• Advertisement

1260 access point 5GHz antenna options???

Configuring Wireless Cisco Networks and Wireless Controllers.

1260 access point 5GHz antenna options???

Postby Guest » Thu Jun 17, 2010 1:43 pm

Scenario is, I have a huge warehouse. I want to use 1260 Access Points on walls and ceilings. ceiling is 15m high and racks are 3m high.

 

What 5 GHz directional patch can I use? Is there a better option?

 

So far with some planning, I want to have directional antennas around the walls directing signal between racks. I want to fill the dead spots with ceiling mounted APs and antennas ideally directional patches.

 

Any advise would be warmly received.

Guest
 

Advertisement

Re:1260 access point 5GHz antenna options???

Postby Guest » Thu Jun 17, 2010 3:18 pm

The following link will give you a variety of antennaes that are compatible with the 1260.

 

http://www.cisco.com/en/US/products/hw/wireless/ps469/products_data_sheets_list.html

 

Have a read of the "Cisco Aironet Antennas and Accessories Reference Guide" first.  Remember that the 1260 has three antennaes for both the 2.4Ghz and 5Ghz so in some cases you may need to buy three per radio.

 

The latest offer from Cisco is the dual-band AIR-ANT2451NV which is a single unit suitable for the 1250 and 1260.  It has six RP-TNC pig-tails.

 

Just be wary of the following rule-of-thumbs:

 

Antennas transmit and receive radio signals which are susceptible to RF obstructions and common sources of interference that can reduce throughput and range of the device to which they are connected. Follow these guidelines to ensure the best possible performance:


•Keep the antenna away from metal obstructions such as heating and air-conditioning ducts, large ceiling trusses, building superstructures, and major power cabling runs. If necessary, use a rigid conduit to lower the antenna away from these obstructions.
•The density of the materials used in a building’s construction determines the number of walls the signal can pass through and still maintain adequate signal strength. Consider the following before choosing the location for your antenna:


–Signals penetrate paper and vinyl walls with little change to signal strength.
–Signals penetrate only one or two solid and pre-cast concrete walls without degrading signal strength.
–Signals penetrate three or four concrete and wood block walls without degrading signal strength.
–Signals penetrate five or six walls constructed of drywall or wood without degrading signal strength.
–Signals will likely reflect off a thick metal wall and may not penetrate it at all.
–Signals will likely reflect off a chain link fence or wire mesh spaced between 1 and 1 1/2 in. (2.5 and 3.8 cm). The fence acts as a harmonic reflector that blocks the signal.


•Install the antenna away from microwave ovens and 2-GHz cordless phones. These products can cause signal interference because they operate in the same frequency range as the device to which your antenna is connected.

 

Don be tempted to use signal/radio boosters.  The APs and antennaes weren designed for that scenario.

 

5.0Ghz was designed for high bandwidth but small "footprint" or range but 2.4Ghz has a larger range.  So you may want to consider this.

 

If you are really looking at directional antennae just make sure look at the horizontal and vertical radiation patterns found in the  "Cisco Aironet Antennas and Accessories Reference Guide".

 

Hope this helps.

 

Please don forget to rate useful posts.  Thanks.

Guest
 

Re:1260 access point 5GHz antenna options???

Postby Guest » Thu Jun 17, 2010 4:30 pm

Thanks for the info.

 

The issue still stands though - There doesn seem to be a directional patch antenna for the 5GHz on the 1260. 

Guest
 

Re:1260 access point 5GHz antenna options???

Postby Guest » Thu Jun 17, 2010 4:39 pm

AIR-ANT5195P (minimum one to maximum to three) & AIR-ANT5170P (minimum one) are candidates.

Guest
 

Re:1260 access point 5GHz antenna options???

Postby Guest » Thu Jun 17, 2010 6:06 pm

I was led to believe that the antenna for 1260 on 5GHz had to be 6dBi or lower. Am I wrong?

 

Thanks for the info up to now!

Guest
 



  • Advertisement


Similar topics

HTC mobile phone access WLAN problem
Forum: Cisco Wireless
Author: Anonymous
Replies: 14

QoS on trunked access links
Forum: Cisco Switching
Author: Anonymous
Replies: 4

QuickVPN and Outlook / Exchange mobile access fails
Forum: Small Business Routers
Author: Anonymous
Replies: 0

can I plug port 2 of my WLC 4404 into my dmz for guest user access
Forum: Cisco Wireless
Author: Anonymous
Replies: 0

ASA Blocking VPN access
Forum: Cisco Security
Author: Anonymous
Replies: 12


Return to Cisco Wireless

Who is online

Users browsing this forum: No registered users and 3 guests