Holdover requirement of 2 days I'm sure made sense for the Telco-purchased GPSDO's intended to be on 24x7x365 at cell base stations e.g. Z3801A. I'm guessing 2 days would be how long it would take them to get a crew there to replace a broken GPS antenna and they figured the extra cost of the OCXO was worth it.
The USB-powered TCXO GPSDO's are clearly not aimed at that market. They seem to me, to be pocket-portable units that travel with a crew and are designed to come on quickly, acquire and lock to an antenna maybe just stuck to a window, and deliver accurate pps or 10MHz as references for non-telco uses. On Fri, Apr 4, 2014 at 7:50 PM, Dr. David Kirkby <[email protected]> wrote: > On 4 Apr 2014 23:39, <[email protected]> wrote: > > > > Hello everyone, > > > > sorry for the plug, but we just announced a new $568 complete GPSDO > > reference kit. > > Given the low power consumption I assume that this doesn't use an oven. > That means if it does lose GPS lock, the frequency is going to drift much > faster than other units. Or does it stop producing 10 MHz if it loses > lock? > _______________________________________________ > 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.
