I was curious so I bought a GPS disciplined 10MHz source from China using the eBay seller "cybereveryday." I have a calibrated scope and a Rubidium 10MHz source. I noticed a frequency offset on three of the WWV frequencies when I plugged it into the K3 XREF module after getting "GPS Lock" rather than using my Rubidium lamp standard I measured the 10MHz output from the GPSDO and it is 10,000,025 Hz. (2.5 PPM) The eBay ad states "Accuracy: than above OXCO 2 order of magnitude." The point is, even using the K3 zero-beat method with 15 MHz WWV I can get closer to being dead on frequency than using this Chinese mfg. GPSDO. Again, Elecraft quality and engineering WINS.
Jay Miller, N4NUI ______________________________________________________________ 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