>>11697155>>11697181>>11697209The best solution for something like this IS wireless, but NOT by making it impossible to detect. That is, itself, impossible with wireless if someone cares enough. Unless it's perfectly directed with a perfect antenna (which doesn't exist), point to point still throws out noise, which can be detected. Narrow band radio has less noise, but only because in ANY situation - as part of how the science of radio waves work - a higher band signal will have less penetration power and range than a wider band with similar modulation and output power.
A physical wire like coax, on the other hand, is naturally grounded. It doesn't even need a foot of dirt on top - it's impossible to detect unless a person physically lays eyes on it. If "undetectable" is the main goal, this is the only feasible way to do it with existing technology.
The actual thing you should be thinking about, in use right now by drug runners and such, is using top-line encryption. Staying cryptographically or technologically ahead of the "competition" is the only way you could get this to work with wireless, and the former doesn't require physically upgrading every radio on the network every time the Man sees a radio he doesn't recognize.
