Themis - GPS-disciplined Frequency Standard
About the Themis Module
Themis is an HPSDR GPS_disciplined_oscillator (GPSDO) design that is an experimental approach for disciplining Crystal Oven (OCXO) OCXO's and provides 1PPS, 10MHz, and GPS Timestamping to the Atlas Bus for the HPSDR System. Two OCXO's are currently supported - the MTI-Milliren 270 and the MTI-Milliren 220. An on-board DSP provides the disciplining algorithms plus will allow experimentation with custom algorithms. The GPS engine is the LEA-6T from u-Blox. Themis plugs into Khronos as an option to the other GPSDO options.
A Block Diagram is available at Block Diagram
Project leader is John, AJ6BC.
Link to Wiki
Our HPSDR Wiki will contain the latest news, links, files, etc. for Themis. Here is the direct link to the HPSDR Wiki: THEMIS