What is a "Supply Request Radio"?

You can acquire 1 of 3 types of radios from each mission.
Mission Complete
▶ Grade 1 Radio : Grade 2 Supply Box available
▶ Grade 1 Radio : Grade 2 Supply Box available
Mission Complete With 3 Medals
▶ Grade 1 Radio : Grade 1 Supply Box available
▶ Grade 1 Radio : Grade 1 Supply Box available
Perfect Mission
▶ Gold Radio : Gold Supply Box available
▶ Gold Radio : Gold Supply Box available
You can re-play a mission to acquire a different radio.
Rewards can be collected by opening a supply box.
You first need to request a supply box from a warehouse and wait until it can be opened.