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RG142 Coax Cable

Part Number Conductor StrandingNom. Dia. of Cond.Dielectric (in)Nom. O.D. (in)Nom. Imp.Nom. Cap. (pF/ft)Approx LBS/MFT
RG142 Solid 0.0359 0.116 0.1950 50.0 29.4 43.00

What is RG142?

PDF of RG142 Specs Download the printable RG142 datasheet from Allied Wire & Cable

RG142 high-temperature coax cable is used in interconnections between telecommunications equipment and is widely used for commercial wireless applications. It also works very well in sensitive environments with minimal space such as avionic bays. Specific applications of this cable include radar, GPS and medical systems. Because it is approved for direct burial, this coaxial cable can be implemented in sophisticated underground connections while still holding a good shielding effectiveness. For more uses on RG 142 cable see the below links:

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

Mechanical & RG142 Coax Cable 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

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 has Low Passive Intermod (PIM) degradation of signal quality which is kept to a minimum. Since the RG142 is made with a solid dielectric this allows a high rate of crush resistance, which makes 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.

Use in the military

The RG142 cable was specifically built for the United States Military in the World War II era. It has a military equivalent part number of M17/60-RG142. This part number gives the United States Military an excellent option to use the highly reliable RG142 in their satellites, systems, and other tactical operations and equipment. Because of the obvious importance in these cables, the military requires them to have minimum and maximum dielectric adhesion values, specific shrink back allowance, eccentricity standardizations, stress crack resistance tests, and many more specifications 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.


RG142 Loss Attenuation Specifications by Frequency

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 is constructed with a silver plated outer conductor this prevents oxidati