4 ms·
I guess I was so enthralled with the rest, that I have missed this device. If it's totally passive, what's the battery for?
by beebeepka 3y ago
I guess I was so enthralled with the rest, that I have missed this device. If it's totally passive, what's the battery for?
- myself248 3y agoObserving the parameter being monitored and deciding whether to ground or not ground the resonant element. "Passive" in this case meaning that none of the battery power was turned into RF. It did not produce any RF. It merely absorbed more or less RF to encode information.
- Cthulhu_ 3y ago"Passive" in this case meant it didn't emit its own signals per se; active sonar emits an audible noise (which can easily be traced back to an origin), passive sonar just listens.
- dylan604 3y agoThe trove of information released around the time of the Snowden leaks are not all necessarily from Snowden. There was a second leak that everyone likes to attribute to Snowden. Most of the info on the gadgets that I had seen seem to all be from the second source. But, yeah, they had some pretty cool toys.