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(Note: This page is no longer being updated because I have had to change my servers around.)
Arrival times of the MSF one-second transitions (carrier OFF) at my house. I live about 450km from Anthorn, so about 1.5ms is due to propagation delay, the rest is probably the demodulator I'm using. It is a Galleon module and antenna with an additional transistor to let the open collector output drive an RS232 carrier detect line. The timestamping computer is synced to within a few microseconds of UTC.