- Connectors: N-male to N-female, BNC.
- Sheath current blocking cable to avoid coupling effects caused by braid currents.
- Compact length of approximately 0.5 m.
For practical applications, the use of surface wave chokes is an easy and usually efficient way to improve reproducibility. The surface wave choke is used at that location, which is suspected to generate the braid current. The wanted signal path through the inner coaxial cable is of low loss, whereas the surface wave between the outer shield and the surrounding is attenuated by the inductance of the ferrite toroid.
Typical applications for surface wave blocking chokes are:
- Field strength measurements, especially with electrically small antennas
- Antenna measurements with Baluns of unknown or insufficient common mode rejection
- Disturbance power measurement with absorbing clamps
- RF-voltage lift and unknown RF-ground conditions
- Hand-sensitive measurements if the coaxial cable or the equipment housing is touched