Proxicast Coaxial Lightning Arrester/Suppressor with PL-259 & SO-239 (M/F) Connectors – Pro-Grade Coax Cable Surge Protector for HF, VHF, UHF, CB, Ham, Two-Way Radio and Other Antennas (ANT-234-002)
$19.95
Price: $19.95
(as of Feb 13, 2026 09:07:09 UTC – Details)
Product description
Proxicast Pro-Grade Coaxial Lightning Arrester for 0 to 3 GHz (UHF-Male/UHF-Female)
230V Discharge Voltage for Maximum Protection
This gas discharge tube lightning suppressor features wide-band operation from DC to 3 GHz with low RF insertion loss, making it ideal for HF, Marine VHF, UHF, CB, Amateur Radio (Ham), P25, GMRS, LMR, Two-Way and other radio system antennas. It absorbs 2.5 times the energy of 90V arresters.
UHF-Male to UHF-Female In-Line Arrester
With UHF-Male (PL-259) and UHF-Female (SO-239) connectors, the arrester connects inline with your existing coax cabling. It passes DC for applications such as remote amplifiers and LNAs. Both ports are equally protected – it can be installed in either orientation. The housing ground lug provides superior grounding.
Protect Equipment, Structures & Personnel
Coaxial lightning suppressors should be installed between outdoor antennas and radio equipment to protect from high-energy electrical pulses carried through the coax cable either from a direct or nearby lightning strike. Arresters should be installed outdoors as close as possible to the equipment to be protected, typically at the point where the coax cable enters the building.
Key Features Bi-Directional Operation Wide Band Frequency Range 230V Discharge Voltage Replaceable Gas Discharge Tube Corrosion Free Nickel Plated Brass Construction Low VSWR & Signal Attenuation Grounding Lug
What Makes Proxicast Lightning Arresters Pro-Grade?
Frequently Asked Questions
How does it work? Gas discharge tubes (GDT) safely divert excess voltage from surges and static buildup on an antenna and coax cabling to ground by becoming conductive above the threshold voltage. After the surge passes, the GDT automatically resets to be non-conductive. Where do I install it? Install arresters close to the protected equipment, ideally outside where the cable enters the building. Proper grounding is critical: connect the ground lug to your main electrical ground system or a dedicated ground rod with a short, heavy-gauge copper wire. Consult an electrician if unsure. Can it be installed outdoors? Constructed with a nickel-plated brass body, this arrester offers excellent corrosion resistance and durability for long-term outdoor use in harsh weather. Proper installation, including weather-sealing connections, is crucial for its longevity. Can I attach it to an antenna? Yes. However, the purpose of a lightning arrester is to protect down-stream equipment, buildings and personnel from dangerous electrical surges which can be caused by static electric energy induced into the coax cable from nearby lightning activity. Min. ground wire gauge to use? A minimum of #10 AWG (#8 is preferred) copper ground wire should be connected to a suitable earth ground point like a building’s electrical panel ground rod, a water utility pipe entering the building, or a new copper ground rod driven into the earth. Consult local building codes for other grounding requirements and safety practices. Will it affect my signal? This arrester is engineered for low insertion loss (<0.2 dB) and low VSWR (<1.2:1), minimizing signal degradation. While minor loss is inherent, it should be negligible. To minimize loss, ensure tight, clean coaxial connections and use high-quality, low-loss cable and weather-seal all outdoor connections. When do I replace the GDT? The gas discharge tube (GDT) is a sacrificial component designed to absorb large surge events. We recommend replacing the tube if you suspect a direct strike or experience loss of signal. Otherwise replace the tube every 3-5 years as preventative maintenance since tubes can degrade from multiple discharges. What is “DC Pass-Through”? “DC Pass-Through” means the arrester allows direct current (DC) power to travel through the coaxial cable. This is crucial for active antennas or Low Noise Amplifiers (LNAs) powered over the same cable. Without DC Pass-Through, such devices would not power on.
Specifications
Frequency Range 0 – 3 GHz Impedance 50 Ohms Discharge Voltage DC 230V Max Power 200 W Max Discharge Current 10 kA (8/20 μs) VSWR ADGP < 1.2 Insertion Loss < 0.2 dB Connectors UHF Male (PL-259) / UHF Female (SO-239) Connector Body Nickel Plated Brass Ground M4 Screw Lug – 8 AWG Max Wire Diameter Dimensions 2.4 x 1 in (60.6 x 25 mm) Weight 4.5 oz (127.5 g)
Be Safe!
Install arresters away from combustible materials.Weatherseal the coax connections to the arrester.You must connect the ground screw of the arrester to an earth ground such as:The ground rod tied to your building’s electrical panel.A water utility pipe that enters the building.A new copper ground rod that you drive yourself.Use #10 AWG (or thicker) copper ground wire between the arrester and ground point.Consult your local building code for other grounding and safety requirements.
You May Also Need
UHF UltraFlex Coax Cables
The wrong cabling can wipe out antenna gain. Use only low-loss 50 Ohm coax like our ANT-141-034 series ultra-flex cables available in multiple pre-made lengths.
J-Max Antenna Mounting Arms
Proxicast’s professional grade ANT-800-JP3 J-Max adjustable antenna mounts feature extraordinary strength and premium materials. Available in stainless steel and rust-proof aluminum, these mounts will last a lifetime.
Coax Weathersealing Silicone Tape
If moisture gets into the cabling it can create intermittent shorts and permanent damage. Seal all outdoor connections with our ANT-900-002 Pro-Grade Coax Silicone Sealing Tape.
