RG 214/U
Construction and cross-section
RG 214/U is a thick coaxial cable with a characteristic impedance of 50 ohms and a double shield: a stranded center conductor of seven silver-plated copper wires, a solid polyethylene dielectric, two braided shields of silver-plated copper and a black jacket.
Key data
- Characteristic impedance
- 50 Ω
- Outer diameter
- 10.8 mm
- Layers
- 5

Every cable is the answer to a task.
Layer by layer, to scale.
The same jobs as RG 213 where shielding matters: the second braid closes the gaps of the first.
inside
Silver-plated copper
Ø 2.26 mm
7 wires
Solid polyethylene (PE)
Ø over this layer 7.24 mm
Silver-plated copper
Single wire Ø 0.18 mmassumed
Silver-plated copper
Single wire Ø 0.18 mmassumed
Halogen-free compound
outsideØ 10.8 mm
“Assumed” means: the value does not come from a datasheet but is a usual value or one chosen from a reference.
Cross-section
To scaleOuter diameter
10.8 mm
Dielectric
7.24 mm
Center conductor, stranded
2.26 mm
The picture shows a version with a halogen-free jacket.

To look for yourself, take it in your hand.
Turn, zoom, hide layers.
RG 214/U as a 3D model, from the same data as every picture on this page.
Loads the model (0.2 MB)
3D model3D model · 208 kB
The model becomes every picture and every film.
One model, every picture.
Taken apart, up close, where it is used: pick a picture or a film of RG 214/U. All of them are computed, not photographed, and say nothing about what the cable is approved for.









That leaves the question of what the jacket says.
What the name says.
“RG” stands for “Radio Guide” and comes from a US military designation system for radio-frequency cables. The number is a serial number: it says nothing about diameter or characteristic impedance. A letter after the number marks a version of the type, and the suffix “/U” marks general use.
“RG 214” and “RG 214/U” name the same cable.
Sources and assumptions
Center conductor, dielectric, the two shields and the outer diameter follow the Belden 8268 datasheet, the halogen-free jacket follows Belden MRG2142. The wire diameter of the braid, its number of wires and its lay length are assumed.
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