Coaxial cables come in different shapes. The big distinction lies in the inner conductor (solid or Leiteitungung - rope of several fine conductors) and the shielding (single or multiple execution). The selection of the correct line always depends on the application and the frequency to be transmitted.
Example: When used outdoors, attention must be paid to a suitable sheath (more here), while for use in continuous motion, a cable with a strand inner conductor and a braided shield should be selected. In the overview below you can compare the different cables and select the appropriate one for your application.

Flexible coaxial cable - single shielded
Single shielded
Structure of a single shielded coaxial cable:
1 = inner conductor (Solid or litz wire (1b))
2 = dielectric medium/ insulation
3 = braided shield / film
4 = outer sheath
Single shielded coaxial cables - impedance 50R

Flexible coaxial cable - double shielded
Double Shielded
Structure of a double shielded coaxial cable:
1 = inner conductor (Solid or litz wire (1b))
2 = dielectric / insulation
3a = braided shield / film
3b = braided shield / film
4 = outer sheath
Double shielded coaxial cables - impedance 50R

Low Loss cable
Low Loss cable
Structure of a Low Loss coaxial cable:
1 = inner conductor (Solid or litz wire (1b))
2 = dielectric / insulation
3a = braided shield / film
3b = braided shield / film
4 = outer sheath
Low Loss Coaxial Cable - impedance 50R

Low Noise cable
Low Noise cable
Structure of a Low Noise coaxial cable:
1 = inner conductor (Solid or litz wire (1b))
2 = dielectric medium/ insulation
3 = braided shield / film
4 = outer sheath

Semi-Rigid Coaxial
Semi-Rigid – hand formable cable
Structure of a semi-rigid coaxial cable:
1 = inner conductor (Solid or litz wire (1b))
2 = dielectric / insulation
4 = outer sheath

Semi flexible coaxial cable
Semi-flexible:
Structure of a semi flexible coaxial cable:
1 = Inner conductor - completion as solid wire
2 = Dielectric / Insulation
3 = corrugated tubing
4 = outer sheath

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Configurator for 50 and 75R coaxial cables
Applications for our cables and lines: Vacuum,
thermal-vacuum-applications, motor engine stands, lines for
metal sensors, pressure sensor, torque sensor, underground mining,
tunnel construction, conveying systems, control lines, solar systems, wind power systems, medical technology and robotics.