[time-nuts] Re: HP atomic clocks . The cesium tubes in them are no longer any good,

[vilgotch1 at gmail.com]

> > I probably could discipline the internal 5 MHz to an external GPS
>
> > Lester B Veenstra  K1YCM  MØYCM  W8YCM   6Y6Y
> > lester at veenstras.com
>
>**************************
I have a 5061A here that has been running for years with a Brooks Shera 
GPS disciplining system built into the battery compartment. I have 
arranged it so that the Cs can still be used as the Cs tube was still OK 
last time I had it on but clearly it's getting pretty old now. One thing 
I have found with these devices is that the ion pump power unit is prone 
to fail. I have repaired one or two - usually the 100M resistor in there 
is the problem. I'm down here in Australia where replacements are hard 
to find so if anyone is parting out a unit with a worn out tube I'd 
appreciate a chance to obtain the ion pump supply module.

73, Morris Odell VK3DOC
Melbourne, Australia
>