--- product_id: 184732169 title: "Eightwood RG400 RF Coax Cable M17/128 Double Shield Coaxial Cable 40 feet" brand: "eightwood" price: "498.62 DT" currency: TND in_stock: true reviews_count: 13 url: https://www.desertcart.tn/products/184732169-eightwood-rg400-rf-coax-cable-m17-128-double-shield-coaxial store_origin: TN region: Tunisia --- # Max Frequency 12.4 GHz High-Temp Resistant FEP Jacket Double Silver-Plated Shielding Eightwood RG400 RF Coax Cable M17/128 Double Shield Coaxial Cable 40 feet **Brand:** eightwood **Price:** 498.62 DT **Availability:** βœ… In Stock ## Summary > πŸ“‘ Elevate your signal game with Eightwood’s RG400 – where power meets precision! ## Quick Answers - **What is this?** Eightwood RG400 RF Coax Cable M17/128 Double Shield Coaxial Cable 40 feet by eightwood - **How much does it cost?** 498.62 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/184732169-eightwood-rg400-rf-coax-cable-m17-128-double-shield-coaxial) ## Best For - eightwood enthusiasts ## Why This Product - Trusted eightwood brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Versatile Connectivity:** Compatible with amplifiers, GPS, routers, and satellite antennas for seamless integration - β€’ **Premium Double Shielding:** Silver-plated copper double braid ensures superior interference protection - β€’ **Durable Heat-Resistant Jacket:** FEP outer layer withstands extreme temperatures for reliable outdoor/indoor use - β€’ **Precision Engineered Conductors:** Silver-plated copper inner conductor and PTFE insulation optimize conductivity and signal integrity - β€’ **Ultra-High Frequency Performance:** Supports up to 12.4 GHz for crystal-clear signal transmission ## Overview The Eightwood RG400 RF Coax Cable is a 40-foot, double-shielded coaxial cable engineered for high-frequency applications up to 12.4 GHz. Featuring silver-plated copper conductors and a heat-resistant FEP jacket, it delivers exceptional signal integrity and durability for both indoor and outdoor use. Ideal for professional-grade connectivity in amplifiers, GPS systems, routers, and satellite antennas. ## Description Founded in 2012, Eightwood specializes in developing and manufacturing RF antennas and connectivity accessories for a wide range of applications, including WiFi, 4G, ham radio, FM AM, automotive stereo, and more. Count on us for high-quality products, timely technical advice, and efficient after-sales service. Let us provide you with superior connectivity solutions. ## Features - RF double shielded RG400 coax cable, 40 feet - Good conductivity and signal transmission | Superior shielding performance | High-temperature resistance | Max. Operating Frequency:12400MHz - Material--Inner conductor: silver plated copper | Insulator: PTFE | Outer conductor(shielding) : silver plated copper double braid | Jacket: FEP - Diameter-- Inner conductor: 19*0.203mm | Insulation:2.95mm | Outer conductor( shielding):3.95mm | Jacket: 4.95mm - Impedance:50 ohm | Package Includes: 1x 40 feet RG400 cable ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07WJG7XF6 | | Best Sellers Rank | #25,794 in Electronics (See Top 100 in Electronics) #130 in Coaxial Cables | | Brand Name | Eightwood | | Cable Type | Coaxial | | Color | pink | | Compatible Devices | Amplifier, GPS Navigation System, Modem, Router, Satellite Antenna | | Connector Gender | Female-to-Female, Male-to-Female, Male-to-Male | | Connector Type | RF Connector | | Customer Package Type | Long box | | Customer Reviews | 4.5 4.5 out of 5 stars (195) 4.5 out of 5 stars | | Frequency | 12400 MHz | | Indoor Outdoor Usage | Indoor, Outdoor | | Item Shape | Round | | Manufacturer | Eightwood | | Maximum Voltage | 1900 volts | | Model | ZRG400-100 | | Number Of Items | 1 | | Number Of Pins | 2 | | Other Special Features Of The Product | Braided, Heat Resistant | | Outer Material | silver plated copper double braid | | Part Number | ZRG40040 | | Recommended Uses For Product | Base Station, Antenna extension | | Specification Met | Nom | | Unit Count | 1 Count | | Upc | 790404665768 | ## Product Details - **Brand:** Eightwood - **Cable Type:** Coaxial - **Compatible Devices:** Cable modems, satellite dishes, network routers - **Connector Type:** Coaxial - **Special Feature:** Braided, Heat Resistant ## Images ![Eightwood RG400 RF Coax Cable M17/128 Double Shield Coaxial Cable 40 feet - Image 1](https://m.media-amazon.com/images/I/71IjkeHO6+L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Would you have some recommended sma male connectors for this rg400 cable ?