Featured Threat Type – Lightning Protection for Radio and Communication Lines

Although probably our best-known type of solution, we wanted to take the opportunity to start off 2017 by highlighting Lightning Protection for coaxial RF applications.  Fundamentally, the purpose of these devices is to provide high-performance Lightning & Surge Protection for Radio and Electronic Systems and their Users.  This can be as simple as protecting a radio itself, or as complex as providing protection to the entire platform or system the protection is being installed upon.

Simplified Diagram Showing Typical Wireless Communications Installation – Potential Arrestor Placement Areas are A, B, and C.

You can see the common areas where protection is installed called out as A, B, and C in the diagram above.  This is an over-simplification and does not exactly represent most actual installations, but it does a good job representing the various ways and reasons that a coaxial cable can be installed outside and therefore represent a potential ingress path for Transient Lightning Energy.

Wireless Installation - Building Rooftop

Lightning damage is a leading cause of radio damage in many locations and systems around the world.  Anywhere a coaxial cable or radio antenna is run outside in an exposed location, there is a potential need for an arrestor/protector on the line as well.

While we do specialize in coaxial connectorized solutions where RF Energy must be passed during normal usage, we also do have many years of experience in designing and consulting on all sorts of Surge Protection devices… From Lightning Arrestors for AC, DC, or Serial/Comms lines, to providing multi-faceted protection that is as effective against Static/ESD and HEMP/NEMP energy as it is against standard Lightning transients.


Lightning – Threat Type Page

Coaxial Lightning Arrestors – Product Family Page

Technical Resources – Technical Note, Articles, and More Info

New Selection Tool – One-Page Coaxial Arrestor Selection Guide!

Are you looking for a quick and easy visual aide to assist in selecting the proper coaxial lightning and surge arrestor for your application?  Are you wondering which NexTek arrestor families offer a solution with the right combination of RF Pass Band and Connector Type to meet your needs?

If so…you are in luck! We have just made a new single-page visual selection guide now available on nextek.com!  This handy .PDF version contains active hyperlinks to each Product Family page on nextek.com, so that you can go directly there to learn more and start browsing!

Visual Product Selection Guide – Coaxial Lightning Arrestors by Connector Type and Frequency Range (.PDF)

Arrestors by Frequency and Connector Type


See Also

Also, remember that we have a Dynamic Product Finder tool for our Coaxial Arrestor line.

Coaxial Arrestors – Product Family Home Page (link)

Featured Transient Threat Type/Application: Static [ESD] Protection for Coaxial RF Lines

Today’s post highlights a type of Transient Threat that NexTek arrestors provide protection against.  Although Lightning energy is the primary source of damage to coaxial lines and systems where they are used, there are also other types of Surge Energy that can cause damage to electronics.

Baytems_ESDzap_and_EUTESD, or Electro-Static-Discharge, discharges can reach many kilovolts in potential and therefore could cause significant damage to most unprotected electronic equipment.  Although the total energy contained within an ESD discharge is relatively low, it is the fast risetime and kilovolt+ voltage potential that are the main causes of damage.

For any application or system which uses coaxial transmission cables and connectors, there is likely to be some risk of direct human contact to an “exposed” (i.e. un-mated) coaxial center pin which in-turn makes ESD discharges directly onto the center pin quite likely.  In this case, protection must be installed or afforded in order to ensure the continued performance of a given system or piece of equipment.

When examining a specific application and quantifying the ESD threat level, there are two main paths to travel down:  One, the ESD threat may be given by a specific Industry Standard document (MIL-STD, IEC, IEEE, EN, etc) according to a judgement made upstream in the overall program…or an approximate threat level or desired protection level based on the program-level design requirements.

See below for a table which lists some ESD Requirements which may apply:

Standards that require ESD testing include:

  • ISO 10605
  • Ford EMC
  • ISO/EN 61000-4-2 needed for the CE mark
  • IEC 61000-4-2
  • ISO TR10605
  • MIL-STD-883
  • MIL-STD-1512
  • GR-78-CORE
  • RTCA DO 160
Learn More about Electro-Static Discharge here:  Threat Type Page – Electro Static Discharge
Learn More about NexTek’s Coaxial Surge Arrestors here:  Coaxial Surge Arrestors

Application Spotlight: Protecting CCTV, Cable TV , and Satellite TV Lines

As an industry-leader in Coaxial Lightning & Surge Protection solutions, NexTek offers a wide array of products that cover a range of applications.  However, therecable-tv is one type of coaxial cable that can be found in almost everyone’s personal lives!

The 75ohm coaxial video cable that is used in most homes and businesses for transmitting television and video signals!  Whether the original video feed comes from a Cable company, a Satellite Dish or Antenna, or a CCTV system…any video cables that run from outside-to-inside are a potential entry path for damaging lightning surge energy.

In order to adequately protect 75ohm F-Type transmission lines, NexTek has developed a special product which is designed to meet or exceed the surge capabilities of the widely-used RG-6 cable type.  In other words, the PTC-F02 arrestor is designed to outlast the cable it is connected to, and should only require replacement or service once there is severe damage on the “exposed” side cables that would prevent proper operation anyway!

F-Type Arrestor - Dual Mount Configuration
F-Type Arrestor – Dual Mount Configuration

Available with single- and dual-configuration mount brackets, these arrestors are also designed to be nearly invisible to normal video signals during >99.9% of its lifetime.  Most available surge protection for TV cables are so poorly design that they create massive signal losses when they are installed…Who needs protection if it means that you cannot watch your TV once it is installed?!

In addition, the PTC-F02 design utilizes nickel-plated brass and other high quality materials for maximum lifetime and longevity in any environmental conditions.

As with any of NexTek’s coaxial surge arrestor solutions, the PTC-F02’s balance of robust surge ratings against excellent RF thru-performance in a high quality package makes this product the very best available for any coaxial TV application!

Learn More Below:

Application Note: Coaxial Surge Protection for Cable, Satellite, or OTA TV Cables (.PDF)

Technology Page: Cable, Satellite, and CCTV Systems (link)