>>12033024
My old idea was to put identical trans units on towers, aimed at each other of course.
Then design the system to remain "off" no light at all, until either side needed to begin a transmission.
Like squelch, or standby.
No detector COULD ever sense that if it was "off" until a burst of light pulse was sent and ended.
When operating - would still be hard to detect, and if encrypted would be badass.
Never had a friend close enough to attempt making.
(have few friends and live off grid, so there's that.)