Products > Test Equipment

Fluke RF Probe

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mojoe:
Does anyone know the difference between the 85RF and the 85RF II? The specs look the same. Other than people selling them, a web search brings up nothing useful.

stevebyan:

--- Quote from: mojoe on October 18, 2023, 09:09:46 am ---The specs look the same.
--- End quote ---
Not quite the same. The 85RF II has poorer frequency response specs over 200 MHz and a higher input capacitance (9 pF versus 3 pF). The schematic differs; the 85RF II uses two BAT41 Schottky diodes in place of the single germanium diode used in the 85RF. Both also use a single 1N4148 to linearize the response.

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