A look at 1ppm 10MHz TCXO frequency reference. Measurements are done using HP 5384A counter.
Specs: http://linearparts.com/images/7400B2A1-10MHZ-TCXO-3Y.JPG
Seller's eBay store: http://stores.ebay.com/BootsParts-Electronic-Components
Followup video with a teardown: http://youtu.be/kwDsffvTrLk
