What is Polarity?

Polarization refers to the orientation of the electric field component of an electromagnetic wave with respect to the Earth’s surface. An electromagnetic wave is composed of electric and magnetic fields propagating perpendicular to each other. Radio and light are both electromagnetic waves.

What is Polarity?

Electromagnetic waves can propagate with linear, circular or elliptical polarization. Linear polarization is the most popular method used in WiFi communications and can take two forms, vertical and horizontal. Some antennas utilize dual polarity which provides access and interoperability with both vertical and horizontal polarized antennas.

Other Frequently Asked Questions:


Account Management	Can I change my billing address?

	How can I apply for a credit account?

	How can I view my account and payment types and pricing information?

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	How do I view my item history?

	What if I forgot my password?

	What is your remittance address?

	Who is my L-com contact?

Enclosures	What does NEMA mean?

How do I ...	How can I assemble the 4 wires onto CNUSB-A or CNUSB-B USB sockets? Do I need to solder these 4 wires or use crimp tool?

	How do I find and download the free 2D Engineering Drawings on your products?

	How do I open a 3D model or CAD model on the L-com website if the link does not work properly?

	How do I split out two of the unused lines on my existing cat5 cable to add phone capability without pulling new lines in my building?

	How do I use a flat panel monitor with a standard VGA connected computer?

L-com Policies	How do I return a purchase?

	Is L-com ISO certified?

	What are your shipping and processing fees?

	What are your terms and conditions?

	What is L-com's Cage Code?

	What is L-com's Customer Service Pledge?

	What is L-com's Minimum Order Quantity (MOQ) or Minimum Dollar Amount?

	What is your privacy policy?

Ordering	How do I track my order?

	Is your website secure?

	What if I have a question about my order?

	What payment methods do you offer?

Product Applications	Does part # MWP4BNK work for light switches or is this just for some type of computer/video equipment?

	I want to connect two computers to one printer. Is there a connector or switch I can purchase to accomplish this task?

	Is the SATA cable usable for a 2.5 inch standard Seagate Momentus 5400.2 hard drive ?

	Will either cables TFC6101 or TFCLS6001, stranded, shielded, 26 AWG, work with TDS8PC6 plug?

	Will the TDC053 series and ECF504-8SK coupler work in a 100-Base-T RJ45 product application?

Product Information	How do I look up an item by NIN or NSN?

	How do I search for products or part numbers?

	I am seeking 4x4 handset couplers, or extension cords. Are they even available anywhere?

	I need the connector's measurements for cable model DK238MM series because I have to put it into a 1/2" hole.

	I need to get waterproof cable, connectors, or adapters. What does IP67 mean?

	I want cable assemblies at a special length. How do I request custom length cables?

	What are products that start with SP?

	What is your part # for the RJ45 Keystone Jack (used with the MWP10 series)?

Coaxial Products	Can you tell me the frequency range for the SMA/BNC (e.g. BA29, BA38) and SMA/SMA (e.g. BA23) adapters?

	What does RG316/U mean?

	What is an MCX Connector and what applications are MCX Connectors used in?

	What is the difference between 75 Ohm and 50 Ohm coaxial cable and when should each one be used?

	What is the difference between an SMB plug and SMB jack?

	What is the difference between low loss coax cable and RG style coax cable?

	Where can I get Low Loss coaxial cable for high-frequency applications and wireless systems?

	Why is proper termination of coaxial connectors imperative?

D-Sub Products	Are your Economy 25 Pin D-Sub Molded Cables (CSM series) pass-through cables?

	Is the material that the SD121 Plastic D-Sub Hoods are made of (PBT) Polybutylene Terephthalate Glass filled Thermoplastic?

	What is a DB9 Connector?

	What is cable dia of CSMN25MF D-sub cables?

	What is the CS2N Series Operating Temperature Range?

	What is the current carrying capacity of your CS2N37MM-10 and CS2N37MM-15 cables?

	What is the wire color code for L-com's D-Subminiature cables?

	When the CSNULL9FF cables ship, do they come with dust caps on both ends?

Fiber Optic Products	I downloaded your 3D model of your LC/LC Duplex Fiber Coupler. The As don’t line up with each other. The A on one end lines up with the B on the other end. Is this correct?

	I have an existing copper infrastructure, what's the most cost-effective way to upgrade to fiber?

	I'm trying to connect two male MTRJ connectors using the MTRJ fiber coupler part number FOA-600 and they won't work. What gender is the FOA-600 on each side?

