Transmission Received: finding missed radios

tried to get "Transmission Received" achievement and missed one or two radios? use that guide to find which exactly you have missed and where to find them

about

that guide is for those people who have tried to get "Transmission Received" but ended up having 1-2 radios left. with the instructions below you can find which radios you have missed

method #1: downloadable *.html file

• download that file - https://drive.google.com/file/d/1DnpWbB13Rxc5A3xkzh2Sq9bmVYJ9nnwC
  
• open that file in a browser (it is a HTML file)
  
• follow the instructions to find which radio(s) you have missed
  

• return back to that guide for details and screenshots of the missed radio(s)

method #2: online *.html scribble

• follow that link - https://jsfiddle.net/xrudpnzg/
  
• follow the instructions on the bottom-right window to find which radio(s) you have missed
  

• return back to that guide for details and screenshots of the missed radio(s)

technical details and how it works

• game save your current achievements progress (including which radios from "Transmission Received" you have received a signal at) in the following file
  

  "...STEAM\steamapps\common\Portal\portal\gamestate.txt"

• each achievement (and its progress) is saved as a separate "id"; "Transmission Received" is under "id" : "149"
  
• the "data" value stores what radios you have successfully activated. that information stored as HEX (base-16) value and can be anything from "0x0000000000000000" (activated 0 radios) to "0x0000000003FFFFFF" (all 26 radios are activated)
  
• each digit of "data" (0 to F) stores information about four radios in BIN (base-2) format. for example "F" ("1111") means that you have found 4 radios, while "9" ("1001") means that you have missed second and third radio in that segment
  
• what I have done is to decipher which digit of "data" stores which radios, and wrote a script that can take any given "data", parse it, and report back which radio have been missed
  
• for example, if you paste the following data "0x0000000003B8A293", then script shall return that you have missed the following radios:
  

  #03 (chamber 02),
  #04 (chamber 03),
  #07 (chamber 06),
  #08 (chamber 07),
  #10 (chamber 09),
  #12 (chamber 11),
  #13 (chamber 12),
  #14 (chamber 13),
  #16 (chamber 15A),
  #18 (chamber 16),
  #19 (chamber 17),
  #20 (chamber 18A),
  #21 (chamber 18B)
  

• the map for "data" is (from left-to-right):
  

  1 digit: "#26 (escape 02)", "#24 (escape 00)"
  2 digit: "#22 (chamber 18C)", "#21 (chamber 18B)", "#06 (chamber 05)", "#25 (escape 01)"
  3 digit: "#23 (chamber 19)", "#20 (chamber 18A)", "#19 (chamber 17)", "#18 (chamber 16)"
  4 digit: "#17 (chamber 15B)", "#16 (chamber 15A)", "#15 (chamber 14)", "#14 (chamber 13)"
  5 digit: "#12 (chamber 11)", "#13 (chamber 12)", "#11 (chamber 10)", "#10 (chamber 09)"
  6 digit: "#09 (chamber 08)", "#08 (chamber 07)", "#07 (chamber 06)", "#05 (chamber 04)"
  7 digit: "#04 (chamber 03)", "#03 (chamber 02)", "#02 (chamber 01)", "#01 (chamber 00)"
  

• after you have learned which radios you have missed, use the table below for extra help

table

radio #01 (chamber 00, map testchmb_a_00)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #02 (chamber 01, map testchmb_a_00)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #03 (chamber 02, map testchmb_a_01)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #04 (chamber 03, map testchmb_a_01)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #05 (chamber 04, map testchmb_a_02)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #06 (chamber 05, map testchmb_a_02)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #07 (chamber 06, map testchmb_a_03)

LOCATION OF THE RADIO	LOCATION OF THE SIGNAL
in that gap behind the ceiling

radio #08 (chamber 07, map testchmb_a_03)

LOCATION OF THE RADIO	LOCATION OF THE SIGNAL
behind the stairs

radio #09 (chamber 08, map testchmb_a_04)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #10 (chamber 09, map testchmb_a_05)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #11 (chamber 10, map testchmb_a_06)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #12 (chamber 11, map testchmb_a_07)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #13 (chamber 12, map testchmb_a_07)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #14 (chamber 13, map testchmb_a_08)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #15 (chamber 14, map testchmb_a_09)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #16 (chamber 15a, map testchmb_a_10)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #17 (chamber 15b, map testchmb_a_10)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #18 (chamber 16, map testchmb_a_11)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #19 (chamber 17, map testchmb_a_13)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #20 (chamber 18a, map testchmb_a_14)

LOCATION OF THE RADIO	LOCATION OF THE SIGNAL
	need to hold it for a second

radio #21 (chamber 18b, map testchmb_a_14)

LOCATION OF THE RADIO	LOCATION OF THE SIGNAL
it is above the "box" where you to travel an energo-ball in

radio #22 (chamber 18c, map testchmb_a_14)

LOCATION OF THE RADIO	LOCATION OF THE SIGNAL
in that gap behind the ceiling

radio #23 (chamber 19, map testchmb_a_15)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #24 (escape 00, map escape_00)

LOCATION OF THE RADIO	LOCATION OF THE SIGNAL
at the start look for the stairs at the right, below them is the fence with a radio in vent

radio #25 (escape 01, map escape_01)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

radio #26 (escape 02, map escape_02)

LOCATION OF THE RADIO

LOCATION OF THE SIGNAL

extras

• if you need more screenshots and help, then check the guide by @lonerunner
  https://steamcommunity.com/sharedfiles/filedetails/?id=213131869
  
• if you are absolutely sure that you have collected all radios but still didn't get the achievement, then you have a bugged progress; in that case follow the guide by @Calmly_Frenetic
  https://steamcommunity.com/sharedfiles/filedetails/?id=419856706
  
• if you get tired of radio's music (upbeat salsa) and want to mute them off, then follow the guide by @Calmly_Frenetic
  https://steamcommunity.com/sharedfiles/filedetails/?id=432359161

if you want to thank me...

...then check my guide about fixing various game issues: launching, crashing, optimization, stuttering, gamepads, etc. the guide is huge, but the topic is broad to begin with
https://steamcommunity.com/sharedfiles/filedetails/?id=1935376439

[SgtDan]

Thanks a lot!

[Quambas]

For 17, open the hatch with the two switches; put a portal under the hatch and then jump off the ledge into another portal to throw yourself up and into the hatch. After it closes, the bottom will open with you and the radio.
For 23, place a portal above the radio and one above in the safe area. Jump through, then turn around and carefully grab the radio through the portal. You can do it without having to go all the way through. From there, place the radio on the ground and proceed normally. You can throw a portal ahead and then look back at where the radio is sitting, put a portal there and move the radio ahead of you.
Don't try to finesse jump while holding the radio, there is almost always a way to get the radio to the end and you will end up getting frustrated. Just get clever with portal placement, always leave the radio near or on a portal-able surface.

[Ryusae]

Used #2 and together with the screenshots it works fantastic!
Now I just have to find out how to get to Radio #17 and I'm done :D

[iCheese guy]

it mightve helped if 18b's ambiance wasnt so fucking loud lol... thanks

[tobipickle]

this is so helpful thank you

[Kukata]

thanks I needed the radio from testchamber 15... on the tutorial I watched the dude didnt show it

[PhattyMcgee]

I am sweeping the floor with this radio

[PhattyMcgee]

I did radio 14 but the light won't go green

[merlin.ulg]

How get radio#17? I have no idea

[merlin.ulg]

https://jsfiddle.net/xrudpnzg DON'T WORK