I was one of the beta testers and I tested the unit with the standard oscillator. I haven't run into any issues and found the fixed error across all bands to be quite nice. I never saw more than about 3Hz of error no matter the frequency on the VFO dial. Thats not to mean that if you have a standard oscillator that is at the outside of its bell that you may not have enough pull with the KEXTREF3 to pull things into place. Personally I never ran into this issue in my testing however I will probably also get the tighter tolerance rock for use when away from the 10Mhz reference. I find it really nice to know that the radio is on frequency... However the P3 still has to warm up before its frequency reference is accurate... ;)
~Brett (N7MG) On Fri, May 20, 2011 at 7:47 PM, Dan AE9K <a...@pkts.net> wrote: > Ed, > > Thanks for the response. Let me clarify my question. I'm wondering if the > KTCXO3 0.5 ppm oscillator can be omitted and still get great results with > the K3EXREF and the standard 5 ppm oscillator. This is of interest because > I intend to acquire the K3EXREF but do not have the KTCXO3 and would prefer > not to buy it if it doesn't add any benefit. > > My logic: If the K3EXREF adjusts the TCXO (via REF CAL) every 4 seconds, > then why not let it adjust the standard K3 TCXO instead of having it adjust > the optional KTCXO3 oscillator? > > Even though the two oscillators differ by an order of magnitude in their > error, does that error make a difference when the K3EXREF adjustments are > every four seconds? > > ps - During your beta testing were you using the standard K3 5 ppm > oscillator or the KTCXO3 0.5 ppm oscillator? I didn't find mention of that > on your web site. > > Dan > AE9K > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Installed-K3EXREF-tp6188288p6388532.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 > ______________________________________________________________ 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
