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Do fog affect wireless signal connectivity?

Posted: Tue Mar 04, 2014 7:14 pm
by interlinkscbe
hi Friends i just need a detailed clarification for my query.

1. Do fog affects wireless signal transmission? Do the fog have serious impact over the wireless links? Due to fog will the bandwidth drop?

2. Do rain affect wireless signals and bandwidth?

Re: Do fog affect wireless signal connectivity?

Posted: Tue Mar 04, 2014 7:21 pm
by rextended
1) & 2) Depend on hardware, power and distance you use. If you use 2 STX and distance > 10Km yes.

Re: Do fog affect wireless signal connectivity?

Posted: Tue Mar 04, 2014 7:54 pm
by interlinkscbe
Planned to use Groove 52Hn with 16 dbi 5ghz Omni antenna and the distance would be within 5 kms and the required bandwidth is min 10 mbps.

Re: Do fog affect wireless signal connectivity?

Posted: Tue Mar 04, 2014 8:25 pm
by plisken
Use directional antennas is match better for wireless links.
Omnidirectional antenna is not so good idee for this situation.

Re: Do fog affect wireless signal connectivity?

Posted: Tue Mar 04, 2014 8:39 pm
by rextended
Planned to use Groove 52Hn with 16 dbi 5ghz Omni antenna and the distance would be within 5 kms and the required bandwidth is min 10 mbps.
NEVER USE OMNIDIRECTIONAL ANTENNA FOR PTP OR PTMP!!!

Re: Do fog affect wireless signal connectivity?

Posted: Wed Mar 05, 2014 1:57 am
by sasskass
Hello,

It mostly depends of noise and antenna type you are going to use. If you are alone operating in 5Ghz band and los is good, then it will be no prob. Keep in mind to use only DC grounded quality omni-s.

What about frog, then it mostly affects when you are using yesterday badly isolated "lego equipmnet" like long RF cables antennas wo drain etc. But 5Ghz itself is not affected by frog/rain, 2,4Ghz does!

Aleksander

Re: Do fog affect wireless signal connectivity?

Posted: Wed Mar 05, 2014 9:50 am
by plisken
This is not true what sasskass say .All radio signals may be obscured by weather influences.The higher the frequency the more sensitive to weather conditions.Never use an omni-directional antenna for 5 km link.This does not work. A good point to point link do you do with directional antennas (directional antennas)

Re: Do fog affect wireless signal connectivity?

Posted: Wed Mar 05, 2014 12:02 pm
by interlinkscbe
The main issue of going for omni antenna is the turbines directions used to change according to wind direction. Sometimes the turbine might rotate its direction to 180 degree and so that we planning of omni antennas.Is there any alternate ideas and suggestions is choosing the right products?

Re: Do fog affect wireless signal connectivity?

Posted: Wed Mar 05, 2014 12:17 pm
by plisken
Use on the turbines omni's as client, and for ap directional antennas but 5 km distance is match for do it so and stabile.
What is your home lanquage?

Re: Do fog affect wireless signal connectivity?

Posted: Wed Mar 05, 2014 12:48 pm
by interlinkscbe
thanks plisken for ur suggestions. pls tell me the routerboard model suitable for my requirements in both cases of AP and client side.

Re: Do fog affect wireless signal connectivity?

Posted: Wed Mar 05, 2014 1:15 pm
by rextended
Use two SXT.

Re: Do fog affect wireless signal connectivity?

Posted: Wed Mar 05, 2014 1:25 pm
by plisken
can you place the antennas on a part of the wind turbine that not rotated?

If not you can't have a stable link this is shure.

If the wind turbine rotate it maybe that the blades becomes an obstruction for the link.

Do understand me. I am not in favour of this setup.

I can guarantee no stable link.You can use a groove on a wind turbine with a stella doradus antenna like this.

http://www.stelladoradus.com/wp-content ... -08-10.pdf

Use heavy duty antenna, think of the wind load that windturbines produce.

As Accesspoint http://routerboard.com/RBSXTG-5HPnD-HGr2 or also a groove with a 23 dB pannel antenna.

I garanted nothing with this setup.

The best solution is to both sites use this RBSXTG-5HPnD-HGr2 this if the antenna can placed on an not rotated place.

Re: Do fog affect wireless signal connectivity?

Posted: Fri Mar 07, 2014 7:42 am
by interlinkscbe
the main issue is that we cant place the device in a fixed point of the turbine. Only scope is placing the device at the top of the turbine which used to rotate based on the wind direction. my application is IP surveillance and so i need atleast 5 mbps throughput.Our proposed project is a wireless intranet project for wind turbines connectivity.The application is IP surveillance.The monitoring office is 5 kms away from the 1st wind turbine. totally there are 10 turbines which are located 500 mts away from each turbine. the main issue here is we cant go for a directional antenna as the turbine might rotate to 360 degree based on wind direction. All the 10 turbines are placed in the same line of sight from the monitoring office.this is the case and we need the appropriate solution in terms of choosing the right product and right network structure.

Re: Do fog affect wireless signal connectivity?

Posted: Fri Mar 07, 2014 12:27 pm
by leonix
Only 5km? Put a Omnitik on the top of the turbine and a Sextant at your office. This should work at lower rates. (I guess you will get about 20Mbps with no obstacles in line of sight (no trees!)). But 5km is the limit in this config.

Leo.

Re: Do fog affect wireless signal connectivity?

Posted: Fri Mar 07, 2014 12:56 pm
by rjickity
can you place a mast somewhere offside of the wind farm ?

you could maybe put an omni on each turbine in a mesh config and hand off to a side mast which can then give a fixed ptp to the office 5km away

Re: Do fog affect wireless signal connectivity?

Posted: Sat Mar 08, 2014 7:23 am
by interlinkscbe
thanks leonix and rjikcity for ur ideas. is it possible for linking omnitik and Groove 0r RB433 with Dish antenna at a distance of 10 km and can we expect atleast 5 mbps throughput