Materials:

Body: Gold Plated Beryllium Copper
Center Contact: Gold Plated Beryllium Copper
Dielectric: Teflon
Finish: Body and Contacts – Gold plated
Marking: “Pomona 4299”

Ratings:

Voltage:
Shield/Earth: 30VAC/60VDC Max.
Inner Conductor/Shield: 335VRMS Max.
Operating Temperature: -65ºC (-85ºF) to +165ºC (+329ºF)
Nominal Impedance: 50 Ohms
Frequency Range: 0-12.4 GHz.