I received a new (NOS?) GW2500B earlier this week, and it has not synced to the atomic clock yet. When I press the A (receiving) button, "Get" and "--:--" appears on the two LCD screens. I tried a manual sync at midnight and at 5-ish in the morning. The hand in the left subdial points at R but never goes to W. I put it into test mode (buttons B, C, and D at the same time), selected the "U 60" (USA 60kHz) option, and tried doing a manual sync. After 7 minutes, the display says "UNG" (no good).
I live along the north-east edge of the Ft Collins signal area, so the signal might not be strong. But I have a GW-M5600 which syncs to the atomic clock many nights of the week, from various places around the house. So I'm surprised the 2500 doesn't pick up the signal too. Sadly, the 2500 doesn't give an indication of the signal strength. The 5600 indicates a signal strength from L1 to L3, depending on conditions.
The general advice out there is to be patient and to try different places around the house. But it's odd that the 2500 has not synced after 3 nights, while the 5600 has synced after everyone of those. They were sitting next to each other and facing the same way, too.
Can anyone offer any advice or share their experience with respect to the sync process? How long does it take for the hand to point from R to W? Does it need to point at W and then fail to sync before the ERR message appears? After reading the manual, my interpretation is
R - receive: trying to detect the atomic sync signal
W- working: got the signal, trying to synchronize time
ERR: could not sync (but did detect a signal?)
I was expecting to at least see ERR by now, but still just see "GET --:--"