[Blood of Tyrants]

"The passive detection capability requires a very active RF environment."

Incorrect. Television and FM and AM radio stations will work as the source for radiation. Why do you think the military took out all the TV and radio antennas in Bosnia?

[Poohbah]

It's a statistical process. The more emitters you can baseline from, the better.

And yes, we'll blast TV and radio transmitters--because they can be used for command and control functions.

[ASA Vet]

For exactly the same reason they will be taken out in Iraq.

[meenie]

Any aircraft that needs a controlled humidity environment in order to maintain its viability is not suitable for combat. The public and the air force got fleeced again or I might say YET.

[Dakmar]

STEALTH THREAT: Whoops! Phone signals may unmask a $40 billion flying secret.posts

[Texas_Jarhead]

So then it sounds like with passive detection it's not what you see but rather what you don't see.