Coax Lightning Protection Basics

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You probably want lightning protection for you coax connection to your communication equipment. A lightning strike in the area can create a potential difference between the center conductor and the cable shielding which will transfer high voltage differential and damaging current flow through your equipment. This can destroy the expensive communication equipment.
For a small price, you can install a lightning protector to protect your equipment. First let’s talk about the basics of what you look for when to select the right lightning protection for your application:
1-All lightning protectors have a frequency range that it will protect. With this lightning protector, it has a range of 698 MHz-2.7 GHz.
2-Connectors for in and out. The most common is N female on the input side and on the output side. They are available in various connectors like N female, N male, TNC, and more. In some cases, the lightning protector has a bi-directional flow so it is reversible.
3-DC Block vs DC Pass lightning protectors.
-DC Pass is for applications that require power to be supplied to the tower by the antenna. This power is a lower voltage DC power allowed to pass through the center pin.
-DC Block will not pass through any voltage through the center pin. Therefore, it will not allow power to be provide though the coax cable for powering equipment.
4-Technology type. Most coax lightning protectors use “Gas Tube” technology. We will explain the how the technology works in another video.
- Gas Tube:
- Is reliable for not allowing the surges to pass through and damage the equipment.
-Does degrade over time depending on number and magnitude of surges. Typically, may last 5 years or a little more before need to replace it.
-Problem is you don’t know when it has degraded and might fail.
-Another problem is that the gas tube protector can get a static electricity build up that can discharge and damage your equipment.
-Coil Inductor:
-Coil inductor is a newer technology that also is an excellent protector of equipment from lightning surges or strikes.
-Does not degrade over time and only fails with a direct or significant lightning strike so you know it is still good.
-Does not get a static build up and release.
-The coil inductor protectors typically cost 30-40% more but give us some significant advantages including:
-Longer lasting lifetime protection or until you have a direct strike
-Peace of mind they are still protecting our equipment over time
-No worries about Static electricity build up and release
Here are a couple of examples of the lightning protectors. Here we have Polyphaser brand protectors. We have the ISB-50LN-C2 which is gas tube technology and the TSX-NFF which is coil inductor technology.
-Bulkhead Mount
-Flange Mount
Grounding when connection to metallic enclosure
-Mfg. recommended additional grounding with 10-gauge ground wire from protector to ground.
Connection to antenna and radio.
Coax lighting protection is very important for protecting your sensitive and expensive communication equipment from all surges that affect the coax cable.
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[@TE5LA-GAMING]

What I learned: The device you put on to protect your equipment can itself damage your equipment. Nice.

[@doccpu7]

Beware beware beware. Got a few that had no gas tubes inside just a couple small screws on the sides. No protection at all. Got ones with flush screws and some labeled 230v with big bulging screws. Tested them with a 0-230v supply with a 20k protection resistor. Big surprise. The flush screw ones were 230v rather than 90v so checked the tubes. Yep 2r230's. Some sold at 90v had 230v tubes. The ones with big screws have double gas tubes rated at 230v but the tubes are meant for a center ground so 460v end to end. Bad news for most radios. So far only 1 of 8 have had what they were sold as. Beware the big bulging screw ones and check the small inset screw ones.

[@johnwuethrich5064]

so is it assumed that the enclosure is grounded and the case of the arrester connects to ground via the enclosure? or do these not need ground?

[@freddieb4268]

Some visuals would have been pretty helpful.

[@BenEverett1]

I can't find anything online called a "Coil Inductor" Lightning Arrestor. The only thing I can find are the gas tube ones.

[@JoeHasGotToGo]

So for lightning protection for an antenna mounted on a home roof chimney for a CB or HAM radio (transmitting and receiving), what model(s) do you recommend?

[@nojiratzlaff4388]

Alpha-Delta TT3G50U-HP

[@bstarkey54]

Went to your site and can't figure out or find the product you were describing. A link would be great if you could. Thank you. Using Coax to a GMRS roof mounted antenna. And what should it be ground to?

[@mostaphamakine129]

do we need earthing for that lightining protection ?

[@joboring8397]

yeah

[@dougelick8397]

Yes. It's absolutely critical, yet this video completely ignored that.

[@ReefMimic]

So what brand is coil inductor? To bad you didn’t provide links

[@glenwillems4925]

U left out the part where the lightning protector should b grounded

[@dougelick8397]

You neglected to mention the most important part - *Grounding*

[@cranedaddy678]

I had a lightning arrestor before the video now idk what I have.

[@Hex-Mas]

Can I just use a wire and stake it in the ground?

[@doccpu7]

you have to have it near the lightning protector or a ways from the radio. the closer the protector is to the radio and from the ground allows for bigger spike at radio.

[@Dallas-Rife-UDX-347-Tennessee]

Is this Chuck Liddell before his MMA days 🤷🏼‍♂️🤔

[@devbandy9004]

haha..... 😂

[@witnesstruth7457]

Where can I purchase a coil inductor surge protector, for RG6 coaxial cable?

[@jamescopeland5358]

Thx

[@RSPSupply]

Any time

[@erpepe8394]

Do I need a lighting protector for an antenna I have on my terrace? I live on an apartment, so in theory the building should have a lightning arresters already on the top right?

[@doccpu7]

lightning is a big current pulse. It sends out a huge magnetic wave. It produces spikes in every wire laid in the direction of the bolt. I have had sparks jump from my coax to grounded items while just laying on the bench when the strikes were a mile or more away. It would be a good idea to put lightning protection on any long coax or lines connected to big antennas. Cable tv lines tend to have lightning protection where it connects to the building. A long coax connected to a receiver is just a big antenna.

[@pyancey0]

Woot woot Inet-II cameo - To anyone watching these radios are officially EOL everyone make sure you checkout the Orbit NX9!

[@19.RYAN.82]

Too much fuckin talk..no visual.

[@HaikHakopyan]

Dude your just talking. This is a video where are visuals.

[@ut561]

WHY TOO TECHNICAL, i just want to know how to protect my cable modem, that's it, not the history of the world

[@MrMikesMondoVideo]

Too technical? History of the world? LMAO This video is about as elementary as It gets. If you want to learn how to properly protect any type of coax equipment, you're going to need more than a 4 minute video, and it'll be orders of magnitude more complicated than this.

[@MrMikesMondoVideo]

@goinghomesomeday1 LMFAO I don't know what's funnier... what you don't know on the topic... you thinking I was responding to you because you don't know how to use KZbin, you thinking I'm the author of the video, or you being clueless to what you're laughing at. Funnier still is you thinking the creator the video needed to get to a particular point, not comprehending that's not the objective of the video.

[@devbandy9004]

There is nothing wrong, he is a professor. He is saying what we don't know