This radio is underneath the moving platform. Make a manual save, or be very careful - if the radio falls into the acid, you can't get it back!
How do I grab it?
You've got options.
Activate the platform, get on top of it, and try to grab the radio as it moves away
Place a portal underneath the platform, then pull it through the orange one
Where do I take it?
The light will turn green when you take the radio to the elevator you used to enter the chamber.
Guide help
This is the low-spoiler guide for "Transmission Received (Radio 9/26)" 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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