[Milsurplus] 390As were everywhere

MillerKE6F at aol.com MillerKE6F at aol.com
Thu Mar 10 16:59:58 EST 2011


Back in the early 70s my employer supplied the microwave link between  
Goldstone Tracking Station and JPL-Cal Tech in Pasadena.  While making a  visit 
to oversee the alignment and testing of a 240 KB data link (That was the  
state of the art at the time to cram a 1/4 megabit signal into a Super Group  
Channel) that provided the Deep Space Probe links from Goldstone to JPL I 
heard  the familiar drone of WWV coming from one of the rows of equipment in 
the  Goldstone communications complex and was surprised to see the  
Engineer/Technician taking a time hack from a trusty R390A receiver tuned to 10  MHz. 
 Although not an odd event, it did seem strange in that every row of  
equipment in the room seemed to have an HP Atomic clock literally ticking away  
the time on the little clock the unit's face plate.  So even in the  presence 
of super accurate time references, the old R390A was a hard habit to  
break.  
 
73
Bob, KE6F


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