	Is fiber more difficult to install than copper?

	Multimode, singlemode, laser optimized - What does it all mean?

	What is the difference between simplex and duplex fiber optic cable?

	What is the minimum bend radius for L-com model SFOSC fiber patch cords?

	What is the MT-RJ connector? How does it work?

	When I use the fiber configurator, I get items with a strange description like CA ST ST 50DX OFR OR 040 F. What does it mean?

Modular Products	Can Cat 5E cabling be used in Gigabit Ethernet Applications?

	How are your TRD855SIG-15 cables wired? Are they crossover?

	I am trying to find something that looks like the TRD855SIG (double shield, zero halogen, CAT5e with RJ45 plugs) but with stranded conductors instead of solid (and preferably also AWG 26 if possible).

	I need to know what the max material thickness your TDG1026KC6 couplers can fit in to.

	I would like to know the crimp height and tolerance of a L-com Crimper P.N. HTS2500 using a TDS8PC5 Modular plug.

	What is the conductor resistance per meter of TDB4 flat silver satin modular cable?

	What is the difference between a shielded and unshielded modular coupler?

	What is the minimum temperature rating for bulk cable TDB series?

	What is the panel thickness of TDG1026KC5 modular couplers?

	What is the recommended maximum panel thickness for our ECF style couplers with the metal flange?

	What kind of shield do the RS series modular to d-sub adaptor use?

	What kinds of cables work in HDBaseT applications?

	What type of keystone wall mounting styles are there?

	Why is choosing the right type of cabling important for a network?

USB Products	How can I find the USB cable for my camera on your website?

	How do I connect a IEEE-1394 (Firewire) device to the USB port on my computer or laptop?

	How fast is USB?

	Is there a difference for 1.0 or 2.0 on ECF504B-UAB?

	What is a USB cable?

	What kinds of USB peripherals can I connect to my PC?

Video Products	How do I convert VGA to S-Video?

	I have a computer with a single video card and would like to connect 2 monitors, creating a dual-display to increase the area available for computer programs running on the computer. Is this something that is available?

	What is a VGA cable?

	What is Digital Signage and where is it used?

	What is HDMI?

	What is the max length of DVI cable assemblies?

	What is the max length of HDMI cable assemblies?

Technology and Terminology	Are there any maximum recommended lengths for CAT5/5E UTP, CAT5/5E STP, USB, 50 micron fiber or 62.5 micron fiber?

	Can you please provide a table of minimum bend radius values that includes values for CAT5 UTP, CAT5E STP, USB, 50micron fiber optic and 62.5micron fiber optic cables?

	Keystone connector dimensions

	Minimum Lengths for Ethernet Cabling

	Using PMOD4U-1 on a Cat5 Network?

	We have a 100 megabit Ethernet network that is cabled with category-5 in our office...

	What are the basic things a network consists of?

	What is a PL-259 Plug and does L-Com carry any PL-259 products?

	What is Cat5e plenum cable, and why is the plenum cable so much more expensive than PVC?

	What is EIA232C?

	What is the color code for SVGA Cable?

	What is the difference between VGA, SVGA and UXGA, and does L-com sell cables for each?

	Why Use Shielded Cat 6 Cable vs. Unshielded Cat 6 cable?

Wireless

	How are bi-directional amplifiers used?

	How do I choose the right WiFi amplifier?

	How do I use a HyperLink Brand WiFi Antenna?

	What are common WiFi Antenna FAQs?

	What are the key requirements of bi-directional amplifiers for use with the new high data rate 802.11a/g/n radios?

	What are the uses of lightning protectors?

	What HyperLink Brand Antennas are Available?

	What HyperLink Technologies Products Does L-com Offer?

	What is a Ceiling Mount WiFi Antenna?

	What is a Distributed Antenna System (DAS)?

	What is a High Gain Antenna?

	What is a MIMO Antenna?

	What is a Wireless Repeater?

	What is a Yagi Antenna?

	What is an Outdoor CPE?

	What is Polarity?

	What is the exact range of my wireless equipment? (Antennas, Access Points etc)

	What is the main advantage of PoE (Power-over-Ethernet)?

	What makes L-com's HyperLink antennas unique among most Wi-Fi antennas vendors?

	What types of bandpass filters does L-com offer?

	Why are antennas the most important element of a wireless link?

Other	Are L-com’s connectivity products UL Recognized?

	Directions to L-com

	Downloads and Plugins

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