FWIW, I've had really good luck with running Endrun CDMA stratum 1 timeservers. You can pick them up off of ebay for a few hundred. In theory it's more stable t

FWIW, I've had really good luck with running Endrun CDMA stratum 1 timeservers. You can pick them up off of ebay for a few hundred. In theory it's more stable than GPS, especially if you get one with OCXO or rubidium option.