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Monthly Archives: August 2017

  1. Custom Cables and Assemblies

    For over twenty years, ShowMeCables has been designing, prototyping and manufacturing custom cables. With manufacturing facilities in the United States and Asia, we have the capabilities to manufacture at any volume. No matter the type, size or budget, we can help!

    Any Size
    We handle any size project, small to large. Our in-house prototyping can build a single cable for your project. Our international factory can turn that single cable into a full OEM production line.
    Any Challenge
    No matter what type of cable you need, we can help.  We specialize in custom network, fiber, coax, telephone, telco, audio/video, and serial cables.  We also provide custom kits, bundles and cable sleeving.


      • Custom Manufacturing
      • In-House Prototyping
      • Custom Imprinting
      • Cables Tested
      • Quality Check
      • Custom Packaging
      • Just In Time Delivery
      • Free Blind Drop Shipping
      • Highly Skilled Sales Staff
      • Expert Technical Support
    Any Budget
    With flexible manufacturing options, we can make custom affordable. Let our team of experts provide consultation and cost saving solutions, including internationally manufactured options.


    Any Timeframe
    We specialize in quick turnaround custom projects. When you’re in a jam and need cables quickly, only we can help. Or, if you have a longer time frame for your custom project, our international manufacturing can save you money.

    Custom Network Cables

    Our custom Cat5e, Cat6, Cat6a & Cat7 cables can be made to your exact specifications.

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  2. Copper Clad Aluminum vs. Pure Copper Cables

    When shopping for Cat5e or Cat6 network cables, make sure you are comparing apples to apples. One of the most common tactics of the “low cost leaders” is to use aluminum instead of copper wire. This can lead to network issues from using inferior materials to transmit the signal. The problem is further heightened because there are no visual differences between a CCA cable and a pure copper cable. ShowMeCables guarantees that all of our patch cables are pure copper and are ready for Cat5e, Cat6, Cat6a or Cat7 networks.

    Creating a Copper Clad Aluminum Cable

    Looking to cut costs, manufacturers started using aluminum wire dipped in a thin coating of copper. This technique created an aluminum core cable surrounded by a thin layer of copper. If you have ever purchased coax cable, you may have purchased cable that is copper clad. If you scrape the center conductor, the gold copper will flake off and expose the silver metal core. Consumer ignorance, slick marketing and an identical appearance have allowed copper clad aluminum patch cables to become more common in the marketplace.

    The Dangers of Using CCA Cables

    The performance and safety of CCA cables are radically different. In fact, aluminum network cables violate TIA and IEC standards for Cat5e and Cat6 cables. Aluminum patch cables, often marked as CCA or CCE (for Copper Clad Ethernet), has higher attenuation than pure copper cables. This results in a greater loss of data, as packets have to be re-transmitted. The more data that is re-transmitted, the slower your network performs. Plus, these problems are compounded by every foot of cable you use; the longer the cable, the worse the performance. Is the hit in network performance worth saving a few cents? CCA cables also have a 55% higher DC resistance. This increases the amount of energy that is transferred into heat

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  3. Better Know a Connector: SMA

    The SMA connector(SubMiniature version A) is a 50 ohm coaxial connector. It is visually similar to an F type connector that is commonly used for audio/video communication, but has different dimensions, mechanical properties and is used for different applications such as RF communications up to 18 GHz. Due to its construction, SMA connectors provide a strong and durable connection that minimizes reflections, limiting attenuation, and makes it a great choice when working with microwave frequencies.

    SMA Male Connector

    The SMA male connector is identified by inside 1/4″-36 threads and a 5/16″ hex nut. A standard polarity connector will have a male pin.

    SMA Male Dimensions

    • Outer Diameter: 6.35mm
    • Inner Diameter: 4.59mm
    • Pin Diameter: .97mm
    • Pin Tip Diameter: .38mm

    SMA Female Connector

    The SMA female connector is identified by outside 1/4″-36 threads. A standard polarity connector will have a female sleeve.

    SMA Female Dimensions

    • Outer Diameter: 5.49mm
    • Inner Diameter: 4.60mm
    • Pin Insert Diameter: 1.30mm

    Reverse Polarity (RP) SMA Male Connector


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  4. How To: Make a Dread Hanger Cable Manager

    If you’ve spent any time on the Internet in the last year, chances are you seen some great examples for how to organize long cables. Today, the ShowMeCables blog is bringing you a DIY for creating a similar effect in your own storage closet.

