HP Cesium Beam Atomic Clock
HP Frequency Standard package with power regulator and clock divider. This arrangement was used by my father to setup accurate timing of down range tracking stations (Eastern Test Range) from Cape Canaveral's central timing. This was before the same accuracy was provided by GPS, Loran-C etc. Also this configuration was used in national bureau of standards experiment (I think) to prove one of Einstein's theories ('Flying Clock').
HP Cesium Beam Atomic Clock
HP Frequency Standard package with power regulator and clock divider. This arrangement was used by my father to setup accurate timing of down range tracking stations (Eastern Test Range) from Cape Canaveral's central timing. This was before the same accuracy was provided by GPS, Loran-C etc. Also this configuration was used in national bureau of standards experiment (I think) to prove one of Einstein's theories ('Flying Clock').