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Transmission Received (Radios 20-22/26)7 hints left
If you've been avoiding the secret dens because they give you the creeps, I've got bad news - one of this chamber's THREE radios is near the stairs in this chamber's den.


To get inside, cross the first acid pit, then crouch through a hole in the left wall.

Where do I take it?

The light will turn green when the radio is in the air above the next platform. I had consistent results when putting a portal into the spot where my orange one is in the screenshot below.


Be sure to save before you throw a radio (or yourself) through the other portal, though - it's all too easy for one or both of you to end up in the acid!

Where is the second radio?

On top of a small tower that holds the activation hole in the room with the turrets.

How do I grab it?

After dealing with all of the turrets, create a portal on the ground near the tower, and another on the low-down platform near the acid. Jump into the latter, and the momentum will get you on top of the tower.

Where do I take it?

The light will turn green when you take the radio down into the area with the standing button.

Where is the third radio?

At the bottom of an extremely deep pit in the room you unlock with the button.

Where do I take it?

The radio's light will turn green when it's a few steps away from the exit elevator.

How do I get it up there?

Juggling the radio as you fling yourself higher and higher is a tall task. I found it easier to leave the radio in front of a white wall near the starting point, then make a portal on the ground near the exit.

Guide help

This is the low-spoiler guide for "Transmission Received (Radios 20-22/26)" 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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