    Step 1. Choose Your Model

    This is, arguably, the hardest step of the process as there are many different routes to take. Just the word “dreadlocks” conjures up images of the well-loved Rastafarian Bob Marley, the godfather of dreads himself. Wiz Khalifa, the lead singers of Korn and Whoopie Goldberg also sport the famous hairstyle with 

    effortlessness. For the adventurers out there, Captain Jack Sparrow and Michonne from the Walking Dead each sport their dreads with fantastic accessories. Then there’s always Bradley Cooper’s character from the movie Hit and Run if you’re into more obscure references. This is also a fantastic opportunity to see how you or a co-worker would look with dreads. In that case, take a selfie or do some Facebook stalking to get the pictures that you’ll need.







    Step 2. Print and Cut

    Once you’ve come to a decision on your model, go find a large image that has a clear view of the face. Print your picture, then grab your trusty scissors. Cut around the face ever so carefully, removing the neck, hair and whatever else is in the picture. If your model rocks a headband or hat, cut that out to

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  5. Discussing Cat5 Length Limits

    Cat5 cable is a standard term for twisted pair cable commonly used for connecting PCs and hardware to different equipment. It has been replaced by Cat5e, which is an enhanced version of Cat5. These share many of the same physical characteristics including distance limitations, but Cat5e is designed for faster networking speeds and reduced crosstalk interference. The maximum length you can run Cat5, Cat5e, Cat6 and Cat6a cable is 100 meters or 328 feet. If you require a longer run, you will need to put an active component, such as a router, in-between the signals.

    The length limit for Cat5 also includes any patch cables, jacks or couplers that are connected in the run. For example, you could not run 100 meters of Cat5 cable between the walls, and then connect with a jack to another 10 meter cable. In terms of distance limitation, the 100 meters of Cat5, the jack and additional 10 

    meters of Cat5 are all seen as a single length of cable. It is recommended to only run the structured cabling (the horizontal cabling or the infrastructure cabling) 90 meters to give adequate length for end users patching into the network jacks.

    Although Cat5 has been eclipsed by Cat5e and now Cat6 cables, the Cat5e and Cat6 max length distance limitation remains unchanged. If you need to go farther than 100 meters and can’t add an active component, you will need to use fiber optic cable. Depending upon the type of fiber you use, the distance limitation can be up to 10 kilometers. By using a

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  6. RJ45 Pinout

    A RJ45 connector is a modular 8 position, 8 pin connector used for terminating Cat5e or Cat6 twisted pair cable. A pinout is a specific arrangement of wires that dictate how the connector is terminated. There are multiple pinouts for RJ45 connectors including straight through (T568A or T568B), crossover, rolled, T1, and loopback. Straight through is the most common type of cable and is used for connecting your computer to your network. The other pinouts are for specialty cables that are used for unique network applications. Straight-Through Pinout Within the family of straight-through color codes, there are two standards recognized by ANSI, TIA and EIA. The first is the T568A wiring standard and the second is T568B. T568B has surpassed 568A and is seen as the default wiring scheme for twisted pair structured cabling. If you are unsure of which to use, choose 568B.

    T-568A RJ45 Pinout

    T-568B RJ45 Pinout

    Cross Over Pinout
    A crossover cable utilizes two different RJ45 pinouts for the two ends of the cable. If you need to connect 568A equipment to 568B you can use a crossover cable.

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  7. DIY: Create A Shoebox Cable Organizer

    With each purchase of a new gadget comes a plethora of charging cables. It’s easy to absent-mindedly throw everything into a drawer to be sorted or used later. But that method inevitably results in a tangled mess of cables and cords that rivals that of Clark Griswold’s Christmas lights. Here’s a better way to stow away those extra cords so that the next time you need them, you won’t have to battle The Cable-Spaghetti Monster.

    What You’ll Need:

    • Shoebox
    • Scissors
    • Tape (ours is fancy gold duct tape)
    • A pen/permanent marker
    • Cardboard roll (from TP, gift wrap, etc.)
    • Cables!

