You might be interested in the LeoNTP Networked Time Server, which is now available: https://store.uputronics.com/index.php?route=product/product&product_id=92&search=ntp "LeoNTP is a Stratum 1 time server with GPS synchronised clock source designed from the ground up with the sole purpose of providing a cost effective but highly accurate and extremely high performing networked time server. Extremely easy to setup and configurable with flexible power options USB/PoE (802.3af) it can provide accurate synchronised time for your LAN, WAN, CCTV, PLC, Telephone systems or anywhere accurate standalone time is required." I was invited to try one of these boxes and I can report that it works very well, including a period when GPS was lost for several hours. Cheers, David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-taylor@blueyonder.co.uk Twitter: @gm8arv