The Molecular Level

Main Quest
Entrance to the Institute
Goodneighbor, then home locations of either the Railroad, Brotherhood of Steel, or Minutemen
Doctor Amari, then Desdemona, Paladin Danse, or Preston Garvey
Previous Quest
Next Quest
The Molecular Level is a Quest in Fallout 4. Please note this quest is buggy. See the comments at the bottom of the page for player suggestions on how to workaround the issues.

The Molecular Level Information


  1. Have the Courser Chip analyzed
  2. Search the Railroad HQ
  3. Analyze the Courser Chip
  4. Return to Virgil
  5. Get help to build the signal interceptor
  6. (Optional) Talk to the Brotherhood
  7. (Optional) Talk to the Minutemen
  8. (Optional) Talk to the Railroad
  9. Talk to [faction scientist]
  10. Build the reflector platform
  11. Build the beam emitter
  12. (Optional) Search military sites for a circuit board
  13. Build the relay dish
  14. (Optional) Search telecom sites for a sensor module
  15. Build the console
  16. (Optional) Search hospitals for a Biometric Scanner
  17. Power up the signal interceptor
  18. Talk to [faction scientist]
  19. Use the signal interceptor



  • N/A


Rad Resist.png After retrieving the Courser Chip, go see Doctor Amari at the Memory Den in Goodneighbor. She will recommend that you contact The Railroad.

NOTE: If you have not contacted the Railroad at this time, you must complete the quest Road to Freedom. You will not be able to progress this quest until you do so. This quest is also your last opportunity to secure support from the Minutemen and Brotherhood of Steel so if you have not developed your standing with that faction, now is the time to do so. See the Quests page for quests related to the Factions.

Rad Resist.png When ready, enter the church to gain entry to the The Railroad base. Speak with their leader, Desdemona, and have the Courser Chip analyzed by Tinker Tom. Afterwards, you may leave this location via the escape tunnel so that you can remove the chain to the secret door. Doing so allows you easier access the next time you wish to return to their base of operations.

Rad Resist.png Return to Virgil's location in the Glowing Sea. After explaining to him the present situation, he will give you Signal Interceptor Plans.

Rad Resist.png Now that you have the plans in your hands, you can begin the process of building it. There are 4 ways to go about this, each presumes that you are in good standing with the respective faction. Note that each faction will ask you for information on the Institute, so if you plan on working with the Institute in the future keep these requests for espionage in mind.

Option 1: Brotherhood of Steel

Rad Resist.png Go to the Cambridge Police Station, taking out Feral Ghouls in conjunction with the Brotherhood of Steel quest Fire Support. Talk to Paladin Danse about the interceptor you plan to build and he will provide you with support after you complete the quest Call to Arms. You will be asked to provide info related to the Institution via the quest From Within.

Rad Resist.png Upon completing his request, you can speak to Proctor Ingram the faction scientist on how to build the signal interceptor.

Option 2: Minutemen

Rad Resist.png If you have finished the quest When Freedom Calls, you can enlist the help of Preston Garvey. Head to his location in Sanctuary or the Settlement you sent him to and speak with him about the interceptor. He will ask you for some help in exchange and you will then have to complete the quest The First Step. You will be asked to provide info related to the Institution via the quest Inside Job.

Rad Resist.png Upon completing his request, you can speak to Sturges the faction scientist on how to build the signal interceptor.

Option 3: The Railroad

Rad Resist.png Go to the Old North Church and speak with Desdemona about the interceptor. She will ask you to join the cause via the quest Tradecraft with the Companion Deacon before agreeing to help you. You will be asked to provide info related to the Institution via the quest Underground Undercover.

Rad Resist.png Upon completing her request, you can speak to Tinker Tom the faction scientist on how to build the signal interceptor.

Option 4: Build It Yourself

Rad Resist.png You may choose to eschew the help of the Factions and build the interceptor yourself, at any Workshop that you have found. You will clear an area in one of your Settlements and begin working.

Constructing the Stabilized Reflector Platform




Upon finishing speak with your respective faction scientist to learn more about special materials needed for the beam emitter, relay dish and console.

Constructing the Beam Emitter




Constructing the Relay Dish




Constructing the Console




Putting It All Together

Rad Resist.png Once all the components are constructed, access the generators in your workshop and build the generators you need to power the interceptor.

Building Teleporter Guide

external image 1DqvVmQ.jpg
Attach wires:
Generator -> Generator -> Generator -> Generator -> Generator -> Console -> Relay Dish -> Beam Emitter

If you're worried about cable management, here's a clean setup :
(All the Generators) -> Power Pylon -> Console -> Relay Dish -> Beam Emitter

Sometimes when you adjust the setup, you will be unable to place the Stabilised Reflector Platform under the Beam Emitter. Try moving the Beam Emitter to an isolated spot, make sure that there is nothing underneath the Beam Emitter (eg. floors, rugs, etc.) store the reflector platform in the workshop then use the menu to place it underneath the beam emitter. You can then hold the place object button to move the Emitter and Platform together back to the desired spot.

Video Walkthrough

Molecular Level
The Molecular Level Walkthrough

Notes & Notable Loot

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    • Anonymous

      30 Jul 2018 02:03  

      what you can do instead of doing the quest its self, you can install a mod called quest manipulation program and select The molecular level quest from the non-faction main quests tab and select complete. This should teleport you into the institute where you can continue the quest line from there. unfortunately if you are on xbox1 or ps4( maybe, I don't own one so I don't know if this applies) achievements will be disabled. I hope this helps.

