HP 5245M to be exact. There's one in my rack. Different plugin, same time base. Still works at 5 GHz.
On Saturday, January 30, 2016, Jeremy Nichols <[email protected]> wrote: > Ooh! Ooh! Not only a 5245 with a 5265 voltmeter plug-in but a 5360 > Computing Pig! Great picture, thanks for posting it. > > Jeremy > N6WFO > > > On 1/30/2016 6:16 AM, jimlux wrote: > >> This month's historical picture from JPL >> http://beacon.jpl.nasa.gov/historical-photo-of-the-month >> >> This atomic clock was used at the Goldstone Time Standards Laboratory in >> 1970, to synchronize clocks at Deep Space Network stations around the >> world. This master clock was accurate to plus or minus two millionths of a >> second, when compared to clocks maintained by the National Bureau of >> Standards and the U.S. Naval Observatory. In the late 1960s, JPL had >> developed a moon bounce technique to transmit signals from one deep space >> antenna to another. Experiments included periodic measurement of timing >> signals that were reflected from the surface of the moon, to find out if >> the station clocks were within allowable limits for accuracy. >> >> Time-nut will recognize, of course, that none of the things in that >> picture are actually an atomic clock, although they are thing that are >> useful if you have an atomic clock. >> >> >> Note the sophisticated temperature monitoring system. >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
