
A <-- 5 km (26 dBi parabolics) --> B <-- 800m (19 dBi panels) --> C
The A-B link is on channel 152 (5.76 GHz turbo) and the B-C link is on channel 160 (5.8 Ghz turbo), the two antennas are just about back-to back, so spacing is about 10 cm).
I get 30 Mb/s throughput in either direction from B, but when testing throughput via that node from A to C, I get only 10 Mb/s, so I suspect interference between the two radios.
I guess my real question is if I can be certain that it's the antenna placement that's bad or if I also have to suspect the mini-pci radios?
With what I have gathered I should have at least 1 m between the two antennas even though they are back to back, is that enough without any extra channel spacing (there are only 2 static turbo channels in that part of the 5 GHz band)?
Can I assume that mini-pci radios are well enough shielded that several can be mounted on the same motherboard without interference?
Let me give you some background; I currently have a problem with a repeater node (B below), here the Internet uplink is at A and C is the 2.4 GHz cluster in town:
A <-- 5 km (26 dBi parabolics) --> B <-- 800m (19 dBi panels) --> C
The A-B link is on channel 152 (5.76 GHz turbo) and the B-C link is on channel 160 (5.8 Ghz turbo), the two antennas are just about back-to back, so spacing is about 10 cm).
I get 30 Mb/s throughput in either direction from B, but when testing throughput via that node from A to C, I get only 10 Mb/s, so I suspect interference between the two radios.
I guess my real question is if I can be certain that it's the antenna placement that's bad or if I also have to suspect the mini-pci radios?
With what I have gathered I should have at least 1 m between the two antennas even though they are back to back, is that enough without any extra channel spacing (there are only 2 static turbo channels in that part of the 5 GHz band)?
