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Transmission Received (Radio 15/26)2 hints left
A little music is sure to help you concentrate in a chamber like this. The radio is above the button-activated door.

How do I reach it?

The easiest method will see you placing a portal on the ground beneath the radio, then walking up the stairs into the area with the cube.


Shoot a portal into the pit where the stairs were, jump through it, and grab the radio as you fly through the air.

Note that if you already grabbed the cube, the stairs won't disappear, and you may need to load a save.

Where do I take it?

Through to the next room with the moving platforms. The light will turn green when it's on the piston in the middle.

Guide help

This is the low-spoiler guide for "Transmission Received (Radio 15/26)" 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.

Up to "Collect"
Hints written by Kieron West
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