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  • Availability: Steam only; must complete the entire game first and play each chamber again. Completing a chamber or chapter does not enable the radios to be available.

The newest achievement, added in March 1, 2010 to Steam only, requires the player to find one (or more in some of the larger stages) radio(s) in each level and bring each to a specific point. A radio will have a red light on the front if it hasn't been brought to the correct location. The music will change to static as you approach the correct location, and then to a hidden signal when you have arrived, at which point the light will turn green. The achievement for an individual radio persists across saved games, though the light will change back to red. Since this achievement is only available after you have played through the game once, during the first play through only the initial radio exists and its blue light and signal will not change if brought to its achievement location.

Hidden signal

The hidden signal that is picked up after bringing a radio to its achievement location may be a Morse code signal, or sounds similar to those found on modems. To get full benefit out of them, you need to use sound recording software, or otherwise extract the audio files from the game.

Chamber Radio initial location Achievement location
Chamber 00 In the relaxation vault.

Portal Radio 1 start.png

The button room, just over the button.

Portal Radio 1 end.png

Chamber 01 On the camera to the right of the entrance. It can be grabbed before dropping down.

Portal Radio 2 start.png

The exit, just before the door to the emancipation grid.

Portal Radio 2 end.png

Chamber 02 On the wall containing the hole through which the portal gun fires. One way to reach this is to, while near the orange portal, shoot a blue portal at the ceiling just above the radio.

Portal Radio 3 start Camera 1.png

Where the portal gun was initially located.

Portal Radio 3 end.png

Chamber 03 On the camera near the exit. Knock the camera and radio down by shooting the wall with a portal.

Portal Radio 4 start Camera 6.png

By the ceiling above the second pier and the wall facing the orange portal, at the corner.

Portal Radio 4 end.png

Chamber 04 Released with the storage cube.

Portal Radio 5 start.png

The entrance.

Portal Radio 5 end.png

Chamber 05 Behind the door opened by two buttons. Shoot a portal under it before stepping through the door.

Portal Radio 6 start Camera 10.png

The pit previously containing a cube.

Portal Radio 6 end.png

Chamber 06 Above the pellet launcher. Shoot a portal near the launcher and grab it through the portal.

Portal Radio 7 start.png

The exit lift.

Portal Radio 7 end.png

Chamber 07 Under the entrance platform, behind the stairs.

Portal Radio 8 start.png

The exit.

Portal Radio 8 end.png

Chamber 08 Below the moving platform's initial position.

Portal Radio 9 start.png

Near the chamber number.

Portal Radio 9 end.png

Chamber 09 Within the small opening between the two sections. Methods of retrieving are described in the walkthrough for this chamber.

Portal Radio 10 start.png Portal Radio 10 method.png

The exit.

Portal Radio 10 end.png

Chamber 10 In the third section, on a tiny ledge on the left. To get it, proceed with the test until you are on the other side of the gap, then stand as close as you can to the radio and jump towards it while pressing E repeatedly.

Portal Radio 11 start.png

The orange portal.

Portal Radio 11 end.png

Chamber 11 In front of the door between the main and final areas. To reach it, shoot a portal near the radio, and grab it by standing within the portal.

Portal Radio 12 start.png

Where you collected the orange portal gun.

Portal Radio 12 end.png

Chamber 12 On the middle support of the panels that are extended furthest. To reach it, place portals on the angled platform and the bottom, then fall through starting from the first level.

Portal Radio 13 start 1.png Portal Radio 13 start 2.png

Directly under the angled panel.

Portal Radio 13 end.png

Chamber 13 On the right-hand side of the main room. Grab it from the moving platform.

Portal Radio 14 start.png

The window above the button of the initial room.

Portal Radio 14 end.png

Chamber 14 Between the button and the door it powers, on the right wall. Use momentum and a portal below it to grab the radio.

Portal Radio 15 start.png

The stationary platform in the middle of the sludge.

Portal Radio 15 end.png

Chamber 15 Hidden up behind the extended panel you use to launch yourself through the field. Place a portal on the wall next to and behind the panel, and you can grab it.

Portal Radio 16 start.png

The entrance.

Portal Radio 16 end.png

In the final room, within the pellet receiver container. Press the two buttons, and then place portals in a way that allows you to jump into the enclosed area (two portals on the ground, one being in front of the container). GLaDOS will release you from the area.

Portal Radio 17 start.png

The exit.

Portal Radio 17 end.png

Chamber 16 In the side room with multiple storage cubes.

Portal Radio 18 start.png

In the secret area behind the extended panel, next to all the scribblings.

Portal Radio 18 end.png

Chamber 17 Under the third lift leading to the exit.

Portal Radio 19 start.png

The incinerator.

Portal Radio 19 end.png

Chamber 18 In the side room after the first gap.

Portal Radio 20 start.png

The signal point can be reached by firing a portal on the ceiling directly above the two dot symbol on the floor of the next platform, and holding the radio through a second portal on the floor (while crouching). You can also just drop it through, or fall through yourself while holding it.

Portal Radio 20 end 2.png Portal Radio 20 end 1.png

In the room with all the turrets on platforms. It is on top of the box which contains the pellet receiver. Use a floor portal fling to get on the box.

Portal Radio 21 start.png.

The back of the area with a small button, below the cube dispenser area.

Portal Radio 21 end.png

At the bottom of the pit to the left in the final room.

Portal Radio 22 start.png

In the middle of the exit platform.

Portal Radio 22 end.png

Chamber 19 In the giant incinerator, on the left (right from the balcony). Set a portal just above it, then create another portal, and go through half of it to catch the radio without being burned.

Portal Radio 23 start.png

In the center of the side office, soon after the two big fans.

Portal Radio 23 end.png

Escape 00 Just after the load screen, you will find some stairs to the right. Under the stairs the way is blocked, but portal through the fence and crawl into the vent to a small area containing supplies and the radio.

Portal Radio 24 start 1.png Portal Radio 24 start 2.png

The center and back of the top of the platform just above the two vertical pistons that you use to get through a ceiling portal.

Portal Radio 24 end.png

Escape 01 After being ambushed by three turrets, you will find the radio near the broken sentry.

Portal Radio 25 start.png

In the next room, after knocking down the turret, enter the alcove containing supplies.

Portal Radio 25 end.png

Escape 02 When you enter the turret arena, the radio is in the lower section, on the opposite side of where you entered the arena.

Portal Radio 26 start.png

When you exit and reach the two turrets that are dropped from the ceiling, fling up to the next level and bring the radio near the green generators.

Portal Radio 26 end.png