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Product

MIL-DTL-17 50 Ω & 75 Ω RF Coaxial CablesMIL-DTL-17 · M17/94-RG17975 Ω ± 3 Ω · Ø 2.54 mm64 pF/m · PTFE/FEP -55 to +200 °C

RG-179 Miniature Coaxial CableMIL-DTL-17 M17/94-RG179 (RG-179B/U) 75 Ω ± 3 Ω 7×0.10 mm SCCS + PTFE + FEP Ø 2.54 mm

RG-179 Miniature Coaxial Cable (MIL-DTL-17 M17/94-RG179 / RG-179B/U) is a miniature Ø 2.54 mm (0.100 in) 75 Ω ± 3 Ω high-temperature (-55 °C to +200 °C) RF, digital video (SDI / CoaXPress), and telecom coaxial cable featuring a 30 AWG (7×0.102 mm) stranded

Approved
Ozone, UV & moisture
Low-EMC design
EMC screen
Order designation
RG-179 Double-Silver-Braided (RG-179 DS) 75 Ω
Outer Ø ≈
3.0 mm
Copper weight
11 kg/km
Total weight ≈
24 kg/km
Min. bend R (fixed)
15 mm
All sizes (4)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Impedance Z0
75 Ω ± 3 Ω
DC to 3 GHz video, SDI & telecom
Outer diameter
2.54 mm ± 0.13
Fits 75 Ω HD-BNC, DIN 1.0/2.3, SMB, BNC
Centre conductor
7 × 0.102 mm
30 AWG stranded SCCS (Ø 0.30 mm)
Capacitance
64.0 pF / m
Low-capacitance Ø 1.60 mm PTFE
Velocity (VoP)
70 % (0.70 c)
Delay 4.76 ns/m · -55 to +200 °C
Operating V
1,200 V RMS
2,000 V RMS dielectric test

Typical values for this cable type, based on MIL-DTL-17/94-RG179 (M17/94-RG179 / RG-179B/U) — confirmed in the datasheet and quotation for your order.

Application fit

Is RG-179 right for your machine?

Engineered for high-density 75 Ω broadcast/industrial video patch bays (HD-BNC / DIN 1.0/2.3), airborne and shipboard cockpit camera feeds, DS3/E3 telecom backplanes, and CoaXPress / machine-vision

Switchgear & control cabinet wiring

Suitable

Compact 2.54 mm OD allows high-density 75 Ω HD-BNC and DIN 1.0/2.3 matrix routing in 1U video/telecom shelves.

Fixed installation

Suitable

Withstands -55 °C to +200 °C in aerospace, engine-test, and industrial furnace inspection camera conduits.

Immersion & wet locations

Suitable

FEP fluoropolymer jacket is completely impervious to oils, jet fuel, solvents, and washdown chemicals.

Energy chain / drag chain

With conditions

7-wire SCCS handles chassis vibration and camera gimbal tilt; for multi-million-cycle linear chains use USB3/Cat6A.

High-Flex USB Cable for Machine Vision
Typical machines75 Ω SDI, HD-BNC & DIN 1.0/2.3 patch baysAerospace, UAV & marine thermal camerasCoaXPress & industrial vision inspectionTelecom DS3/E3 & synchronization clocks

Construction

Layer by layer

Centre conductor: 7×0.102 mm (30 AWG, Ø 0.30 mm, 0.057 mm²) stranded silver-plated copper-clad steel (SCCS) per ASTM B501. Dielectric: Ø

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
17-strand SCCS centre conductor (30 AWG)7 × 0.102 mm (Ø 0.30 mm, 30 AWG) stranded silver-plated copper-clad steel (SCCS)MIL-DTL-17 M17/94-RG179
2Extruded PTFE dielectric (Ø 1.60 mm)Virgin solid polytetrafluoroethylene (PTFE) extruded to Ø 1.60 mm ± 0.08 mm for Z0 = 75 ΩMIL-DTL-17 Type F-1
338 AWG silver-plated copper braidFine 38 AWG silver-plated copper wire braid, optical coverage ≥ 95 % (Ø 2.13 mm)MIL-DTL-17
4FEP fluoropolymer jacket (Ø 2.54 mm)Fluorinated ethylene propylene (FEP Type IX) outer jacket in translucent brown (-55 toMIL-DTL-17 Type IX

RG-179B/U (M17/94-RG179) Single Silver Braid 75 Ω

Standard Ø 2.54 mm 75 Ω miniature PTFE/FEP coaxial cable (-55 to +200 °C).

RG-179 Double-Shielded (RG-179 DS / M17/94 Step-Up) 75 Ω

Double silver-plated copper braid (Ø 2.95 mm) for ≥ 85 dB shielding on sensitive SDI / CoaXPress links.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MIL-DTL-17/94-RG179 (M17/94-RG179 / RG-179B/U). Values for your order are confirmed in the datasheet and quotation.

