New Product: Band Pass RF Filters for Positive Train Control, and Other RF Networks

NexTek, LLC. has been a World -Class leading designer, developer, and manufacturer of standard and custom coaxial surge protectors and high current AC/DC EMI filters for Commercial, Medical, Avionics, SATCOM, Power Supply, Military and Government markets for over 30 years, and proudly announces a new product series for immediate release.

The “BPF Series” is a band pass filter specifically designed for railroad positive train control, PTC networks.  These units provide optimum filtering; sharp cutoff and notched response characteristics.  These filters reduce or eliminate unwanted interference from co-located radios, internal (on-board) or external, to increase the system’s reliability.   NexTek’s filter solutions incorporate a bandpass filter with Type N connectors centered at 160, 220, 460 & 900 MHz.

In addition to providing high performance filtering to remove unwanted RF Energy from a coaxial line, these filter designs also incorporate high performance surge/lighting protection within the same package.  This type of combination solution will ensure that two types of unwanted energy are not allowed to pass freely by the NexTek BPF Series of Bandpass Filters w/ Integrated Lightning Protection.

These new products further demonstrate NexTek’s commitment to growth and innovation while maintain and delivering the highest quality products to our customers.

For additional information please contact your local sales representative, or get in touch with us directly!

Press Release [.PDF]


Datasheet Links [.PDF]

BPF 160 – 160MHz Pass Band

BPF 220 – 220MHz Pass Band

BPF 460 – 460MHz Pass Band

BPF 900 – 900MHz Pass Band


NexTek Announces New Product – Type N Sampler Port

Westford, MA – – NexTek, LLC. has been a World -Class leading designer, developer, and manufacturer of standard and custom coaxial surge protectors and high current AC/DC EMI filters for Commercial, Medical, Avionics, SATCOM, Power Supply, Military and Government markets for over 30 years, and proudly announces a new product series for immediate release.

The “RF Sampler” is a valuable device for monitoring RF Signals, carrier RF imbalances and power outs, noise, and interference. Ideally, the device should be integrated permanently into the cable run, so that it can quickly assist with troubleshooting should the need arise. This unit can also be utilized while passing DC on the center pin. Because the monitoring device is permanently mounted, it allows a technician to easily diagnose many cell-site issues without interrupting service.

Features

  • Type N Connectors – Male to Female

  • DC – 3.0GHz Pass

  • Integrated SMA Sampler Port for Safe Measurements

    • Measure Signals During Radio System Operation @ -38dB between 700-900MHz
    • Measure Signals During Radio and System Operation @ -30dB at 2.0GHz

This new product further demonstrates NexTek’s commitment to growth and innovation, while maintaining and delivering the highest quality products to our customers.

For additional information please contact your local sales representative, or get in touch with us directly!


Links

SAMPLER Datasheet (.PDF)

Sampler Press Release (.PDF)



New Line of COTS DO-160G Avionics Protection for RF Lines

NexTek is proud to announce the release of a new line of standard products, engineered specifically to protect Coaxial RF lines and systems against Lightning Damage as required to meet DO-160G, Section 22.

Available in a variety of pass bands, packages, and with multiple connector options; these designs are based on years of experience providing solutions to the Aerospace and Avionics sectors.  When compact size and light weight are critical, but effective and serviceable/replaceable protection is required;  The FPD series of lightning protection devices can meet all of these performance points, in a highly reliable and robust package.

 

Example FPD Package

 

Standards Met

D0-160G, Section 22 – All Waveforms and Test Levels

MIL-STD 461G, CS 117 – All Waveforms and Test Levels

Options Available

Connectors – Type N, TNC, SMA, 2.92mm, MCX, MMCX, and others available

DC Power – DC Pass or DC Short/Block Options available

Frequency – Pass Bands between DC and 18GHz available, across the entire range of designs (not within a single design.)


Link(s)

FPD Series Family Page

FPD Series Family Datasheet (.PDF)

DO-160 Avionics Protection – Industry Page



NEW RELEASE: Wideband Lightning Protection – DC to 12.5GHz with Type N Connectors

NexTek is proud to announce the availability of a new ultra-wideband surge protection device for Radio and RF communication systems. With a compact design, an extremely wide pass band, and the ability to pass DC power in addition to RF energy this unit is well-suited for a multitude of bands, applications, and systems that require high-performance lightning protection in a compact package.