** A: Well in my case I use SILVER 259 connectors because they work the best and also the SILVER reducers. If you buy the 259's Don't come with the reducers so you'll have to search them too. **Q: what is power handling at ham hf freq?** A: I generally only use RG400 for building short jumpers, RF chokes and baluns. I've run 5KW through these with no problem, but I'm not certain about the exact specification. I started using this after disassembling a DXE 5KW balun and saw that it is what they used. **Q: What is the velocity factor of this coaxial cable?** A: I'm not certain for this manufacturer, but almost all RG400 is around 70% (Β±0.5%). I typically only use this for building indoor RF chokes, baluns and short jumpers. It will handle 5KW with no problem and is great for minimizing RFI. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent coax! *by on Reviewed in the United States August 20, 2026* RG400 has one massive advantage compared to "conventional" coax cables: The Teflon dielectric makes it impossible to botch the installation of a conventional solder on PL-259.Most conventional coax cable use solid or foam polyethylene dielectric that melts easier than I'd prefer, and that's easy to do when soldering the shield to the body of the connector.In order for the solder to properly adhere, the entire body of the connector must get fairly close to the solders melting point, and that heat softens PE dielectrics. If the connector is not properly immobilized, the center conductor can migrate through the softened dielectric, come into contact with the connector body - creating a short circuit that RUINS THE ENTIRE EFFORT.Since there are 4 shield soldering points, you pretty much have no choice but to move the coax around in order to gain access to the next point, so the probability of this failure is a good bit higher than zero.All of this becomes a non-issue with RG-400. Since it's dielectric is made of PTFE, there's no fear of melting or center conductor migration.I heat the body of the connector with a heat gun, get it good and hot, then quickly make precision solder joints using the 30 watt bench soldering iron. I've never once endured a center to shield shortRG-400 is the same size as RG-58. In addition to a superior dielectric, the center conductor is stranded and silver plated. Likewise, there are TWO layers of silver plated shielding. I use RG-400 jumpers on the test bench where I repair high power HF amps up to 2KW, and have never had any issues.FWIW: RG-142 is essentially the same, except the center conductor is silver plated solid, instead of stranded.I have not done a full loss assessment and characterization yet, but as best as I can tell it should be fine for HF work, though I suspect the losses of a 50 foot length would become pretty significant at VHF an higher. Again, that's a guess, not a tested assertion. Interestingly, finding detailed data for this coax has been rare, and sparse. If I can find some time, I'll add a screenshot from my VNA, hopefully sometime soon. ### ⭐⭐⭐⭐⭐ Great for the ham radio operator *by on Reviewed in the United States September 11, 2026* Used it to build a coaxial trap for my ham radio antenna. It was easy to strip the insulation and separate the braid and center conductor. I used about 6 feet to make the trap which leaves plenty to make a choke balun in the future. It is pretty springy and takes some creativity to keep it wound tightly but it’s of good quality and should have no problem handling 500 watts or more. ### ⭐⭐⭐⭐⭐ Good quality, true RG-400 spec cable *by on Reviewed in the United States June 22, 2026* Worked perfect, pro tip: be sure to use the correct RG-400 compatible end connectors, others will work but will not make a tight crimp ## Frequently Bought Together - Eightwood RG400 RF Coax Cable M17/128 Double Shield Coaxial Cable 40 feet - MOOKEERF 10 Pack 50 Ohm BNC Male Crimp Connector,BNC/Q9 Connector for RG58/RG142/RG400/LMR195/KSR195/3D-FB Cable - MOOKEERF TNC Male Connector 10PCS, TNC Male Plug Crimp Connector for RG58/RG142/RG400/LMR195/KSR195/3D-FB Cable --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/184732169-eightwood-rg400-rf-coax-cable-m17-128-double-shield-coaxial](https://www.desertcart.tn/products/184732169-eightwood-rg400-rf-coax-cable-m17-128-double-shield-coaxial) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-24*