Sounds like a space based system Perhaps those mining probes Sent from my iPhone
On Jun 14, 2013, at 2:11 AM, [email protected] wrote: > Greg, > > the only power source I am aware off that can provide the ~5W power > required by that Novus box for 10-12 years with 20lbs weight limit without > any > external power sources or maintenance is a radioisotope thermoelectric > generator (RTG) such as those used on Spacecraft. The Russians used to use > those > also in light houses. > > Maybe the atomic decay could be counted and used for improving timing some > how?! > > That said the radiation would probably have a very negative effect on any > electronics near it for long-term stability. I would also not call that > solution "disposable" anywhere on earth. > > Definitely not hobby level stuff.. > > bye, > Said > > > In a message dated 6/13/2013 17:15:45 Pacific Daylight Time, > [email protected] writes: > > Tom, > > Thank you for your concern. I unfortunately cannot disclose many details > about the proposed project only to say that the application transcends much > of the typical "Time-Nuts" areas of normality. At present we are > evaluating typical frequency references to see if they will fit into this > project. > > What I can say is that phase noise is of little interest but log-term > frequency drift is. The completed unit will unfortunately not see GPS > signals > during most of its lifetime, be constrained to a weight not exceeding 20 > lbs, be considered non-recoverable (disposable) due to areas of deployment > thereby require a relatively cost-conscious design, have no access to a > source of power let alone any natural power-producing resources and have an > expected lifetime of 10-12 years without maintenance access. > > Most of the problems have been solved including the power source. This is > not your typical kitchen table project. And, as new frequency references > are developed and the design feasibility phase is still open, small and > minimal power-consuming products such as the Novus unit will garner our > attention. > > Thanks for your offer, > > Greg > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
