What is RG142 Coax Cable?

RG142 is a high-temperature coax cable ideal for use in interconnections between telecommunications equipment and is widely used for commercial wireless applications. RG142, also known as RG-C, is a flexible coaxial cable, which means that it is resistant to static build-up and high levels of electromagnetic interference. It is also incredibly durable, as it features a specific, patented, thermo-electric extruded PTFE dielectric. This dielectric can withstand temperatures up to 200 degrees Celsius. The top-quality material in this 50-ohm coaxial cable's construction makes it a great choice. It features a silver-coated coper-clad steel conductor, PTFE insulation, an FEP jacket, and a double shield. However, in order to get the best from RG142 coaxial cable, you need to ensure that you are using the best quality connectors, shielding, and core structures available.

Download the printable RG142 datasheet from Allied Wire & Cable

RG142 Coax Cable Electrical Specifications
RG 142 Benefits
RG142 Coax Cable Mechanical and Construction Specifications


1 items

  • RG 142
    $0.00 / 50 FT
    • Approx LBS/MFT: 43.00
    • Cond. Material: Silver-Coated Copper Clad Steel
    • Conductor Stranding: solid
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The RG142 coaxial cable is strong but still flexible. This means that it can bend into almost any shape. This coax works very well in sensitive environments with minimal space, such as avionics bays. Specific applications of this cable include radar, GPS, and medical systems. This coaxial cable has approval for direct burial applications, so it can be implemented in sophisticated underground connections. The RG142 coaxial cable is also suitable for use as a monitor cable, video cable, or even a digital voice cable. However, it is important to remember that the additional shielding will make these cables more efficient. In order to use your RG142 as a line splitter, place the two cables which are together to create a second-order splitter. This makes it possible to run a signal between two computers or devices. Even though the RF signal is lost, the signal is not interrupted. Instead, it is re-routed through the RF amplifier.

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RG142 Coax Cable Electrical Specifications:

  • Maximum Operating Voltage (vms): 1,900
  • Capacitance: 29.4 (pF/ft)
  • Impedance: 50 ohms (+/-2)
  • Maximum Operating Voltage (pF/m): 1,900 volts
  • Maximum Operating Frequency: 8000 MHz
  • RF Shielding, dB: 90
  • Velocity of Propagation: 69.21%
  • Shielding efficacy: 1GHz(dB/ft) >60
  • Mil Spec Equivalent: M17/60-RG142
  • Maximum Frequency (MHz): 8000
  • DC Resistance (ohms/1000ft): Center: 19.1 | Outer 2.22
  • Power (w) 400 MHz: 1100

RG142 Coax Cable Mechanical and Construction Specifications:


RG142 Coax Diagram
  • Inner Conductor:
    • Material: Silver-Coated Copper Clad Steel (SCCS)
    • Diameter (in.) 0.037
    • Diameter (mm.) 0.94
  • Dielectric:
    • Material: Extruded Solid Polytetrafluoroethylene (PTFE
    • Diameter (in.) 0.116
    • Diameter (mm.) 2.95
  • Outer Conductor:
    • Count: 2 Braid Shields (36 AWG stand)
    • Material: Silver Plated Copper
    • Diameter (in.) 0.162
    • Diameter (mm.) 4.11
  • Jacket:
    • Material: Extruded Solid Fluorinated Ethylene Propylene (FEP-IX)
    • Diameter (in.) 0.195
    • Diameter (mm.) 4.95
  • Additional specifications:
    • Weight: 43.0 lb/ft
    • Minimum Operating Temperature: -55°C
    • Maximum Operating Temperature: 200°C
    • Overall Diameter (in.) 0.195
    • Bend Radius: 1.0"

Benefits of the RG-142 Coax Cable

RG142 meets all MIL-C-17 specifications and utilizes standard connectors, so proprietary or exotic pieces are not required to build its infrastructure. RG142 also has good shielding effectiveness (between 40 and 60 db) and Low Passive Intermod (PIM) degradation of signal quality, which is kept to a minimum. Since the RG142 has a solid dielectric, it has excellent crush resistance, making it the coax of choice for tactical operations and applications. Even though the RG142 isn't your most phase-stable wire, the phase stability can be enhanced through preconditioning in the specific temperature ranges of your project. A similar coax cable to RG142 is the RG400. The RG400 coax cable is well-suited for projects requiring the operations of satellite systems, tactical operations, and equipment. You can learn more about these two formidable coax cables side by sidehere.

Use in the Military

The RG142 cable was specifically built for the United States Military during the World War II era. Its military equivalent part number is M17/60-RG142. This gives the United States Military the ability to use the highly reliable RG142 in their satellites, systems, and other tactical operations and equipment. Because of the obvious importance of these cables, the military requires them to have minimum and maximum dielectric adhesion values, specific shrink back allowance, eccentricity standardizations, and stress crack resistance tests that add to the durability and reliability of the RG142. All trusted manufacturers will produce the same high-quality RG142 because of its high QPL, which demands stability and rigidity in the testing and construction of specs and authenticity.

Frequency (MHz) Attenuation (db per 100 feet)
10 1.2
30 2.1
50 2.7
100 4
400 8
1000 13
1500 16
2000 19
2500 21
3000 24
10000 49
k1 0.368
k2 0.00120

The RG142 loss is widely accepted at HF frequencies. Because it has a silver-plated outer conductor, it prevents oxidation of the conductor which decreases loss vs time.

Power Handling by Frequency

Frequency (MHz) Power (watts)
10 5601
30 3206
50 2468
100 1726
400 831
1000 504
1500 401
2000 340
2500 298
3000 267
10000 125

The RG142 cable has first-rate power handling capabilities due to its solid dielectric materials.


Please Note: Per the specification, the RG142 cable will have splices. If continuous lengths are needed, just let our representative know.