A while back I spent some time building a stratum 1 NTP time server based on a Motorola Oncore UT+ GPS receiver and an old (decommissioned and free) PC Engines WRAP.1E-1 board. I was inspired by N8UR's (John Ackermann) essay on using the Soekris net4501 single-board computers as high-accuracy time servers, which I don't have - but I thought I'd do what I could with the WRAP. I rigged up a level converter and hooked the Oncore up to the WRAP's serial port, installed FreeBSD and got it up and running keeping good time.
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