Features

  • Wideband – DC to 12.5GHz
  • Compact – Ultra-Small Footprint
  • Robust – High Performance Gas Discharge Tube
  • Weatherproof – IP68 Dust and Waterproof
  • Value – Perfect for a wide array of uses, at a good value

The PTCONMONF20G [male-female] and PTCONFONF20G [female-female] units provide a single device that can be used to protect most RF Applications with a single solution.  This should allow users with a wideband or multi-band system, or users who have a wide variety of pass bands available across their products or systems, to use a single arrestor and reduce P/Ns, stocking costs, etc.

This unit is also perfect for users who need Type N protection but have no room to add a bulky arrestor.  In this case, simply replace a normal un-protected feedthrough connector with this protected version…and you’ll have integrated high-performance lightning and surge protection with virtually no space or weight penalty!

 

Product Page (datasheets can be found here)

 


Contact NexTek or your local NexTek Partner directly for more information, samples, and a quote!

As we continue to expand our product offerings, look out for more new Product Releases!


 


New GPS Surge Arrestors – Type N Units Available Now, TNC Units Available Later in 2018!

We are proud to announce that we are releasing two new “D Series” Fine Protection (FPL Series) devices for protecting GPS and other Global Navigation Band Receivers.

These products will completely replace the existing “B Series” Fine Protection Devices for GPS applications, the FPLNFNFBxxx and FPLTFTFBxxx units, in the near future.  Form, Fit, and Function details remain the same between the existing and new devices in order to allow for a simple and painless transition for existing users.

The Type N version is available now, and the TNC version will be available later in 2018;


Click the Product Photos below to learn more about each device


Type N – FPLNFNFDxxx


TNC – FPLTFTFDxxx


If you have any questions, comments, or concerns… Just get in touch with us directly!



Product Bulletin – Integrate RF Surge and Lightning Protection Without Paying a Size or Weight Penalty!

The Neverending Quest For Size Reduction

As with most technologies, RF and Wireless system design is an ever-changing and shifting world.  As certain technologies or RF bands become popular, others fade away.

However, the one ever-present force on the industry is the steady, but relentless, push towards smaller size and better integration over time.

Lightning/Surge Protection at the PCB Level?

Here at NexTek we understand the desire to bring things into the box, or even all the way onto the Radio PCB… However, we also know that Lightning Transients contain too much energy to deal with safely at the PCB Level… Trace widths, ground place areas, and the components themselves all become limiting factors that will prevent complete and effective protection.

Given this reality, the last place where it is reasonable and safe to protect against Lightning or other Surge events is at the radio’s box or chassis level.  By replacing the normal I/O connector with a protected version, designer can ensure that they have high-performance protection without paying any significant size or weight penalty.  As long as the radio’s chassis is grounded well, the bulk of the Transient Energy will be drained safely to ground before entering the box and/or the PCB itself.

It may still be advisable to install some simple protection on the PCB, but only for final clean-up…Something like a small Protection Diode coupled with a DC Blocking Capacitor (if possible for your application) would provide plenty of protection against any residual energy that gets past the Protected I/O Connector.

Maximum Protection in the Minimum Amount of Space

Below, you can see an array of our Ultra-Compact protection options…  They all include high-performance lightning protection, and are available in a wide variety of connector configurations on both the Input and Output side.compact-arrestors

Outside Connector Options – Type N, TNC, SMA

Inside Connector Options – SMA, MMCX, RG188, RG316, and more!

Threat Types – Lightning, Static (ESD), and EMP


Learn More

Ultra Compact Protection – Home Page

Ultra Compact Protection Product Bulletin – Post



Extremely Compact Lightning Arrestor Ideal for Mounting Inside Radio Chassis – New Product Release – PTCTNFMMFxxS

We are excited to announce the release of a brand-new Coaxial Arrestor design, the PTCTNFMMFxxS series of compact GDT arrestors.  Just like other examples of NexTek’s compact arrestor options, this unit is perfect for chassis-mount applications where space is at a premium…But at the same time, it provides heavy duty, military grade protection for your equipment and will not cost much more than a high-quality connector!

