We use Cb radios on Fork lift trucks to communicate between drivers and the office, delivery trucks also have cb's, and I'd like to have a secure channel for maintenance use.
Scrambler mic's are available, but they are expensive.
So i'm investigating whether its worth making something, I'm not after something unbreakable, just inaudible when unscrambled, frequency inversion as provided on some handhelds is still audible esp on male voices.
Scrambler mic's are available, but they are expensive.
So i'm investigating whether its worth making something, I'm not after something unbreakable, just inaudible when unscrambled, frequency inversion as provided on some handhelds is still audible esp on male voices.