Hp (HEWLETT -PACKARD) 11713A Attenuator/ Switch Driver

The HP 5087A is a distribution amplifier designed to take stable frequency reference signals (such as from atomic clocks or

HP 8410A is a vintage microwave network analyzer — a professional RF/microwave test instrument originally made by Hewlett-Packard. Network analyzers

it doesnt work.Buyer has to repair it or buyer can use it as parts.As pictures not more. I dont know

HP Plisch ZF/RF-MISCHER ZRM 100.” That means it’s a ZF/RF mixer generator made by Hewlett‑Packard (HP) in cooperation with Plisch