Yes. I have had the GPS system and also the Rubidium and other than seeing my HP counter with the oven controlled oscillator agree with them from time to time, I have to say it was pretty boring. Eventually both the standards broke and the HP is still with me.
Chuck, KE9UW Lionel Trains, TCA, LCCA, LRRC aka Jack, BMW Motorcycles BMWMOA #224 ________________________________________ From: [email protected] [[email protected]] on behalf of Chuck Smallhouse [[email protected]] Sent: Thursday, February 14, 2013 6:18 PM To: [email protected] Subject: [Elecraft] K3XREF Question Hi Don and All IMHO using a GPS disciplined 10 MHz (Trimble etc.) or a Rubidium standards are unnecessary , expensive and overly complicated approaches, to be used as the K3XREF 10 MHz external source. There are extremely stable (as high as 10 x-12th) Double Oven Controlled Xtal Oscillators (OCXOs) available on the Off Shore surplus market, for under $50 delivered. These are pulls from US built surplus equipment, and are guaranteed and tested . I have bought several, and the latest one has been bench tested for several months, and after initial adjustment has not varied a single cycle on my GPS locked counter. Even this stability, is an overkill, when used as an external reference for the "frequency", not "phase" locked K3. These OCXOs are less than 2" cube in size and available on e-Bay from several dealers. Check e-Bay under the subject OCXO. Chuck, W7CS ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
