It is a microwave frequency between 1.25 and 1.36 gigahertz.
That's 1.25 x 10^9 and 1.3636363636 x 10^9 cycles per second.
For a few weeks I've been accumulating bits for a Voice/Digital Moonbounce system for 432Mhz. (70cm) This will allow me, at a great stretch, one day, using either a long yagi or homebrew(?) dish antenna to exploit the ~2.6 second Earth - Moon - Earth return path to send my or YOUR short message -
"Hello Moon, I'm Rebeletarian!"What do you think; you like the sound of that instead?
Easy Pees, Lemon Squeezie. Plug n' Play, Point and Talk; what could be difficult about this!
Really, I'm not kidding. If we can't go there in person, we will get to hear our voice or Text type Message on E-M-E echoes. Many people do it all the time, but not relaying greetings messages via the moon, that's never been thought of ...
As for the Hutch effect. I don't want to get into all that blowing up the local Bathtubs and melting the Neighbour's dog stuff that Hutchison says he's always fearful of hearing from his neighbours.
No, today marks a suitable landmark in my personal MOONSHOT plans, no question, and I can only hope that it's true that the Shuttles' last Women Astronaut actually did say 'Hello' to me yesterday ...