      • Anonymous

        09 Jul 2018 17:40  

        The stabilizer platform is the only thing that shows up in the special tab, and when I build it, the quest log isn't uploaded. HELP!

        • Anonymous

          27 Nov 2016 01:57  

          I'm having trouble, After I built the very first objective item the objective wouldn't complete and I couldn't talk to sturges after building it. anyone know of a fix that could help?

          • Anonymous

            Helping you guys28 Aug 2016 12:17  

            Guys, you need a total of 5 medium generators and one small generator. Small to power the control console, 4 medium to power the emitter, and one medium to power the satellite dish thing. All the generators should be linked together with a wire, then attached the rest of the stuff to that generator. Hope this helps.

            • Anonymous

              Im stuck28 Aug 2016 12:17  

              I did everything it told me to do but at the signal interceptor its all powered up with the core in the middle of the big thing but its not progressing the quest.

              • Anonymous

                Building the Reflector Platform28 Aug 2016 12:17  

                No matter how many I build or how many times I store it and place it back down it won't let me progress. Can someone please help me

                • Anonymous

                  Please help! Problem with "The Molecular Level" quest!28 Aug 2016 12:17  

                  I had completed building and powering the Signal Interceptor, but the game will not register that I had powered the Molecular Beam Emitter or the Stabilized Reflector Platform. I have 5 medium generators and 1 small generator. Everything is connected with wire and everything is powered. The quest is gliched.

                  • Anonymous

                    Final fix28 Aug 2016 12:17  

                    Figured it out. Just store the beam emitter while the platform thing is still down underneath it and place the beam emitter back down on it. I was *****ing with this thing for a good two hours hope it works for you guys

                    • Anonymous

                      just follow the setup! then if youre still having trouble!28 Aug 2016 12:17  

                      Generator -> Generator -> Generator -> Generator -> Generator -> Console -> Relay Dish -> Beam Emitter >> store the beam emitter legs in warehouse then replace it and re-wire it, it should then power up again and say quest completed

                      • Anonymous

                        Stuck on brotherhood part28 Aug 2016 12:17  

                        I got to where I can build the thing, but the airport terminal is inaccessable and I can't get into the workshop area. Please send help

                        • Anonymous

                          Building it by yourself28 Aug 2016 12:17  

                          I can't seem to find a way to build everything by myself. The components do not appear at the workshop unless I contact one of the factions, but I'm wondering if I do that, then travel to one of my settlements an build it there, would it still be tied to that faction?

                          • Anonymous

                            Powered up, talked to dez but tinker tom just walks away and i cant complete the quest28 Aug 2016 12:17  

                            Basically the title, i built it in sanctuary, everything is powered up, i talk to dez about the patriot and when she calls for tinker tom either hes not there or he walks away. i hated that mother*****er even before this *****ty bug and now i hate him more. help pls i tried everything like reloading closing the game and this *****.

                            • Anonymous

                              Brotherhood of Steel.28 Aug 2016 12:17  

                              I finished the entire structure and everything. It now tells me to speak with Elder Maxson who is locked away in the Warehouse that has an inaccessible terminal and two doors that you can't access. Anyone know a solution for PS4?

                              • Anonymous

                                where28 Aug 2016 12:17  

                                i have question where do u find all the parts when u build it yourself? i only have the bas to the teleporter

                                • Anonymous

                                  Ok but what's the difference between factions28 Aug 2016 12:17  

                                  I want to know what's the difference if I go with either the brotherhood, railroad, or minutemen

                                  • Anonymous

                                    power of the signal interceptor28 Aug 2016 12:17  

                                    So I have everything built and power going to everything . I have more then enough power and the stabilized reflector platform isn't powering up . I seen videos and it powers up right away and it's not happening for me

                                    • Anonymous

                                      Bugs28 Aug 2016 12:17  

                                      The quest will not progress for me after I built all the components, everything looks powered up and there is plenty of power but the objective won't clear...

                                      • Anonymous

                                        I can't get the ***** thing to work?28 Aug 2016 12:17  

                                        I have folllowed the walkthrough exactly. Everything is arranged as it should be, and the device appears active. But it doesn't register as having been completed, and I am unable to progress the quest. Fffffffff

                                        • Anonymous

                                          Best companion for Institute missions28 Aug 2016 12:17  

                                          Im guessing if I take someone who is associated with one of the factions I will need to choose them to assist me and I don't really want to do that so I was thinking mccready or piper but they aren't the best fighters!

                                          • Anonymous

                                            Teleportation Glitch28 Aug 2016 12:17  

                                            I completely built the device with the minutemen and it works. But every time I step on the platform it teleports me underneath the institute and I fall endlessly and then die. Anyone help?

                                            • Anonymous

                                              Easy28 Aug 2016 12:17  

                                              A biometric scanner and a military grade circuit can be found by going back to Virgils cave and shooting the turrets down easily, you're welcome.

                                              • Anonymous

                                                Falling.28 Aug 2016 12:17  

                                                I'm doing this for the brotherhood and built it at the airport. Every time i enter the thing it'll take me to the institue however, there's no actual loading screen (the pic is there), I can move (sort of), there's no floor, walls are missing, items and people falling and I can still talk to people if I can reach them (everything that falls teleports back up then drops again).... This is reall starting to piss me off.

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