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Cisco 2.4-GHz Swivel-Mount Dipole Antenna 
(23.7786.51)

This document outlines the specifications for and describes the 23.7786.51 2.4-GHz swivel-mount 
dipole antenna and contains the following sections:

Cisco 90-Day Limited Hardware Warranty Terms, page 1

Overview, page 4

Technical Specifications, page 4

System Requirements, page 6

Installation Notes, page 6

Safety Instructions, page 8

Obtaining Documentation, page 8

Documentation Feedback, page 9

Cisco Product Security Overview, page 10

Obtaining Technical Assistance, page 10

Obtaining Additional Publications and Information, page 12

Note

The 23.7786.51 2.4-GHz swivel-mount dipole antenna is only shipped with a new router, and is not 
available as a spare antenna.  For an equivalent separately orderable antenna, use the AIR-ANT4941.

Cisco 90-Day Limited Hardware Warranty Terms

There are special terms applicable to your hardware warranty and various services that you can use 
during the warranty period. Your formal Warranty Statement, including the warranties and license 
agreements applicable to Cisco software, is available on Cisco.com. Follow these steps to access and 
download the 

Cisco Information Packet

 and your warranty and license agreements from Cisco.com.

1.

Launch your browser, and go to this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/cetrans.htm

Summary of Contents for 2.4-GHz Swivel-Mount Dipole Antenna 23.7786.51

Page 1: ...ning Technical Assistance page 10 Obtaining Additional Publications and Information page 12 Note The 23 7786 51 2 4 GHz swivel mount dipole antenna is only shipped with a new router and is not available as a spare antenna For an equivalent separately orderable antenna use the AIR ANT4941 Cisco 90 Day Limited Hardware Warranty Terms There are special terms applicable to your hardware warranty and v...

Page 2: ...2 Cisco 2 4 GHz Swivel Mount Dipole Antenna 23 7786 51 OL 7701 01 Cisco 90 Day Limited Hardware Warranty Terms The Warranties and License Agreements page appears ...

Page 3: ...the document c Click Go The Cisco warranty page appears d Review the document online or click the PDF icon to download and print the document in Adobe Portable Document Format PDF You can also contact the Cisco service and support website for assistance http www cisco com public Support_root shtml Duration of Hardware Warranty Ninety 90 days Replacement Repair or Refund Policy for Hardware Cisco o...

Page 4: ...ows the 23 7786 51 antenna Figure 1 Cisco 23 7786 51 Antenna Technical Specifications The following table lists the technical specifications for the 23 7786 51 antenna 74574 Antenna type Dipole Operating frequency range 2400 to 2500 MHz Maximum VSWR1 bandwidth 2 0 1 Peak gain 2 2 dBi Polarization Linear vertical Azimuth plane beamwidth Omnidirectional Elevation plane 3 dB beamwidth H plane Omnidir...

Page 5: ...2 shows the H plane radiation pattern at 2 4 to 2 5 GHz for the 23 7786 51 antenna Figure 2 H Plane Pattern at 2 4 to 2 5 GHz Environment Indoor Mounting Direct 1 VSWR voltage standing wave ratio 0 300 330 270 240 210 180 150 120 90 60 30 135343 30 2 10 3 0 3 6 9 12 15 18 21 24 21 18 15 12 9 6 3 0 3 ...

Page 6: ...nt For information about orienting the dipole antenna see the hardware installation guide for your access point In addition to antenna orientation wireless access point installation location with respect to all wireless clients plays a significant role in determining overall network performance Clients at the furthest coverage points might have 10 to 50 of the bandwidth of clients close to it Wire...

Page 7: ...tion to one or two walls without degrading coverage Concrete and wood block walls limit signal penetration to three or four walls A signal can penetrate five or six walls constructed of drywall or wood A thick metal wall or wire mesh stucco walls causes signals to reflect back and cause poor penetration Avoid mounting the antenna next to a column or vertical support that could create a shadow zone...

Page 8: ...safety assume that any line is an electric power line until determined otherwise Call your local power company or building maintenance organization if you are unsure about cables close to your mounting location When installing your antenna do not use a metal ladder Do dress properly shoes with rubber soles and heels rubber gloves and a long sleeved shirt or jacket If an accident or emergency occur...

Page 9: ...d instructions for ordering documentation at this URL http www cisco com univercd cc td doc es_inpck pdi htm You can order Cisco documentation in these ways Registered Cisco com users Cisco direct customers can order Cisco product documentation from the Ordering tool http www cisco com en US partner ordering Nonregistered Cisco com users can order documentation through a local account representati...

Page 10: ...to correct all vulnerabilities quickly If you think that you might have identified a vulnerability in a Cisco product contact PSIRT Emergencies security alert cisco com Nonemergencies psirt cisco com Tip We encourage you to use Pretty Good Privacy PGP or a compatible product to encrypt any sensitive information that you send to Cisco PSIRT can work from encrypted information that is compatible wit...

Page 11: ...d pasting show command output Search results show an illustration of your product with the serial number label location highlighted Locate the serial number label on your product and record the information before placing a service call Submitting a Service Request Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests S3 and S4 service requests are those in...

Page 12: ... from various online and printed sources Cisco Marketplace provides a variety of Cisco books reference guides and logo merchandise Visit Cisco Marketplace the company store at this URL http www cisco com go marketplace Cisco Press publishes a wide range of general networking training and certification titles Both new and experienced users will benefit from these publications For current Cisco Pres...

Page 13: ...Inc and Access Registrar Aironet Catalyst CCDA CCDP CCIE CCIP CCNA CCNP CCSP Cisco the Cisco Certified Internetwork Expert logo Cisco IOS Cisco Press Cisco Systems Cisco Systems Capital the Cisco Systems logo Cisco Unity Enterprise Solver EtherChannel EtherFast EtherSwitch Fast Step Follow Me Browsing FormShare GigaDrive HomeLink Internet Quotient IOS iPhone IP TV iQ Expertise the iQ logo iQ Net R...

Page 14: ...14 Cisco 2 4 GHz Swivel Mount Dipole Antenna 23 7786 51 OL 7701 01 Obtaining Additional Publications and Information ...

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