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Marine Corps MOS · Communications

0627 Satellite Transmissions System Operator

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

A Satellite Transmissions System Operator installs, operates, and maintains wideband satellite communications and troposcatter transmission systems. This operator works with systems across multiple frequency bands, spectrum analysis tools, communications planning hardware and software, transmission security, communications security, and approved positioning, navigation, and timing devices.

Minimum clearance: Secret

Minimum ASVAB: CL 100 or EL 100

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: navmc-1200-1l-fy26 (source date 2025-03). Policy applicability has not been established.

See if you would hit this score: free ASVAB practice test

Core Skills

  • Troposcatter system installation and maintenance
  • Radio-frequency spectrum analysis using specialized tools
  • Transmission security and communications security practices

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Radio, Cellular, and Tower Equipment Installers and Repairers

Installing and maintaining multiband SATCOM and troposcatter systems, together with spectrum-analysis experience, transfers directly to radio transmission equipment installation and testing.

How to prepare: Complete a hands-on exercise installing a commercial antenna feed line and testing its transmission components with sweep-testing equipment.

What the civilian work involves
  • Run appropriate power, ground, or coaxial cables.
  • Test operation of tower transmission components, using sweep testing tools or software.
  • Install all necessary transmission equipment components, including antennas or antenna mounts, surge arrestors, transmission lines, connectors, or tower-mounted amplifiers (TMAs).
Civilian tools and software (examples)
  • AERONET calculator

Telecommunications Equipment Installers and Repairers, Except Line Installers

SATCOM and troposcatter installation, operation, and maintenance provide a practical foundation for installing and verifying civilian telecommunications equipment.

How to prepare: Practice isolating faults in commercial telecommunications equipment using circuit diagrams and test meters, then document a post-repair functional test.

What the civilian work involves
  • Test circuits and components of malfunctioning telecommunications equipment to isolate sources of malfunctions, using test meters, circuit diagrams, polarity probes, and other hand tools.
  • Test repaired, newly installed, or updated equipment to ensure that it functions properly and conforms to specifications, using test equipment and observation.
  • Assemble and install communication equipment such as data and telephone communication lines, wiring, switching equipment, wiring frames, power apparatus, computer systems, and networks.
Civilian tools and software (examples)
  • Cisco IOS

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Getting Started

  • Associate Electronics Technician (CETa)

    Validate electronics theory, circuit knowledge, test-equipment fundamentals, and telecommunications fundamentals relevant to installation and repair work.

    For: Radio, Cellular, and Tower Equipment Installers and Repairers, Telecommunications Equipment Installers and Repairers, Except Line Installers

Notes & Sources

Evidence for this guidance (4 documents)
  1. NAVMC 1200.1L (FY26, in force): MOS 0627

    [1] MOS 0627 section "a. Summary"; cached text line 30105; NAVMC 1200.1L signed 2025-03-07, in force until 2026-10-01

    Supports: Troposcatter system installation and maintenance, Radio-frequency spectrum analysis using specialized tools, Transmission security and communications security practices, Radio, Cellular, and Tower Equipment Installers and Repairers (O*NET 49-2021.00), Telecommunications Equipment Installers and Repairers, Except Line Installers (O*NET 49-2022.00)

  2. O*NET: Radio, Cellular, and Tower Equipment Installers and Repairers

    [2] O*NET 30.3 occupational data

    Supports: Radio, Cellular, and Tower Equipment Installers and Repairers (O*NET 49-2021.00)

  3. O*NET: Telecommunications Equipment Installers and Repairers, Except Line Installers

    [3] O*NET 30.3 occupational data

    Supports: Telecommunications Equipment Installers and Repairers, Except Line Installers (O*NET 49-2022.00)

  4. COOL credential mapping: Associate Electronics Technician (CETa)

    [4] 0627 cached COOL credential feed

    Supports: Associate Electronics Technician (CETa)

    [5]ETA International: Associate Certified Electronics Technician · CETa description and CETa Exam Info; retrieved 2026-09-23

    Supports: Associate Electronics Technician (CETa)

Defense contractor jobs for 0627

Predecessor codes

Historical codes with documented links to 0627. Each history page explains the change.

0624Title not stated in source2821Technical Controller (PMOS)

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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