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speaksandeep
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channel width for laptop use

Mon Aug 11, 2014 6:14 pm

we have configured RB433 as access point (ap-bridge) with 12dbi Omni antenna
what should be the configuration to get maximum output from the radio and antennas for a coverage of 300 meters.

we have setup channel width to 20/40 Mhz HT above, is it correct for laptop and mobile use,
my users are complaining that they are not getting signals even at 100 meter from antenna


Please suggest correct configuration
Regards,

Sandeep Baral
 
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rextended
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Re: channel width for laptop use

Mon Aug 11, 2014 7:33 pm

300 meters from antenna???

Indoor or outdor?

And the device used are capable to transmit back?

Use only 20MHz 802.11bg channel for maximum compatibility & stability
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TomjNorthIdaho
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Re: channel width for laptop use

Mon Aug 11, 2014 10:16 pm

If you encounter all kinds of problems try this.
- If you have the little omni antennas, and clients are in a 360 pattern - then point your antennas straight up and locate the antennas in a high location.

- If you have just bad connections - set the mode for B-Only and set your wireless-->advanced settings to the following:
On Fail Retry time 1.00
Disconnect Timeout 00:00:15
Preamble Mode long
Hw Retries 15

If you have a lot of connected clients - then also set Hw Protection Mode for cts-to-self
 
speaksandeep
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Re: channel width for laptop use

Mon Aug 11, 2014 11:08 pm

Dear All,

yes 300 meter from Antenna, and its outdoor.
Antennas are at 5 meter from ground.
Is the height ok, or we need to bring down the height to more lower.
Regards,

Sandeep Baral
 
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normis
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Re: channel width for laptop use

Tue Aug 12, 2014 11:51 am

laptop can't reach such distance, no matter what AP you will use. Laptop needs external antenna, or external CPE device, like an SXT attached.
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speaksandeep
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Re: channel width for laptop use

Tue Aug 12, 2014 12:59 pm

laptop users are just 10 meter to 300 meter from Omni antenna, and they are getting the signals


I just want to know what should be the idle height of the Omni Antenna from the roof of the house.
Regards,

Sandeep Baral
 
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BartoszP
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Re: channel width for laptop use

Tue Aug 12, 2014 1:33 pm

Speaksandeep:

AP + antenna IS CAPABLE to send signal for 300m BUT laptop IS NOT CAPABLE to send signal for 300m.
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jarda
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Re: channel width for laptop use

Tue Aug 12, 2014 3:13 pm

It's not so easy nor black or white. I tested successful connection between grooveA2hn with 7dbi omni antenna placed at 6m height and some mobile phones held in hands. Maximum distance with traffic was around 500m in rural area with clear environment. There were 2-3 clients connected to the ap around. Of course it was not stable or generally usable but it was possible. I would not intentionally rely on such concept with mobile devices.
 
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BartoszP
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Re: channel width for laptop use

Tue Aug 12, 2014 5:12 pm

Everything is more or less gray :-)

I have used ethernet category 5e segments longer than 190 m with success even they shouldn't be longer than 100 m as standard says.

Network should WORK not just work from time to time when you are in the right place of WiFi beam.
Last edited by BartoszP on Wed Aug 13, 2014 1:12 pm, edited 1 time in total.
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jarda
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Re: channel width for laptop use

Tue Aug 12, 2014 5:35 pm

Exactly. Therefore don't expect that having many mobiles hundreds of meters away of ap will work. Will not.
 
speaksandeep
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Re: channel width for laptop use

Tue Aug 12, 2014 5:52 pm

Thankyou for all suggestions

but no body answered by actual query

what should be the height of Omni Antenna above the house roof


Regards,
Regards,

Sandeep Baral
 
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BartoszP
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Re: channel width for laptop use

Tue Aug 12, 2014 10:49 pm

There is no right answer you can be satisfied with as 300m is far, far over the range than it should be.
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normis
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Re: channel width for laptop use

Wed Aug 13, 2014 10:03 am

Thankyou for all suggestions

but no body answered by actual query

what should be the height of Omni Antenna above the house roof


Regards,

OmniTik antenna radiation pattern is pretty narrow vertically. It should not be too high, it should be as low as possible
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speaksandeep
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Re: channel width for laptop use

Fri Aug 15, 2014 3:11 pm

Thankyou for the correct answer.

One more query.
We are using Mikrotik wireless for VOIP calling like Skype and others
what should be the best configuration of Mikrotik to support voip traffic, configuration like preamble key

Please reply up to the point only
Regards,

Sandeep Baral

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