Fellow Time-Nuts, Since LORAN is now gone in North America, I needed a backup to GPS (belt and suspenders man, me). I recently acquired a working Spectracom 8170 thus: http://flic.kr/p/a4CYww Using my ex-LORAN antenna (LF Engineering L-400B) it syncs in about 10 minutes. Shaun M. No Regret (Since 1996)