21-04-2023, 08:56 PM
Many years ago I worked for a company called General Electronic Developments. WE made a master clock there, but it was specifically as a master clock and if I remember correctly was tuned to 10.00 megs WWV in Hawaii.
I never knew how much we sold them for, but it would not have been cheap. The local oscillator in that ran inside an oven. The oven was a big 5 watt block resistor, then the crystal body, then an MJE2955 as the current source. It all fitted into the smallest diecast box from Eddystone, which was packed with polystyrene foam. I know NASA had a few of them, as did the CSIRO Division of Radiophysics where I worked later.
They had Nixie display elements, mainly because LEDS were just sticking their heads up.
Joe
I never knew how much we sold them for, but it would not have been cheap. The local oscillator in that ran inside an oven. The oven was a big 5 watt block resistor, then the crystal body, then an MJE2955 as the current source. It all fitted into the smallest diecast box from Eddystone, which was packed with polystyrene foam. I know NASA had a few of them, as did the CSIRO Division of Radiophysics where I worked later.
They had Nixie display elements, mainly because LEDS were just sticking their heads up.
Joe
