[time-nuts] Power supply for OCXO using "USB power blocks"

[jimlux]

Has anyone tried a +5V to +15V DC/DC to run an OCXO, getting the 5V from 
one of those rechargeable USB power bricks.  I was thinking about 
portable operation.

In my case, the OCXO is something like a Wenzel streamline. I would 
think that the DC/DC probably has some noise, but maybe DC/DC to a 
higher voltage, then a good linear regulator to clean it up (or would 
the radiated noise just leak around).

How quiet is the output from those USB battery things..I've used one to 
run a RTL-SDR, but that's hardly a ultimate low noise receiver.

jim