Metal Gear Solid 2: Sons of Liberty
Metal Gear Solid 2: Sons of Liberty

Codec Frequencies & Contacts

Unlock all essential Codec frequencies and contacts in Metal Gear Solid 2. Utilize strategic advice for both Tanker and Plant chapters to succeed.

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Codec Frequencies & Contacts

The Codec is your lifeline in the Big Shell, providing crucial information, mission updates, and even a few laughs. Knowing who to call and when can make the difference between success and a swift game over. This section details all essential Codec frequencies and contacts for both the Plant and Tanker chapters, along with strategic advice on when to utilize them.

Tanker Chapter (Solid Snake)

During the Tanker chapter, your primary Codec contacts are Otacon and the mysterious "???" (later revealed as Olga Gurlukovich). Keep these frequencies handy for tactical support and story progression.

  • Otacon (Hal Emmerich):
    • Frequency: 141.12
    • Role: Your primary support. Otacon provides mission objectives, environmental analysis, and technical assistance. He's also your go-to for saving your game.
    • Strategic Use:
      • Initial Contact: After the opening cinematic, Otacon will automatically contact you.
      • Saving Progress: Call him frequently, especially after clearing a difficult area or acquiring a new item.
      • Environmental Queries: If you're stuck on a puzzle or need information about a specific area (e.g., the cargo hold, engine room), call Otacon. He often has insights into the ship's layout or enemy patrols.
      • Boss Fights: He may offer tactical advice during certain encounters.
  • "???" (Olga Gurlukovich):
    • Frequency: 141.80
    • Role: A mysterious contact who provides cryptic warnings and sometimes unexpected assistance.
    • Strategic Use:
      • Post-Olga Boss Fight: After defeating Olga, she will contact you on this frequency with crucial information about the Marines and the situation on the Tanker.
      • Story Progression: Her calls are often tied to major plot developments. Pay close attention to her dialogue.

Plant Chapter (Raiden)

As Raiden, your Codec network expands significantly, offering a diverse range of support personnel. Understanding each contact's specialty is key to navigating the Big Shell effectively.

Primary Support Team

These are your core contacts for mission-critical information and general assistance.

  • Colonel Campbell:
    • Frequency: 140.85
    • Role: Your commanding officer. He provides primary mission objectives, updates, and overall strategic guidance.
    • Strategic Use:
      • Mission Briefings: He will contact you at the start of new objectives.
      • Saving Progress: Like Otacon, the Colonel is your main contact for saving the game. Call him regularly.
      • Clarification: If you're unsure about your next objective, call the Colonel.
  • Rosemary (Rose):
    • Frequency: 140.96
    • Role: Your girlfriend and data analyst. She provides psychological support, saves your game, and occasionally offers insights into the Big Shell's structure or personnel.
    • Strategic Use:
      • Emotional Support: Call her if Raiden's psyche is taking a hit (e.g., after a difficult encounter or prolonged solitude).
      • Saving Progress: Another reliable contact for saving your game.
      • Story Development: Her calls often delve into Raiden's past and their relationship, adding depth to the narrative.
  • Solid Snake (Iroquois Pliskin / Snake):
    • Frequency: 141.80 (Initially as Pliskin), then 140.15 (as Snake)
    • Role: Your invaluable field mentor and tactical expert. He provides practical advice, enemy intel, and often helps you strategize around obstacles.
    • Strategic Use:
      • Early Game (as Pliskin): He's crucial for navigating the early sections of the Plant. Call him for advice on dealing with specific enemy types or environmental hazards.
      • Later Game (as Snake): Once his identity is revealed, he becomes your most reliable source for combat and stealth tactics. He's particularly helpful during boss fights or when facing new enemy types.
      • Weapon & Item Strategy: He can offer tips on how to effectively use newly acquired weapons or items.
  • Otacon (Hal Emmerich):
    • Frequency: 141.12
    • Role: Technical support and environmental expert. He can analyze the Big Shell's systems, provide information on its layout, and assist with technological puzzles.
    • Strategic Use:
      • Technological Puzzles: If you encounter a locked door, a malfunctioning system, or need to disable something, Otacon is your first call.
      • Big Shell Layout: He can provide detailed blueprints and information about specific struts or connecting bridges.
      • EMPs & Electronics: When dealing with electronic countermeasures or devices, Otacon's knowledge is invaluable.

Specialized Contacts

These individuals offer unique perspectives and specialized knowledge that can be critical in specific situations.

  • Fatman:
    • Frequency: 141.43
    • Role: The bomb disposal expert. He provides information on bomb locations and disarming procedures.
    • Strategic Use:
      • Bomb Disposal Missions: This frequency becomes active once you begin the bomb disposal objectives. Call him for hints on bomb locations or specific disarming instructions.
      • Puzzle Solving: His cryptic clues often point to the environmental context of the bombs.
  • Peter Stillman:
    • Frequency: 140.25
    • Role: A bomb expert who provides initial guidance on bomb locations and characteristics.
    • Strategic Use:
      • Early Bomb Intel: He's your first point of contact for understanding the bomb threat. Call him for initial instructions and descriptions of the C4 devices.
      • Disarming Mechanics: He explains the basic mechanics of using the Coolant Spray to disarm the bombs.
  • Emma Emmerich (E.E.):
    • Frequency: 141.52
    • Role: Otacon's younger sister, a brilliant programmer and hacker. She's essential for bypassing advanced security systems.
    • Strategic Use:
      • Computer Systems: Once you rescue her, Emma becomes vital for hacking into the Big Shell's central computer or disabling specific security measures.
      • Cypher & Node Access: She's the key to accessing certain areas or information protected by advanced encryption.
  • President James Johnson:
    • Frequency: 140.48
    • Role: The captured President of the United States. He provides high-level intelligence and context about the Sons of Liberty and Arsenal Gear.
    • Strategic Use:
      • Post-Rescue: After rescuing him, he'll contact you with critical information about the ongoing plot.
      • Plot Exposition: His calls are primarily for advancing the main storyline and revealing major twists.
  • Fortune:
    • Frequency: 141.27
    • Role: The mysterious woman with seemingly supernatural luck. She offers cryptic warnings and insights into the Patriots' plans.
    • Strategic Use:
      • Late Game Intel: Her calls become active later in the game, providing crucial, albeit often unsettling, information about the true nature of the mission.
      • Psychological Warfare: Her dialogue often plays into Raiden's growing confusion and the game's themes of reality and manipulation.

Hidden & Contextual Frequencies

Some frequencies are not immediately obvious or only become active under specific circumstances. Experimentation can sometimes yield unexpected conversations.

  • Random Frequencies:
    • Experimentation: While not essential for progression, dialing random frequencies (e.g., 140.00, 140.01, etc.) can sometimes lead to humorous or bizarre conversations with unexpected characters, or simply static. This is a fun way to uncover hidden dialogue and Easter eggs.
    • Strategic Use: Primarily for entertainment and uncovering additional lore, not direct mission support.
  • "Ghost" Frequencies:
    • Unusual Events: During certain surreal or highly stressful moments in the game, the Codec may pick up strange, distorted voices or static on various frequencies. These are often tied to the game's meta-narrative and Raiden's psychological state.
    • Strategic Use: These are purely for atmospheric effect and story immersion, not for direct gameplay assistance.

Remember to check your Codec regularly, especially after major events or when you find yourself stuck. Your contacts are there to help you, and their insights are often vital for overcoming the challenges of the Big Shell.