The Molecular Level is a Main Quest in Fallout 4 (FO4). Read on for a full The Molecular Level walkthrough and learn The Molecular Level location and rewards.

The Molecular Level Quest Summary

The Molecular Level Walkthrough

The Molecular Level Objectives

1. Have the Courser Chip Analyzed by Doctor Amari
2. Solve the Freedom Trail Code
3. Enter the Railroad HQ
4. Give the Courser Chip to Tinker Tom
5. Return to Virgil
6. Ask for Help in Building the Signal Interceptor
7. Construct the Signal Interceptor
8. Use the Signal Interceptor

Have the Courser Chip Analyzed by Doctor Amari

Return to Doctor Amari in the Memory Den at Goodneighbor to have the Courser Chip analyzed. Unfortunately, cracking a Courser Chip is way beyond her expertise and she'll advise you to seek out the Railroad for help.

Solve the Freedom Trail Code

In order to find the Railroad, you will need to solve the Freedom Trail Code at Boston Common to find out the location and password to their headquarters.

Alternatively, if you already know the Railroad HQ's location or if you don't want to do this mini-quest, you can skip this step.

Freedom Trail Code

Enter the Railroad HQ

Map Location
Overworld

The Railroad's HQ is at the basement of the Old North Church. You will need to input the code RAILROAD on the ring to open the entrance. To do this, spin the ring until a letter reaches the arrow at the top and hit the button at the center to enter that letter.

All Railroad Quests, Location, and Rewards

Give the Courser Chip to Tinker Tom

After speaking to Desdemona and being inducted into the Railroad, give the Courser Chip to Tinker Tom who will crack the chip's encryption and provide the code to you.

Return to Virgil

Travel back to the Glowing Sea and speak to Virgil. He will explain that you need to build a Signal Interceptor in order to use the code that will transport you inside the Institute.

Ask for Help in Building the Signal Interceptor

You can ask the Minutemen, Brotherhood of Steel, or the Railroad to help you in building the Signal Interceptor. Depending on your choice, they will send one of their technology experts of their faction to assist you.

All Factions List

Construct the Signal Interceptor

Go to your chosen faction's major settlement and begin constructing the Signal Interceptor. Here are all the parts and materials you need to build it:

• Reflector Platform - ×10 Aluminum, ×3 Circuitry, and ×5 Steel
• Control Console - ×2 Rubber, ×3 Copper, ×5 Steel, ×1 Biometric Scanner
• Relay Dish - ×3 Copper, ×3 Steel, ×6 Cloth, and ×3 Gold
• Molecular Beam Emitter - ×2 Rubber, ×10 Steel, ×5 Copper, ×1 Military-Grade Circuit Board, and ×3 Circuitry

In addition, you will also need to attach cable wires to link the parts together and power them up using generators.

List of All Crafting Material IDs

Use the Signal Interceptor

After successfully building a fully powered Signal Interceptor, tell the faction's expert that you're ready, then step onto the teleporter's platform to be transported to the Institute.

The Molecular Level Location

Where to Start The Molecular Level

Map View	Greenetech Genetics
Quest Giver	Automatically starts after completing Hunter/Hunted Main Quest.

Fallout 4 Related Guides

All Main Quests List

All Main Quests