Re: A puzzle with internet time and NIST time

[Helmut Wollmersdorfer <helmut.wollmersdorfer@fixpunkt.de>]

Am 16.10.2012 um 18:54 schrieb Doug:

> If you live within the coverage area and
> your WWVB clock is unable to synchronize, it usually means a source  
> of radio interference
> is near the receiver. Some common culprits are computer monitors  
> (some have a
> scan rate at or very close to 60 kHz), noisy AC wiring, fluorescent  
> lamps, or nearby power
> lines, transformers, or radio transmitters.

Also large soundboxes, machinery can disturb the signal.

I also experienced an unusual problem (because its unusual to have so  
many receivers): I positioned 3 receivers with antennas tuned to the  
same frequency in a line with a small distance between them. Then they  
disturbe each other. Around 10 cm (4 inches) distance between them  
solved the problem.

Helmut Wollmersdorfer