In Part 1 of our series on Choosing the Right Coaxial Cable, we looked at the benefits of DX Engineering RG-214 Double-Shielded 50-ohm Coaxial Cable—an excellent choice for outdoor applications and setups in which high RF isolation is paramount. Today, we’re highlighting another stellar performer: RG-400 High-Isolation Double-Shielded 50-ohm Coaxial Cable.
DX Engineering RG-400 brings to your RF systems the same quality and capabilities that are demanded of military and aerospace installations.
Specs:
- Very high power handling: – 2.75 kW at 30 MHz
- Stranded silver-plated copper center conductor for extreme efficiency
- PTFE dielectric for exceptional dimensional stability, low loss, and very high power handling
- Silver-plated copper braided double shields for high isolation
- Tough, waterproof fluorinated ethylene propylene MIL-C-17 jacket
- Proper terminations on RG-400 cable assemblies provide extremely low crosstalk and low noise ingress with a double-braid shielding effectiveness that results in over 100 dB of isolation across HF frequencies
Uses:
- Ideal for critical, low signal level, low noise applications as well as high power handling for RF equipment interconnections
Notes: RG-400 is a 0.195″ diameter cable and is not related in any way to DXE-400MAX or LMR-400 cables which are 0.405″ diameter. RG-400 may be the same size as RG-58A/U, but it is an aerospace-level performance cable with dramatically improved ratings in all categories.
Availability: RG-400 High-Isolation Coaxial Cable is available by the foot (RG-400-CTL) or in assemblies of 3, 6, or 10 foot lengths with either soldered 83-ISP PL-259 or BNC male ends. All cable assemblies are hi-pot tested and heat-shrink weather-sealed for the ultimate in service longevity.
What do hams say?
Five Stars: “Replaced some 400MAX jumpers with these and it lowered my noise floor about 3 dB on 20-6M. Handles the power from my OM4000A just fine. These jumpers are very flexible in tight spaces, which is what prompted my purchase.”
Five Stars: “This is the good stuff—low loss and flexible. Wrapped a 6 foot cable around a 4 inch toroid to make an RF choke between my transceiver and antenna tuner.”
Five Stars: “I am rebuilding a linear amplifier. I chose this coax for its noise immunity and its power handling qualities.”
Whether you’re a do-it-yourselfer or prefer your coaxial ready to install right out of the package, DX Engineering offers three solutions to accommodate your preference:
- Premade cable assemblies in a variety of types and lengths (3 feet to 200 feet), with DX Engineering’s patented crimp/solder 8U or 8X PL-259 connectors installed on both ends or BNC male ends in some cases
- By the foot and by the roll up to 1,000 feet
- Made to spec (type of cable, connectors on both ends, length) using the online DX Engineering Custom Cable Builder at DXEngineering.com
Not sure what coaxial cable is right for your station? Looking for tips on maintaining and preparing your cables? Check out these OnAllBands articles:
- Coaxial Cable Guide: Understanding the Differences Among Types of Coaxial Cable
- How to Use DX Engineering’s Custom Cable Builder
- DX Engineering Doubles the Number of Options for Ordering Custom Cable Assemblies Online
- Tips for Tidying Up Cables
- The Right Tools Can Take the Pain Out of Prepping Coaxial Cables
You’ll find coaxial cable; connectors; cable prep tools and kits; cable ties, loops, and wraps; and more at DXEngineering.com.
