Frequency Standards, Quantum Reference and Crystal Oscillators:

CH1-75A Active Hydrogen Maser

New CH1-95 Active Hydrogen Maser

CH1-76A Passive Hydrogen Maser

CH1-81 Rubidium Frequency Standard

CH1-83 Rubidium Frequency Standard

Power Supply

CH1-84 Rubidium Frequency Standard

High Stability Crystal Oscillators

Time Interval Meters:

Time Interval Meter

Frequency and Phase Comparators,Receivers-Comparators:

CH7-48 Phase Comparator Unit

CHK7-51 Frequency Comparator

CHK7-54 Receiver-Comparator

CHK7-56 Receiver-Comparator

Instruments for Amplification, Distribution and Commutation of Frequency and Time Signals:

RF Distribution Amplifier

Time Signal Amplifier

Time Scale Corrector

RF Commutator

RF Commutator 115

Special Time-Scale Former