Andrew Swallow wrote:
Jack Linthicum wrote:
[snip]


I think that a spread spectrum burst type transmission can be
intercepted and given a rough bearing. The money to do this is
miniscule in comparison with making Trident missiles into hand
grenades.

The command post does not move between transmissions. Spread
spectrum/frequency hopping systems return to previous frequencies every
few seconds. Just use several bursts to home in on the transmitter.

Andrew Swallow

Spread is fairly compact when compared with Ultra wideband. Where
spread can occupy megahertz ultra covers gigs, but at the lower power
level, at least under FCC rules. http://www.sss-mag.com/ss.html

Site has an nice simple tutorial on SS, with one exception, the "German
lady scientist" was the actress Hedy Lamarr and she worked it out at a
Hollywood party.