On Thu, 31 May 2012 22:15:04 +0800, "John_A"
wrote:

It sounds like a police siren, in AM mode, now at 14:15 z, any have an idea what this is ?


I am hearing an intermittent beeping on this frequency (approx. 2
beeps / second at 2000 UTC fading in and out. Just heard a short
digital transmission at 2013 UTC.

Jim