The recent announcement about development of an external reference option for the K3 is most welcome and will allow users to obtain the best calibration possible especially for digi modes like WSPR where 1Hz accuracy is required.
For anyone not quite sure about what it is, how to use it, or where to obtain the 10MHz external high stability signal here are a few links to get started. The two most popular 10MHz oscillators appear to be either GPS based (Trimble Thunderbolt) and Rubidium based (LPRO-101) both are easily obtained on Ebay. Set up and use the LPRO-101 units http://kc.flex-radio.com/KnowledgebaseArticle50460.aspx http://k9zw.wordpress.com/category/k9zw-built/ http://www.mentby.com/brian-lloyd/getting-a-rubidium-rb-reference.html http://www.ka7oei.com/10meg_rubidium1.html Setup and use of the Trimble Thunderbolt http://www.vk4adc.com/gpsdo.php http://www.prc68.com/I/ThunderBolt.shtml http://trl.trimble.com/docushare/dsweb/Get/Document-10001/ThunderBoltBook2003.pdf http://www.leapsecond.com/tbolt-faq.htm http://www.leapsecond.com/pages/tapr-tbolt/ If you want to distribute the 10MHz signal to a number of instruments at the same time the TAPR TADD-1 kit might be of interest. http://www.tapr.org/kits_tadd-1.html 73 Trevor G0KTN ______________________________________________________________ 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
