Davis RF DRF-400 – Low-Loss 50 Ohm Coax Cable Comparable to LMR-400

DRF-400 by Davis RF is a low-loss, high-performance 50 Ohm coaxial cable engineered to match the electrical performance of LMR-400, with the added advantage of rugged outdoor durability and flexibility. Designed for use in HF, VHF, UHF, and even SHF systems, DRF-400 is ideal for both base station and mobile feedline runs.

Why Choose DRF-400 Over LMR-400?

• ✅ Equivalent Electrical Specs – Comparable attenuation and VSWR across the frequency range
• ✅ Enhanced Jacket Durability – Rugged polyethylene outer jacket is superior for outdoor use
• ✅ Flexible & Installer-Friendly – Easier to handle than solid-core alternatives
• ✅ High Shielding Effectiveness – 100% coverage foil plus 90% tinned copper braid for strong RFI protection

Ideal Applications

• ✅ Base station coax runs from radio to antenna
• ✅ HF through 2.4 GHz amateur and commercial systems
• ✅ Low-loss jumpers and interconnects in repeaters and stations
• ✅ Environments requiring superior weather and UV resistance

Specifications (Compared to LMR-400)

• ✅ Impedance: 50 Ohms
• ✅ Center Conductor: Stranded bare copper (LMR-400 uses solid copper-clad aluminum)
• ✅ Dielectric: Foamed polyethylene
• ✅ Shielding: 100% aluminum/polyester foil + 90% tinned copper braid
• ✅ Outer Jacket: Black polyethylene (UV-resistant)
• ✅ Outer Diameter: ~0.405" (10.29 mm)
• ✅ Attenuation @ 100 MHz: ~1.5 dB/100 ft (same as LMR-400)
• ✅ Attenuation @ 450 MHz: ~2.8 dB/100 ft
• ✅ Power Handling: 1500W @ 30 MHz (typical)

Davis RF DRF-400 is the preferred coax for those seeking LMR-400 performance with enhanced jacket toughness and stranded-core flexibility. Made in the USA and available in bulk spools or cut-to-length options for any RF system.