HP 75000 Series C HP E1406A Command Module

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

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

The HP 11713A Attenuator/Switch Driver is a laboratory instrument used in RF and microwave measurement systems to control programmable attenuators

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