[time-nuts] Efratom Modular System 8008-400-8

[Stanley Reynolds]

This is and old ~1987 Rubidium Standard which has a calibrate module "MDC". In the past I have attempted to calibrate but has always failed with the error led turned on. I have used various GPSDOs as primary standards with these attempts. I was able to calibrate with a FTS-5030 Cesium standard last night.

My guess is the primary standard must need a certain stability that the GPSDOs lack.

Does anyone have experience with this ?

Stanley