There is one on UK ebay at the moment but its not being given away. From the one partial photograph it looks a bit rough.
https://www.ebay.co.uk/itm/HP-5065A-Rubidium-Frequency-Standard/183057846558? Robert G8RPI. > > On 24 February 2018 at 10:02 John Miles <j...@miles.io> wrote: > > > > > > Hi > > > > Well, if anybody else is “giving away” 5065’s I’d certainly be > > willing to > > “accept” > > one :) > > > > Bob > > > > > > Be careful what you wish for. :) The unit Pete is talking about is a > 1969-era model, in nice overall shape but with the usual bad capacitors on > the oven controller board. The lamp oven winding should be about 50 ohms > cold, but is closer to a dead short. It will take a LOT of work to restore to > working condition. > > The failed controller ran long enough to smoke a 1.5-ohm 1W resistor, > 1N400-something diode, and eventually the 1A line fuse ( > http://www.ke5fx.com/5065A_A11_sm.jpg ). Needless to say the lamp PCB looks > like something out of Fukushima. It'll need to be rebuilt from scratch after > rewinding the heater. > > Seriously -- anyone with a 5065A who hasn't checked/replaced the caps on > A11, don't let this happen to you. They aren't making any more of these > puppies. If the caps on that board are original, don't bother to check them, > just replace them, as Luciano suggests at > http://www.timeok.it/hp5065a-corner-3/. No need for exotic parts, just put in > whatever you have that is somewhere close to the original values. > > Not a bad idea to verify the ESR of the new parts you're installing as > well. > > -- john, KE5FX > Miles Design LLC > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
