My experience is that the simple GPS-based 10 MHz reference works well with the K3. The K3 is quoted as measuring frequency to 1 Hz accuracy, implying a measurement time of the order of 1 second. That seems to be enough to smooth out the jitter from the Neo-7M.
Of course, there are better solutions around, but why spend money on something which is unnecessary? My experience including build instructions was posted on my blog yesterday: http://la3za.blogspot.no/2015/10/just-good-enough-10-mhz-reference.html vk2rq wrote > I bought a module like that. If you set the output frequency to something > that divides evenly into 48MHz, then the output is quite stable. > Otherwise, if you set it to something else like 10MHz, the jitter is quite > obvious on the scope. It is fine for jobs like calibrating a frequency > counter or zero-beating a transceiver. You'd probably want to smooth out > the jitter though if you want to use it for a K3 reference oscillator. > 73, Matt VK2RQ ----- Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Cheap-ref-osc-to-lock-K3-tp7608667p7608700.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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
