JägAir Time is derived from an ensemble of Atomic clocks. The Ensemble
currently consists of four Agilent (HP) 5071A and two HP 5061B Cesium clocks.
The newest of these Cesium Beam clocks, the Agilent 5071A (opt 001),
is capable of maintaining correct time to within one second every 1,800,000 years.
The average of these Cesium Beam clocks steers the Sigma-Tau Active Hydrogen Maser.
The output of the Maser (HM-4) constitutes the physical realization of UTC-JITT.
The output of HM-4 is applied to timekeeping equipment that generates the "tick" and "beep"
heard in the announcement. The atomic clock also controls a computer that generates the
voice announcements. These two audio signals are applied to the telephone answering
equipment. Four announcements are made each minute. The male voice announces UTC
(Coordinated Universal Time) on the minute and half-minute, the female voice announces
local time at 15 & 45 seconds after the minute.