Cisco 23.7786.51 User Manual
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 3
• Technical Specifications, page 3
• System Requirements, page 5
• Installation Notes, page 5
• Safety Instructions, page 7
• Obtaining Documentation, page 7
• Documentation Feedback, page 8
• Cisco Product Security Overview, page 9
• Obtaining Technical Assistance, page 9
• Obtaining Additional Publications and Information, page 11
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
The Warranties and License Agreements page appears.
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
© 2005 Cisco Systems, Inc. All rights reserved.
Cisco 90-Day Limited Hardware Warranty Terms
2. To read the Cisco Information Packet, follow these steps:
a. Click the Information Packet Number field, and make sure that the part number
78-5235-03A0 is highlighted.
b. Select the language in which you would like to read the document.
c. Click Go.
The Cisco Limited Warranty and Software License page from the Information Packet appears.
d. Read the document online, or click the PDF icon to download and print the document in Adobe
Portable Document Format (PDF).
Note You must have Adobe Acrobat Reader to view and print PDF files. You can download
the reader from Adobe’s website: http://www.adobe.com
3. To read translated and localized warranty information about your product, follow these steps:
a. Enter this part number in the Warranty Document Number field:
78-5236-01C0
b. Select the language in which you would like to read 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 or its service center will use commercially reasonable efforts to ship a replacement part within ten
(10) working days after receipt of a Return Materials Authorization (RMA) request. Actual delivery
times can vary, depending on the customer location.
Cisco reserves the right to refund the purchase price as its exclusive warranty remedy.
To Receive a Return Materials Authorization (RMA) Number
Contact the company from whom you purchased the product. If you purchased the product directly from
Cisco, contact your Cisco Sales and Service Representative.
Complete the information below, and keep it for reference:
Company product purchased from
Company telephone number
Product model number
Product serial number
Maintenance contract number
Cisco 2.4-GHz Swivel-Mount Dipole Antenna (23.7786.51)
2
OL-7701-01
Overview
Overview
The 23.7786.51 antenna operates in the 2.4-GHz band, and is designed for use with spatial-diversity
access point (AP) systems. The 23.7786.51 antenna is compatible with Cisco 802.11b/g radio products
using a reverse-polarity threaded Neill-Concelman (RP-TNC) connector.
Figure 1 shows the 23.7786.51 antenna.
Figure 1 Cisco 23.7786.51 Antenna
74574
Technical Specifications
The following table lists the technical specifications for the 23.7786.51 antenna.
Antenna type Dipole
Operating frequency range 2400 to 2500 MHz
Maximum VSWR
Peak gain 2.2 dBi
Polarization Linear (vertical)
Azimuth plane beamwidth Omnidirectional
Elevation plane 3 dB beamwidth (H-plane) Omnidirectional
Elevation plane 3 dB beamwidth (E-plane) 55 degrees
Maximum dimensions 6.4 x 0.5 in. (162 x 13 mm)
Weig h t 0.1 lb (0.05 kg)
Connector type RP-TNC
Enclosure ABS
1
bandwidth 2.0:1
OL-7701-01
Cisco 2.4-GHz Swivel-Mount Dipole Antenna (23.7786.51)
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Technical Specifications
0
-30 -2 -10
Environment Indoor
Mounting Direct
1. VSWR = voltage standing wave ratio
Figure 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
0
-12
-15
-18
-21
-24
-21
-18
-15
-12
3
330
0
-3
-6
-9
300
270
-9
240
-6
-3
0
3
210
180
30
60
9
120
150
135343
Cisco 2.4-GHz Swivel-Mount Dipole Antenna (23.7786.51)
4
OL-7701-01
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