Bullets are just the latest in a long line of things that can't stop you. This radio is beneath a broken cube dispenser near the end of the chamber.
Where do I take it?
The light will turn green when the radio is inside a den hidden behind a broken piston. You'll need to crouch by holding CTRL to get inside.
Guide help
This is the low-spoiler guide for "Transmission Received (Radio 18/26)" puzzle in Portal. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.
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