    Step 1. Measure and Cut

    Grab your cardboard roll and place inside your shoebox so that you can measure how tall to cut each section. We used a pen to mark the height. Once you’ve made your marks, cut away! Keep cutting segments until you have enough to fill up the inside of your shoebox. Ours took 4 rows of 6, or 24 rolls.

    Step 2. Add Stability

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  8. What is USB Type-C?

    Apple recently unveiled its newest MacBook Pro, announcing that it would use a single USB Type-C port for power and data transfer. USB Type-C has since been the topic of conversation in the tech world, paving the way for exciting possibilities for improved USB standards and devices.

    What is USB Type-C?

    Type-C is a new shape of USB connector which is double-sided with 24-pins. It is reversible, a huge improvement to any of us who have once fumbled with plugging a Type-A connector into a port. While Type-C itself is only a change in shape, the excitement lies in the potential for improved standards. The underlying technology of Type-C could be anything from the outdated USB 2.0 to the latest and greatest USB 3.1 and USB Power Delivery (USB PD).

    How is USB Type-C Better?

    Currently, most devices use USB Type-A, which is bulky and only plugs into a port in one direction. Because Type-A is such a large plug, its ports are equally large. Acceptable for desktop computers, these large ports do not fit on modern, thin laptops, smartphones, tablets and cameras. USB Micro, Mini and Type-B were created to bridge this gap, and while these shapes have worked well in the past, the possibility of a new, universal cable is widely appealing. Type-C is about a third of the size of Type-A, giving it the potential to be used on various devices and thus eliminating the need for a bunch of different cables. Although, having a lot of different cables isn’t quite as revolting if you have a snazzy management system.

    What is USB 3.1?

    USB 3.1 is the latest standard in speed and power

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  9. Better Know a Connector: RP-TNC

    TNC connectors (Threaded Neill Concelman) are a 50 ohm coaxial connector. It is a higher performing, threaded version of the more common, BNC connector. It is used for RF communications up to 11 GHz. Due to its construction, with threaded coupling which create a secure connection, it is a great choice when working with microwave frequencies. The TNC connector is available in two varieties – standard polarity and reverse polarity (RP-TNC).

    History of RP-TNC Connectors

    Reverse polarity TNC connectors were popularized by WiFi manufacturers. They were looking for a way to comply with governmental regulations set forth by the FCC to limit consumers from connecting their own antennas. This regulation has largely been abandoned as the connectors are readily available to the general public. They are still a popular connector type used by WiFi equipment manufacturers.

    How to Determine a RP-TNC Connector

    There are a few steps to determine if you are dealing with a standard or reverse polarity connector. The first step is to determine the gender of the connector. Gender is determined by the threading of the connector. On a male connector, the threading will be on the inside. On a female connector the threading is on the outside. To think of it a different way, the male fits over the female.

    The left connctor has internal threading so it is considered a male TNC connector. The right connector has external threading so it is considered a female TNC connector.

    The second step in determining the polarity of a connector is to

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  10. Neat Patch NP2 Smart Cable Management

    The Neat Patch is a new tool for horizontal cable management. It’s innovative approach will save you time and money and will make your installations look professional with very little effort. Most horizontal cable managers amount to little more than cable duct. They allow you to run cables along the front or rear of your rack but fail to take advantage of the interior rack space. This can lead you with dangling cables if you don’t have exact lengths of cable. Excess cable can waste time and money, and will make your rack installs look messy. The Neat Patch cable management unit is designed to be used with any length of cable. Excess cable can be stored in the ventilated storage compartment, and only what you need remains visible. The makes your installation look neat and tidy. 1 foot patch cables are too short to connect, especially across a 19″ wide rack. While using longer cables will dangle. The Neat Patch combines traditional cable management and storage space with the use of 2 foot patch cables. This allows you enough length to patch across the length of your rack while maintaining proper bend radius and minimizing cable costs. The Neat Patch NP2 occupies two rack units and can be placed between 24 or 48 port patch panels or switches. Install on your rack like any two unit panel. The two foot cable should be looped and connected to your desired ports with the lines running through your duct and the excess stored in your organized. The neat patch can neatly store up to 48 patches.

    Neat Patch NP2The neat

    patch is available as a stand-alone unit or in a kit. The kits come with 24 or 48 2 foot Cat6 cables. There are ten colors to choose from so

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