A wide range of Coaxial Feedthroughs are available.
BNC: SMA: SMB: Microdot: MHV: SHV: N: Triaxial
Standard Coaxial Feedthroughs for High Voltage up to 5KV, High Voltage Coaxial Feedthroughs for voltages up to 20KV
50 Ohm versions for frequencies from 100 MHz to 4 GHz
Microwave Feedthroughs for 18 GHz and 40 GHz
Various feedthroughs are available as floating shield versions, so the outer shell is not in contact with the chamber ground.
For all of the above feedthroughs, Allectra offers in-vacuum side connectors as well as ready-made cables.