RG401 Coaxial Cable Applications:

Primary applications for RG401 coaxial cables are for high-frequency radio transmission up to 18 GHz. The coaxial cable has good power handling capabilities. At 1 GHz, the maximum power rating is 1400 watts, and at 10 GHz, it is approximately 350 watts. The maximum voltage rating is 3,000 volts. The solid outer conductor means you can bury this cable directly in the ground.

RG401 Coaxial Cable Construction:

Conductor

The inner conductor is a solid 0.064-inch diameter silver-plated copper wire.

Dielectric

RG401 has a low-loss solid PTFE dielectric with an outside diameter of 0.215 inches. The solid dielectric helps center the conductor and minimizes standing wave interference, especially when bending the coaxial cable.

Shield

The shield or outer conductor is a solid copper tube with a wall thickness of approximately 0.02 inches and an outside diameter of a quarter of an inch (0.25 inches). The outer shield is a semi-rigid material and has a maximum bend radius of 0.25 inches.

Similar Coaxial cables

RG401 50-ohm coaxial cables belong to a family of high-frequency, high-power coaxial cables with different types of jackets approved for direct burial in the ground. These include:

MIL-Spec M17/129-RG401 Coaxial Cable: A mechanically similar cable manufactured to strict M17/129-RG401 military specifications with an ability to comply with the requirements of the 18 GHz swept frequency test.
RG 316 Coaxial Cable: A 3 GHz rated coaxial cable, RG316 has a maximum voltage rating of 1,200 volts.
RG 400 Coaxial Cable: RG400 cable has a maximum temperature rating of 200 degrees Celsius, a maximum frequency of 12.4 GHz, and a maximum usable voltage of 1,900 volts RMS.
RG402 Coaxial Cable: RG402 coaxial cable has a similar construction to RG401, except that it has a slightly smaller outer diameter, a maximum frequency range of 20 GHz, and a voltage rating of 2,500 volts.

RG401 Coaxial Cable Specifications:

Conductor: Silver-coated, solid copper conductor with a diameter of 0.064 inches
Dielectric: Solid PTFE dielectric with a diameter of 0.215 inches
Shield: Solid copper tube with a wall thickness of approximately 0.02 inches and an outer diameter of 0.25 inches
Characteristic impedance: 50 ohms
Nominal capacitance: Approximately 29.6 picofarads per foot
Maximum voltage: 3,000 volts
Temperature range: From 100 C to -55 C
Maximum Frequency: 18 GHz
RF shielding: 100%
Maximum one-time bend radius: 0.25 inches

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