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RG179 Coaxial Cable Specifications

RG179 Coax Cable

RG179 Cable

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What is RG179?

The RG179 Coax Cable is 75 ohm coaxial cable used in a variety of applications including security systems where high temperature is required. With a temperature maximum of 200°C, RG 179 cable also features a small, flexible diameter and a TFE taped outer jacket because of the high-temperature rating. Click on the links below to learn more about the different features of RG-179 cable.

RG 179 Cable Specifications and Construction

  • Conductor:
    • Conductor Stranding: 7/38
    • Number of Strands: 7
    • Strand Size: 38
    • Conductor Material: Silver-Coated Copper Clad Steel
    • Conductor Diameter: 0.012 in. (0.305 mm)
    • Inner conductor from core: .187 inch, maximum
    • Inner conductor from jacket: .250 inch, maximum
  • Insulation:
    • Insulation Diameter: 0.063 in. (1.60 mm)
    • Diaelectric Core: Solid, Extruded Polytetrafluoroethylene (PTFE)
  • Shield:
    • Outer Conductor: Single braid of 38 AWG SCCW
    • Outer Conductor Diameter: 0.084 inches, maximum
    • Braid Coverage: 92.3%, nominal
    • Carriers: 16
    • Ends: 5
    • Picks/inch: 12.0 +- 10%
  • Jacket:
    • Jacket: Type IX:FEP
    • Jacket Diameter: 0.100 inch +- 0.005
    • Jacket Type: Extruded Fluorinated Ethylene Propylene (FEP)
    • Lbs/MFT: 9.83

RG 179 Cable Electrical Specifications and Engineering Information

Minimum temperature -55°C<
Maximum temperature 200°C
Max Operating Voltage 1,200 Volts
Impedance 75 Ohm
Capacitance 23.0 (pF/ft)
Max Attenuation @ 400 MHz 21.0 dB/100ft
Max Power @ 100 MHz 880 Watts
Max Power @ 400 MHz 420 Watts
Max Power @ 1 GHz 260 Watts
Continuous working voltage 900 V rms, maximum
Operating Frequency 3 GHz, maximum
Velocity of Propagation 69.5 percent, nominal
Inner Conductor DC Resistance Maximum at 20°C): 24.45 ohms per 100 feet
Tensile Strength 50 klb/inch, minimum
Eccentricity 10 percent, maximum
Stress-crack resistance 230°C + 5°C
Cold Bend -55°C 2°C
Dimensional Stability 200°C +5°C
Spark Test 2,000 V rms, +10%, -0%
Voltage withstanding 2,000 V rms, +10%, -0%
Insulation resistance Not applicable
Corona extinction voltage 1,200 V rms, minimum
Characteristic impedance 75 ohms +-3
Attenuationy 21.0 dB per 100 feet, maximum, at 0.4 GHz.
Structural return loss Not applicable
Electrical Capacitance 23.0 pF per foot, maximum
Max Working Voltage 900
Max Conductor Resistance 24.5 (80.2)


RG179 Coax Cable Uses and Applications

RG 179 coax cable applications include medical equipment, video security systems, audio security systems (where high-temperature performance is required) and computer applications.

M17/94-RG179 Mil-Spec Equivalent

M17/94-RG179 is the Mil-Spec equivalent to the commercial grade RG 179 cable. This mil-spec coax cable is used for high-frequency signal transmission and features a jacket FEP Type IX per MIL-C-17. In addition, 83264 Belden MIL-C-17G 75 Ohm Coax Cable meets M17/94-RG179 specs.

RG 179 u cable Coaxial Cable Video

Other coaxial cables from Allied Wire & Cable :

Part Number Conductor StrandingNom. Dia. of Cond.Dielectric (in)Nom. O.D. (in)Nom. Imp.Nom. Cap. (pF/ft)Approx LBS/MFT
RG179 7/.0040 0.0120 0.057 0.1000 75 19.4 11.00