Cisco CAB-L400-20-N-N Cables Antenna Cable 20 Feet
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CAB-L400-20-N-N Cisco 20-Feet 6M Ultra Low Loss Lmr 400 New

Availability: In Stock
Part Number#: CAB-L400-20-N-N
List Price was: $662.79
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Short Description:
CAB-L400-20-N-N 20-Feet 6M Ultra Low Loss Lmr 400 Cable With N Connectors | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Features and Benefits

The CAB-L400-20-N-N is a high-quality cable from Cisco that offers a number of features and benefits, including:

  • Length: The cable is 20 feet (6 meters) long, which provides a good amount of flexibility in terms of placement and installation.
  • Ultra-low loss: The cable has an ultra-low loss design, which means that signal attenuation is minimal. This helps to ensure that the signal strength remains strong over long distances.
  • LMR 400 cable: The cable is made from high-quality LMR 400 coaxial cable, which is known for its excellent performance and durability.
  • N-type connectors: The cable features N-type connectors, which are a popular choice for high-frequency applications due to their low loss and high power handling capabilities.
  • Weather-resistant: The cable is designed to be weather-resistant, which makes it ideal for outdoor installations.
  • High-speed data transmission: The cable is capable of high-speed data transmission, which is essential for applications such as video conferencing, streaming, and gaming.
  • Easy to install: The cable is easy to install, thanks to its pre-terminated connectors and flexible design.
  • Compatible with Cisco equipment: The cable is designed to work seamlessly with Cisco networking equipment, ensuring reliable and consistent performance.

Understanding Loss and Signal Attenuation in Networking

The CAB-L400-20-N-N is a 20-foot 6M Ultra Low Loss LMR 400 cable produced by Cisco for networking purposes. This cable is designed to transmit signals with minimal attenuation or loss over a distance of up to 20 feet.

Loss and signal attenuation are important factors to consider when selecting a cable for networking. Loss refers to the decrease in signal strength as it travels through the cable. Signal attenuation, on the other hand, refers to the reduction in signal strength caused by the resistance and other electrical properties of the cable.

The CAB-L400-20-N-N is an Ultra Low Loss cable, which means it is designed to minimize loss and attenuation. This is achieved through the use of high-quality materials and advanced manufacturing techniques.

The LMR 400 cable used in this product is a type of coaxial cable that consists of a central conductor surrounded by a dielectric insulator, which is in turn surrounded by a conductive shield. The shield is covered by a protective jacket. This design helps to minimize signal loss and attenuation by reducing the amount of interference and energy loss due to the cable's electrical properties.

In networking, loss and signal attenuation can lead to a reduction in signal quality and speed. This can result in data transmission errors, slow download speeds, and other issues. By using a cable like the CAB-L400-20-N-N, which has minimal loss and attenuation, network performance can be improved.

Troubleshoot Cable-Related Networking Issues

The CAB-L400-20-N-N is a high-quality cable designed for networking applications that require minimal loss and signal attenuation. However, like any cable, it can still experience issues that affect network performance. Here are some steps to troubleshoot cable-related networking issues with the CAB-L400-20-N-N:

  • Check the cable connections: Ensure that the cable is properly connected at both ends. If the connection is loose, it can lead to signal loss or attenuation. Make sure the cable is securely plugged into both the devices it's connecting.
  • Check for cable damage: Check the entire length of the cable for any signs of physical damage such as cuts, kinks, or bends. Any damage can affect signal quality and transmission. Replace the cable if necessary.
  • Check cable length: The CAB-L400-20-N-N is designed for use up to 20 feet. If the cable is longer than 20 feet, it may cause signal attenuation. In this case, consider using a signal booster or a signal repeater to improve signal strength.
  • Check for interference: The environment in which the cable is installed can affect signal quality. Ensure that the cable is not in close proximity to other electrical devices or sources of interference such as radios, microwaves, or other electronic devices.
  • Test the cable: If the above steps do not resolve the issue, use a cable tester to verify if the cable is functioning correctly. This will help you identify any faults in the cable and ensure that it meets the required standards.

General Information:

  • Manufacturer: Cisco Systems, Inc
  • Manufacturer Part Number: CAB-L400-20-N-N
  • Brand Name: Cisco
  • Product Name: 20 ft, LMR-400 Cable with a N Male and N Male Connector
  • Product Type: Antenna Cable

Technical Information:

  • Cable Type: N-Type
  • Cable Length: 20 ft
  • Connector on First End: 1 x N-Type Male Antenna
  • Connector on Second End: 1 x N-Type Male Antenna
  • Device Supported: Network Device


  • Designed For: Cisco 1120, 1240, 2010, 2010 Connected Grid
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

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