10MHz-to-PPS board, rev2 A second try at the PPS board, this time with the correct footprint for the transistors on the sine-to-square input stage. Still some bugs left as I had to add a diode on the MCLR pin for the PIC-programmer to work correctly. 1PPS output is phase-coherent with the 10 MHz input. 10 ms long 1PPS output, ca 2.7V into 50R load. PPS-board, rev2. sine-to-square at the top. Sync-input and dip-switch in the middle. PPS-outputs at the bottom. PPS into 1 Megaohm - with ringing and 3.3V amplutide..