Test Board for the HP 5087A Distribution Amplifier Boards

One DIY 2X Multiplier board for the HP 5087A 5MHz In 10MHz Out like 05087-60011

One DIY 10MHz output amplifier board for the HP 5087A Replaces 05087-60012

Test Board (bare PCB) for DIY 10MHz OCXO Frequency Standard Reference Timebase

Bare Board for DIY 10MHz OCXO Frequency Standard Reference Timebase

Keysight 83220-60001 Circuit Board

Microwave RF double balanced mixer RFin=1.5--4.5GHz, RFout=DC--1.5GHz

External Reference Enhancement board for the HP Agilent 5328A 5328B Counter