migo,
I wouldn't think it would be a problem to get the signal. I had no problems getting it from Calgary when I lived in Alberta.
But I cannot say hand-on-heart that you'll get it because there's a number of issues with radio-watches and signals (same frequency of signal and watch - e.g. the European signal versus the Japanese signal versus the North American signal, etc). I'm also not sure what background electronic noise does to the signal the further it travels from the source (e.g. signal strength and dissipation, etc).
If it's a world radio watch vice a European or Japaense version, it should be okay. I made the mistake of buying a radio-watch that only synched on the European signal, and learned all fo this the hard way.
Best of luck - when they work they are very neat.
Regards,
James