FTS 4040A Cesium Frequecy Reference
front
top
bottom
FTS-7101 Cesium Beam TubeCs tube
The above photo shows that a rodent has chewed away some of the HV insulation.
FTS 4040 module, FTS 4060, HP 5071A Cesium Standards
The above photo was taken some months before
Project GREAT.
Do you have comments/questions?