DESIGNED FOR VHF, UHF, TWO-WAY, AMATEUR / HAM and CB RADIOS – Features UHF Male PL259 & Female SO239 Connectors
BI-DIRECTIONAL PROTECTION – High Quality Construction – Outdoor Rated – Suitable for In-Line Use
VERY LOW RF INSERTION LOSS (Signal Attenuation) – 50 Ohm Impedance – DC Pass-Through
230V GAS DISCHARGE TUBE – Coaxial Cable Surge Protector with Multi-Strike Capability Shunts Damaging Surges, Transients, and Lightning Energy to Ground
CONNECT COAXIAL SURGE PROTECTOR to Antenna Signal Feedline and Earth Ground
10 reviews for Proxicast Coaxial Lightning Arrester/Suppressor with PL-259 & SO-239 (M/F) Connectors – Pro-Grade Coax Cable Surge Protector for HF, VHF, UHF, CB, Ham, Two-Way Radio and Other Antennas (ANT-234-002)
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Ray –
Well made, beautiful construction.
This lightning arrestor is well made but is limited to about 350W SSB. Above that and it will conduct.The GDT that comes with the arrester is rated at 230V. To use this product with high power the GDT should be changed to a higher voltage. A 350 or 400V GDT will work to >1KW. The cover for THE GDT does not have an O ring so a piece of rubber tape should be placed over the opening to waterproof it.This is an excellent lightning arrester at a bargain price!
KenDaWindowMan –
Great Product and Great install
So far so good. Checked inside to make sure everything was in place and not lodged in a corner.Install waz a breeze and total time to install them into my pre existing hook up along with running the grounds to the outlets ground took about 40 minutes max including finding tools.Shouldnt be hard as long as you look up your connector ends on your cables to make sure everything will hook up correctly.1 being end type, being the tiny tiny SMA or F type or Standard coax or that HUGE connection called N type.2 being the Male or Female hookup you will need or maybe a conversation end separately to be able to hook it up.Once your locked in on what you need its easy from there on out, couple or pliars and flat head screw driver making sure not to overtighten the ground screw.
Kevin C. O’Neil –
Product is well made
Product is well made and hopefully I’ll never need to use it. Installation was easy after trimming the center copper wire of the antennae cable that I attached to it (the coax cable was left with the center wire too long making it difficult to attach to the device).
Fred Fanning –
Great Arresters
This arrester is well-made and easy to install. They are just what I need to prevent lightning strikes from damaging my radio equipment.
Dennis Bell –
Easy to install protection for coax connected electronics
This is a professional lightning arrester which is easy to install and has replaceable gas tubes so if in blows to protect the equipment, it can be put back into service with a new tube.The only problem I had was not with the product but with big A. Ordered the correct product and was sent the wrong one not once, but twice! Resorted to communicating directly with Proxicast who took back the incorrect item and sent the correct one. Tried to tell big A what the problem was but it didn’t work.5/1/2024 Update:Received the correct unit from Proxicast which was nice! Out of curiosity, I opened the port where the replaceable gas tube is located. When I did, it looked like there was no tube in the unit. Contacted Proxicast to let them know along with a picture of the missing tube. Right away, they apologized, said they would look into the problem, and sent some replacement tubes right away.After examining the picture I sent, they determined that the gas tube had actually fallen inside the unit so it was not missing after all. Since I didn’t know what I was looking for and saw the empty hole, I assumed it was missing. I was able to retrieve the tube (not very easy) and now I know what can happen if you are not careful how you open it up.I have since suggested possibly some kind of plastic insert to keep it from falling into the unit or a “read me first” to warn of the possibility of the tube falling inside the unit if not opened carefully.Though I have offered to return the replacements, Proxicast has said I could keep them.This is -top notch- customer service which is very refreshing to find in a company where many would have ignored the problem all together.The take:If you need to remove the gas tube from the unit, place the unit on a flat surface with the port facing up and be aware that it could possibly fall inside the unit.This is a vendor you can trust that supplies a very good product and will respond to you if you have any problems.Buy this product if you need a good lightning arrester for your satellite cable feed.
Rodney Warlick –
Well made.
Just ordered and installed, has some weight to it and appears to be well made, came well packaged and delivered promptly.End connection were well protected and has a good ground connection.
Ronaldo Rodriguez –
A solid block of insurance for our router.
This device is solidly built, sleek, cold aluminum and the coax cords fit perfectly. We recently had a lightning storm and this along with a protected power adapter, the internet router was safe and sound.Only downside is that this will cause interference in the audio of landline telephones connected to the wifi router for use with VoIP calling.
T-Grind –
Don’t wait until a Lightning Strike fries your Cable Modem and Router!
We recently went back to owning our cable modem/Router after renting a modem/router for several years. But we were worried that a lightning strike could fry our modem/router like it did before we went to renting. SO a quick search on Amazon led us to this Lighting Arrester. It’s size makes it unobstructive in our cable box. And for around $20, it both a great value and a good investment in protecting our internet tech. We’ll wait and see how well it protects against lightning strikes when the next storms happen.
Norm Courage –
Easy to install, hopefully it works as advertised if my antenna is ever hit
Amazon Customer –
Did not fit my standard RG-6 Coaxial cable. The center conductor of the coaxial cable is to thick to fit into the adapter. I checked the diameter of the coaxial center conductor with a micrometer and it was within the specs for a RG-6 cable. Apparently I read there that not all of these central conductor cables are solid copper. Some are steel with copper coating and they have a much smaller diameter. It could be that this adapter is meant for that type of cable???