0.070" Semi-Rigid Coaxial Cable 50 Ohm Low Loss Feeder Cable for Test and Measurement

The SR-070-LL is a 0.070 inch (1.78mm) low loss semi-rigid coaxial cable engineered for applications where minimal signal attenuation is critical. Featuring optimized copper tube construction with low density PTFE dielectric, this cable delivers significantly lower insertion loss than standard 0.047" and 0.056" designs while maintaining a compact form factor. The seamless copper tube outer conductor provides 100% RF shielding with effectiveness exceeding 100 dB, eliminating signal leakage in sensitive receiver paths and multi-channel arrays. The silver-plated copper-clad steel center conductor ensures reliable soldering and mechanical stability for permanent installations. With frequency capability extending to 40 GHz and phase-stable construction suitable for aerospace, defense, and test applications, this ultra low loss semi-rigid cable meets the demands of satellite communications, microwave systems, and high-performance test fixtures where every 0.1 dB of loss matters.

• Low loss design – Optimized conductor geometry and low density PTFE dielectric reduce attenuation by 20-30% compared to standard semi-rigid cables of similar diameter
• 0.070 inch (1.78mm) diameter – Larger form factor enables lower loss while maintaining compatibility with compact system layouts
• Seamless copper tube outer conductor – Provides 100% RF shielding with zero signal leakage and shielding effectiveness >100 dB
• 40 GHz frequency capability – Supports microwave and millimeter wave applications through Ku, K, and Ka bands
• Optimized PTFE dielectric – Engineered for minimum insertion loss with stable 50 Ohm impedance across temperature
• SCCS center conductor – Silver-plated copper-clad steel for excellent conductivity and reliable soldering
• Phase stable construction – Copper tube geometry maintains consistent electrical length under mechanical stress and temperature variation
• Permanent forming capability – Can be bent to shape for custom routing without spring-back or performance degradation
• MIL-DTL-17 compliant – Available with mil-spec compliance for defense and aerospace programs
• Custom lengths – Cut to exact specifications for prototype through production quantities
• Connector options – Bare ends for PCB solder, SMA through 26 GHz, 2.92mm through 40 GHz, TNC, and N-Type
• 10 meter minimum order – Low MOQ for development projects and production runs

• Satellite communications – Low loss feeder links and payload interconnects for Ku/Ka-band transponders
• Microwave systems – Internal wiring in transceivers, up/down converters, and microwave assemblies
• Test and measurement – Phase-stable signal paths in VNA test fixtures and ATE systems
• Aerospace and defense – Radar modules, electronic warfare systems, and secure communication links
• Telecommunications infrastructure – Backhaul equipment and base station components
• Broadcast and CATV – Headend equipment and distribution systems requiring low loss
• Medical electronics – MRI and RF ablation systems demanding clean signal transmission
• Industrial RF – Plasma generation, dielectric heating, and sensing applications
• Research laboratories – Custom test setups and experimental configurations