I decided I would like to start a new construction project for 2012. Having thought carefully I finalised on a 10MHz reference which can be used as a standard for test equipment, or to lock the master oscillator (TCXO) of a rig/transverter to a solid, accurate source. I did quite a bit of research over Christmas and concluded that the best bet would be to start with something commercial and add to it. It is possible to start from scratch but with the surplus market so cheap why not spend the time adding the sugar and actually using it.
My research eventually pointed me to the Trimble Thunderbolt which is a commercial GPS disciplined clock and readily available on eBay. This was to be the basis of the project. I ordered one and it arrived today.