Hi How old would you *guess* the beast is?
Bob > On Feb 3, 2019, at 5:07 PM, John Ackermann N8UR <[email protected]> wrote: > > I've been playing with a Frequency Electronics 5608A "Frequency Standard." > It's a 2U rack mount beast with battery pack and a module labeled as a 10 MHz > Rb standard, and another as a 5 MHz VCXO. > > I originally thought that the VCXO was a cleanup oscillator for the Rb, but > that doesn't seem to be the case. As best I can tell, the Rb module accepts > a 10 MHz *input* and its output is a control voltage that goes to the VCXO. > The 5 MHz VCXO goes through a doubler to send 10 MHz to the Rb, and has > distribution for a bunch of 5 MHz and 1 MHz outputs on the rear panel. There > are no 10 MHz outputs. > > The "LOCK" indicator on the front panel lights up. Early tests indicate that > the short term stability is pretty good, but it has a bathtub shaped aging > curve that's more like a crystal than an Rb. > > Google doesn't turn up any hits on this model number. Has anyone here > encountered one of these guys and know what it was used for, or have info on > the design? > > Thanks, > John > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