Electrical

Characteristic impedance Z0
75 Ω ± 3 Ω
Mutual capacitance
64.0 pF/m (19.5 pF/ft)
Velocity of propagation (VoP)
70 % (0.70 c) · time delay 4.76 ns/m
Attenuation (10 / 100 / 400 / 1000
11.5 / 32.8 / 68.9 / 108.0 / 205.0 dB/100m
Max. DC conductor resistance @ 20 °C
≤ 800 Ω/km (30 AWG SCCS) · Braid ≤ 28 Ω/km
Operating / dielectric test voltage
1,200 V RMS working · 2,000 V RMS

Thermal

Operating temperature range
-55 °C to +200 °C continuous
CW power rating (100 / 400 / 1000
320 W / 145 W / 78 W CW @ 40 °C

Mechanical

Nominal dimensions (Core / PTFE
0.30 mm / 1.60 mm / 2.54 mm ± 0.13 mm
Min. bending radius
5 × D (12.7 mm) static · 10 × D (25 mm)

Resistance

Chemical, oil & solvent immunity
FEP jacket impervious to jet fuel
Flame retardancy
UL 910 CMP / VW-1 · FAR 25.853 aerospace

Reference standards

Primary specification
MIL-DTL-17 / M17/94-RG179 (RG-179B/U)
Connector compatibility
75 Ω BNC, HD-BNC, DIN 1.0/2.3, SMB, SMC

Identification

Dielectric colour
White virgin PTFE (Ø 1.60 mm)
Outer jacket colour
Translucent Brown FEP (Black, White, or

Sizes

4 standard configurations (RG-179)

Nominal dimensions, copper weights, impedance and transmission parameters for RG-179 per MIL-DTL-17/94-RG179 (M17/94-RG179 / RG-179B/U).

Dimensions & weights
Order designationConfigurationConductor sizeOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard RG-179 configurations
M17/94-RG179 (RG-179B/U) 30 AWG SCCS 75 Ω7×0.102 mm SCCS + PTFE + AgCu30 AWG (0.057 mm²)2.561612
RG-179 Double-Silver-Braided (RG-179 DS) 75 Ω7×0.102 mm SCCS + PTFE + 2×AgCu30 AWG (0.057 mm²)3.0112415
RG-179 LSZH Jacketed Industrial Video 75 Ω7×0.102 mm SCCS + PTFE + LSZH30 AWG (0.057 mm²)2.661513
M17/95-RG180 (RG-180B/U) 95 Ω Step-Up PTFE/FEP7×0.102 mm SCCS + Ø 2.60 PTFE (95 Ω)30 AWG (0.057 mm²)3.792918
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal factory values subject to ±5 % manufacturing tolerance per MIL-DTL-17/94-RG179 (M17/94-RG179 / RG-179B/U).

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
TDR 75 Ω impedance & VNA return loss (DC–3 GHz)Z0 = 75 ± 3 Ω; mutual capacitance 64.0 ± 2.5 pF/m100 % of reels
2.0 kV RMS dielectric & 1.2 kV RMS corona extinctionMIL-DTL-17/94 high-voltage & partial-discharge pass100 % of reels
Sample tests
Attenuation sweep (10 / 100 / 400 / 1000 MHz)Within MIL-DTL-17/94-RG179 insertion loss limitsPer production batch
-55 °C cold bend & +200 °C thermal agingMIL-DTL-17 fluoropolymer qualificationType approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

MIL-DTL-17 / M17/94-RG179UL 910 / FAR 25.853RoHS / REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX MIL-DTL-17 M17/94-RG179 RG-179B/U
Delivery form
Non-returnable plywood reels or export drums
Standard reel lengths
100 m · 305 m · 500 m · 1000 m
MOQ
100 m (stock variants) · 500 m (custom)
Lead time
2–3 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFRG-179 Miniature Coaxial Cable – technical datasheet4 sizes · construction, technical data, approvalsXLSXRG-179 spec data (Excel)All 4 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why is RG-179 (75 Ω) used instead of RG-178 (50 Ω) or RG-316 (50 Ω) for video and telecom?
Broadcast and industrial video standards (analog CVBS, SD-SDI, HD-SDI, 3G-SDI, CoaXPress) and E3/DS3 telecom trunks are standardized at 75 Ω because 75 Ω minimizes coaxial attenuation per unit diameter and reduces capacitive loading (only 64.0 pF/m on RG-179 vs. 96.5 pF/m on 50 Ω RG-178/RG-316).
Why do RG-179 (75 Ω) and RG-316 (50 Ω) have almost the same 2.54 mm outer diameter?
Both cables finish at ~2.50–2.54 mm OD and share a ~1.52–1.60 mm PTFE dielectric diameter, but RG-316 uses a thicker 26 AWG (Ø 0.51 mm) centre conductor to yield 50 Ω, whereas RG-179 uses a thinner 30 AWG (Ø 0.30 mm) centre conductor inside the same dielectric diameter to raise characteristic impedance to 75 Ω.
Which 75 Ω subminiature connectors terminate onto RG-179?
RG-179 is the standard miniature cable for 75 Ω HD-BNC (High-Density BNC), DIN 1.0/2.3, 75 Ω SMB/SMC, 75 Ω MCX/MMCX, and full-size 75 Ω BNC crimp plugs used on high-density routers, frame grabbers, and airborne video recorders. Each production reel undergoes 100 % characteristic impedance verification, mutual capacitance and DC loop resistance testing, and dielectric spark/withstand inspection before dispatch with an EN 10204 3.1 certificate.
When should I specify Double-Shielded RG-179 (RG-179 DS)?
Standard RG-179B/U has one ≥ 95 % silver-plated copper braid (~55 dB shielding). When routing multiple 75 Ω video or CoaXPress camera cables in a tight bundle or alongside power wiring, RG-179 DS adds a second silver-plated copper braid (Ø 2.95 mm) to raise shielding effectiveness above 85 dB.

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RG-179 Miniature Coaxial Cable

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