1262 and 802.11n - Antenna Options

Unanswered Question
Jun 7th, 2012

We're UK based. Is there an optimum way to acheive full 802.11n throughput using 1262 dual-band APs in an open-plan office?

APs will need to be wall mounted, becasue there isn't a false ceiling, but won't need to be located in any corner.

Presuming we must utilise both integrated and external antennas for full bandwidth, I've come up with two possible combinations: -

  • 3 x Integrated 2.4GHz antennas plus 1 x external 5GHz antenna: -
    • 1 x AIR-AP1262N-E-K9 "802.11a/g/n Standalone AP; Ext Ant; E Reg Domain"
    • 3 x AIR-ANT2422DW-R "2.4 GHz 2.2 dBi Swivel Dipole Antenna White, RP-TNC"
    • 1 x AIR-ANT5140NV-R= "Cisco Aironet 5-GHz MIMO Wall Mount Omnidirectional Antenna"

OR

  • 3 x Integrated 5GHz antennas plus 1 x external 2.4GHz antenna
    • 1 x AIR-AP1262N-E-K9 "802.11a/g/n Standalone AP; Ext Ant; E Reg Domain"
    • 3 x AIR-ANT5135DW-R "5 GHz 3.5 dBi Swivel Dipole Antenna White, RP-TNC"
    • 1 x AIR-ANT2440NV-R= "Cisco Aironet 2.4-GHz MIMO Wall-Mounted Omnidirectional Antenna"

The above is all subject to a wireless survey, but just looking at a budgetary price for now.

I have this problem too.
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Leo Laohoo Thu, 06/07/2012 - 19:15

Give us the physical description of the "wide open space" you are talking about.

1.  Dimension:  L x W x H

2.  Layout of all the filling cabinets and compactors

3.  Do you have a floor map that you can upload?

4.  How many users will be using the wireless (minimum and maximum)?

5.  Who are your neighbors and their wireless?

6.  Highest likelyhood of people rallying around to use the wireless?\

7.  Will you be using a WLC or not?

8.  Mark out where the walls are and what type:  wood, concrete, metal, etc.

shillings Fri, 06/08/2012 - 01:03

Thanks leolaohoo. Lots of considerations, many more than I anticipated. To be honest, I think I'll leave all this to the wireless survey as I don't want to waste members time when a wireless engineer will work out all this detail for us.

fbarboza Thu, 06/07/2012 - 19:32

Hi,

Besides the antennas to be able to achive N speeds dont forget to configure the SSIDs with no encryption or just with WPA version 2+AES only.

shillings Fri, 06/08/2012 - 01:08

Thanks also fbarboza - I didn't realise that. I will look into it a bit more.

I also found out, after my initial post, that all the 1262 antennas are external, so it will have 6 in total if we want to cover both frequencies using 'rubber duck' dipole type. Therefore, the physical connectivity of the 1262 is making more sense now and please ignore the part codes in my initial post.

Leo Laohoo Sat, 06/09/2012 - 22:52

I also found out, after my initial post, that all the 1262 antennas are external, so it will have 6 in total if we want to cover both frequencies using 'rubber duck' dipole type.

The 1200-series WAPs (including the 1260) all have external antennas.

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Posted June 7, 2012 at 6:42 AM
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