PTCTNFMMFxxS Photo

If you are looking for coaxial protection that does not cost you any more space and weight than absolutely necessary, perhaps because you’d prefer to integrate protection into the Radio Chassis itself, then you really have to check out this new design!

The PTCTNFMMFxxS-series coaxial arrester provides effective protection in an extremely compact form factor, and MMCX connectors for the lowest-profile connection.

PTCTNFMMFxxS OutlineAvailable with a TNC (f) bulkhead and MMCX (f) connectors, in a range of Protection Voltage/RF Power ratings.  See below and explore the datasheets to learn additional details!


Features:

  • DC to 6GHz Operating Band
  • Excellent Response and Residual Energy Reduction
  • Compact TNC to MMCX Bulkhead Protector
  • Low VSWR and Insertion Loss
  • Multi-strike, Rugged and Waterproof
  • Available in Multiple Protection Voltages: 90, 150, and 230V

Product Page Links:

PTCTNFMMF09S

PTCTNFMMF15S

PTCTNFMMF23S


Learn More:

PTCTNFMMFxxS Datasheet (.PDF)

PTC Series Home Page

Coaxial Arrestor Home Page



Compact DC Block Arrestors For Radio Protection – Featured Product

We have added NexTek’s new coaxial arrestor product to the website and product selection tool, and you can now find information about all four variations!

The PTI series provides effective protection in an extremely compact form factor, and includes a series capacitor to block DC energy and further reduce the amount of energy that gets past and flows into the radio being protected.  This series capacitor guarantees effective protection from the Gas Discharge Tube front-end by eliminating the need to rely on or coordinate with the output-side capacitor of your radio.

NexTek’s SurgeGuard™ PTI series of DC-Blocked lightning arrestors operate at frequencies up to from 2Mhz to 2GHz.

Available with a TNC (f) bulkhead and SMA (f) connectors, in a range of RF pass band and RF Power ratings.  See below and explore the datasheets to learn additional details!


Features:

  • Excellent Response and Residual Energy Reduction
  • Compact TNC to SMA Bulkhead Protector
  • Low VSWR and Insertion Loss
  • Multi-strike, Rugged and Waterproof

 

Product Page Links:

PTITNFSAF1502

PTITNFSAF1504

PTITNFSAF1506

PTITNFSAF1508


Learn More

Press Release – PTI Series

PTI Product Family Page



New 300 Amp High Current Filter – Compact & Rugged EMI Filtering

(Westford, MA) NexTek, LLC has launched the HPR300 series of High Current Feedthrough EMI filters, built around a brand new design.  Utilizing ruggedized internal construction techniques, the HPR300 series is designed to withstand the most extreme environments and requirements while providing consistently high performance noise reduction.  Designed to meet EMI or RFI standards related to Emissions or Susceptability, high current filters can be used across many industries and applications.  Feedthrough filters are used in high current power feedlines for Lasers, Medical Imaging Devices, Radars, Power Conversion, Vehicles, Military Equipment and many other industries.  NexTek’s high current feedthrough filters are used to provide effective noise reduction to >1GHz.

HPR300 Photo

In addition to being more compact than any 300Amp rated filter, the HPR300 design incorporates a number of innovations that put it ahead of similar products…including NexTek’s other filter options!

  • Extremely Compact Design – Short Overall Length
  • Rugged Internal Construction – Extremely Rugged and Well-Suited for Any Environment
  • Bolt Attachment Method – For Maximum Space Savings, There Are No Fixed Studs
  • Bulkhead Mount O-Ring – For effective through-sealing of the bulkhead penetration
  • Wide Range of Voltage Ratings and Capacitance Values – 100Vdc to 1000Vdc+, 125Vac to 250Vac+

Drawing on NexTek’s 20+ Years of experience in providing high current EMI filters to various commercial and military application all over the world, this new design is the most advanced feedthrough filter NexTek has ever designed.  The HPR300 family of rugged and compact feedthrough filters is ready to provide high performance filtering and an extremely long lifetime to any application.

See the HPR300 Product Page HERE.