A CB RADIO

I found an old CB (community band)  radio unit when i cleaned the garage , this unit was installed in a car before and it has all the hardware and a car antenna. people used to contact each other in a selected channel before the cell phone era. it's main use was for the road or the neighborhood mainly for emergency situations.
i think that track drivers are still using it as it is a cheap and reliable way to communicate. i hooked it up and it's all working , i cant receive anything though . i did try all the channels and all the options. maybe i can hack it for receiving some satellites transmissions :). i got to make something musical from it if i'm going to open its guts.

if you have any ideas please let me know.