You could aim an x-ray beam at an airplane or car for example. Even with an omnidirectional antenna the signal of distant x-ray sources is so faint you most cer

You could aim an x-ray beam at an airplane or car for example. Even with an omnidirectional antenna the signal of distant x-ray sources is so faint you most certainly could overpower it for large distances. I also didn't realize but in this case unless the x ray sources have very specific, high frequency, detectable temporal radiation patterns you'd rely primarily on their location, and as I've said it's hard to resolve x ray images.