On 30/01/2012 11:36, charles wrote:
In , Max Demian
wrote:
"Paul D wrote in message
...

Ditto. My office block also has UK locked clocks but they're very
sensitive to where they are because the steelwork of the building is
extremely good at shielding.

We normally don't notice until the batteries go and then the initial
attempt to resync leaves them spinning wildly - we take them off the
wall and put them on the north facing windowsill until they sync
(we're in London). My own German desk clock needs to go on the east
windowsill.

When I change batteries on my (Anthorn synchronised) radio controlled
clock I have to leave it in the (ground floor) bedroom until it
synchronises - then I move it into the living room and it's fine,
including changing to DST and back. Otherwise it just refuses to
synchronise.

I don't quite understand why it should need a better signal to
synchronise that for normal operation.

You don't. It's just that when synchronising, you can see it hasn't got a
signal. At other times you trust that it has one.

Often when you are setting it up, changing batteries, whatever you are
doing it during the day when there is most interference. Normally the
clock will sync at night when there is less interference and the MSF
signal is stronger.
--
Phil Cook