For example: Agilent E4440A or Anritsu 68369
Probe Kit
Probe Master 4905-4RA
4905-4RA 150 MHz, 10X Probe with Readout Actuator, Length 10Ft (3M)
Manufacturer: Probe Master
Teledyne D600A-AT
WaveLink D600 6 GHz/4.8Vp-p Differential Amplifier Module with Adjustable Tips.
Manufacturer: Teledyne
Teledyne D610-PS
WaveLink D610 6 GHz/2.5Vp-p Differential Probe Amplifier with Dx10-SI Solder-In Tip (Qty. 1),Dx10-QC Quick Connect (Qty. 1), and Dx10-SP Square Pin (Qty. 1)
Manufacturer: Teledyne