On Mon, 22 Dec 2003 08:45:07 GMT, (Derek
Lyons) wrote:

(George William Herbert) wrote:

This is all pretty easy to jam, since the frequencies are
all known beforehand, but that general *approach* is very
hard to penetrate with traffic analysis.

note: This is more-or-less how the SSBN comm system works in fact.

It's hard to penetrate with traffic analysis, yes. However a station
transmitting 24/7 is a station that's easily located, and a station
that will eat a gross of ordinance at H hour + .01 second.

So everyobody goes on red alert as soon as the primary station stops
broadcasting, and the targetting information has to be sent by the
second backup station.

To anticipate some objections, yes, if you get all the backup
stations, you will prevent the sending of the targeting information
(as well as any other sort of C&C activity).