As I understand, it's almost certainly used to send coded messages to Russian agents in case of emergency. The Russians are probably broadcasting a constant tone to reserve the frequency, so other people don't start using it. They say as much in the article.
I think with a little bit of ingenuity you could actually hijack that frequency especially since it transmits a constant tone. A competing signal could, I think, be used to modulate it, piggybacking other information on it.
No Real Mystery (Score:5, Informative)
As I understand, it's almost certainly used to send coded messages to Russian agents in case of emergency. The Russians are probably broadcasting a constant tone to reserve the frequency, so other people don't start using it. They say as much in the article.
Re:No Real Mystery (Score:2)