The only document that I could find said 12 volt. Pete. On 10/28/2016 11:49 AM, Poul-Henning Kamp wrote: > -------- > In message <10a3ea7d-37f0-51bc-2470-35645d767bbd at comcast.net>, Peter Reilley writes: > >> The chip is run off 12 volts so it must be CMOS. > Or the OCXO is not a 12V model ? > >