How does rain affect signal loss?

[tkmbe]

Hello

Has anybody practical information of dropping signal issues at 5.8GHz versus link distance?
I think your region is very nice to have info because very low raining ;-)

Would be nice to have a collection and to put on some page!
More nice wuold be a table with
theoretical signal, practical signal nice weather, practical sig. "little" raining, practical sig. "havy" raining
For example:
30km link, antennas 27/27dbi, transmit power 23/23dbm, ...

Who has some information to contribute?

BTW: My idea is to have a 45km link with 27dbi grids at 5.8GHz with 23dbm cards.
Theoretical singnals are -70dbm. Now how much will this drop with raining ...
I don't need high speed in fact I will limit the client to 6M to have the "big" power ..

Please send infos to this forum and I will collect them and put on a page ...
Nice would be also infos about which equippment you are using, wrap, radio model etc.
Maybe madwifi would be a nice page. Any other pages to put ont?

Greetings

Beat

[Skaught]

I have only had issues with 5.8ghz links and fading back in the old days with tsunami radios that were +12db and only on a really long link, 54KM.

On this ofdm stuff I have never lost a link in bad weather. Usually the noise floor drops down in bad weather and things run better.

We are the lightning capital around here but we do not get much rain yearly so other climates may have other issues.

When I did 39ghz licensed microwave, weather was a HUGE issue but that is why we ran reduant rings everywhere.

[mp3turbo]

> When I did 39ghz licensed microwave, weather was a HUGE issue but that is why we ran reduant rings everywhere.

can you tell me more? What weather - rain, fog, snow, what distance and equipment you used?

[pananix]

Hello

Has anybody practical information of dropping signal issues at 5.8GHz versus link distance?
I think your region is very nice to have info because very low raining ;-)

[snip]


Beat

Neither 2.4 nor 5.8 are affected by rain. Now, if your connectors get wet, well, say goodbye to your signal.

Here in the Republic of Panama we're in the rainiest month of the year. It has poured here for days. My signals don't waver. I have a 5.3GHz link running at 1 watt radiated (25db antennas) over 22 miles. Runs on 802.11a with no problem, SNR 7/8. 12Mb throughput constant. Can't ask for better.

Ciao,

David A. Bandel