The Thermax Wire M17/093 RG178 is a MIL-C-17 compliant 75 Ohm coaxial cable engineered for high-frequency signal transmission in demanding RF and microwave applications. Built with a stranded silver-coated copper conductor, PTFE dielectric, and silver-coated copper braid shield at 96% coverage, this cable delivers superior signal integrity across extended frequency ranges and wide temperature operating windows.
Technical Specifications
Electrical Characteristics:
• Impedance: 75 Ohm
• Capacitance: 96.45 pF/m (29.4 pF/ft)
• Velocity of Propagation: 69–70%
• Conductor Resistance: 828 Ω/km at 20°C max; 24.5 Ω per 100 ft
• Insulation Resistance: 10 GΩ·km minimum
• Operating Voltage: 1000 V maximum
• Test Voltage: 2 kV
• Working Voltage (50 Hz nominal): 1.5 kV RMS
Frequency-Dependent Attenuation:
• 100 MHz: 45.3 dB/100 m
• 300 MHz: 74.9 dB/100 m
• 400 MHz: 91.2 dB/100 m
• 1 GHz: 145.7 dB/100 m
• 3 GHz: 257.2 dB/100 m
Physical Characteristics:
• Conductor: 7 × 0.102 mm stranded silver-plated copperweld
• Conductor Diameter: 0.30 mm
• Dielectric: PTFE (Teflon®), 0.86 mm diameter
• Shield: Single-layer silver-coated copper braid, 38 AWG, 96% coverage nominal
• Jacket: FEP (Fluorinated Ethylene Propylene)
– Key Features
• MIL-C-17 specification compliance ensures military-grade reliability
• 75 Ohm impedance optimized for video and analog signal applications
• Exceptional shield effectiveness at 96% coverage minimizes EMI/RFI ingress
• PTFE dielectric provides stable performance across temperature extremes
• Silver-plated conductors reduce oxidation and maintain consistent electrical properties
• Frequency response extends to 3 GHz with predictable attenuation characteristics
– Typical Applications
• RF and microwave test equipment interconnects
• Antenna and transmission line assemblies
• Video signal distribution in shielded environments
• Military and aerospace systems requiring MIL-C-17 compliance
• Precision measurement and instrumentation
– Compatibility & Integration
Standard coaxial connectors interface with this 75 Ohm cable for video, composite, and composite video systems. Sold in 100 foot lengths per unit.
