There are a couple different things to consider here: - syntonization and synchronization of the oscillator for the TX/RX synth
- syntonization and synchronization of the oscillator driving the real time clock (i.e. counter) - setting of the real time clock My understanding is that the external reference to the K3/K3S is only used to FLL the oscillator for the RX/TX synthesizer. PLL is not used because of phase noise concerns. So you get syntonization (frequency) but not synchronization (phase). I haven't looked at the RTC schematic, but my strong guess is that it has its own crystal that is free running, even with the external ref. -ch de AI6KG On Sat, Aug 27, 2016 at 6:24 PM, MaverickNH <cbjesse...@comcast.net> wrote: > I have the K3EXREF and XTCXO3-1 installed on my K3s and have a Jackson Labs > LC-XO-Plus GPSDO attached to the factory-installed port. The config setting > REF*CAL shows the * to be blinking, indicating data is being received. > > I tuned into WWV 10MHz and found that my K3s time was pretty far off, based > on the audible signal. Using Config:Time, I can adjust the time to match > the > audible beat. I guess the K3EXREF address frequency but not clock time? > > I have a separate GPSDO running from ToyNTP http://www.dxatlas.com/ToyNtp/ > to keep my PC on time to less than +/- 50 microseconds. There's some high > latency somewhere... But digital modes like WSPR have adequately accurate > reference time. > > Bret/N4SRN > > > > -- > View this message in context: http://elecraft.365791.n2. > nabble.com/K3S-10MHz-GPSDO-Frequency-Time-tp7621858.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to c...@murgatroid.com > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
