[chopsueyar]

The system works consistently through heavy rain, smog and a couple of good sized trees.

2.4 miles at 11Mbps.

What frequency is this? 900MHz? Not 2.4GHz.

[kragen]

Last I checked, the record for 2.4GHz links was something like 100km. Why are you skeptical?

[chopsueyar]

Again, heavy rain, smog and a couple of good sized trees

2.4GHz requires line of sight and has major problems with water and trees.

900 MHz is much more forgiving.

[kragen]

Yeah, but we're only talking about <4km here. Rain fade in the 2.4GHz band could produce up to 2dB of attenuation under flash-flood-thunderstorm conditions. 2dB is not a big deal! At 10km or 20km or 40km you might have a point.

[chopsueyar]

So, 2.4GHz can transmit through trees?

[kragen]

It depends. It doesn't penetrate very far into the trunk, but it doesn't have that much trouble with leaves and twigs. (Until they get rained on.) So you can have a line of sight that's pretty much blocked by trees visually, but quite clear in 2.4GHz.

[chopsueyar]

So, if it is raining and the tree gets wet, it will not transmit through the tree, correct?