COMDTINST 2400.1I — Electromagnetic Spectrum Management Operations In The Electromagnetic Environment

COMDTINST 2400.1I governs Coast Guard electromagnetic spectrum operations, frequency requirements, interference reporting, and interoperability.

Search COMDTINST 2400.1I

  • Publication number: COMDTINST 2400.1I
  • Title: ELECTROMAGNETIC SPECTRUM MANAGEMENT OPERATIONS IN THE ELECTROMAGNETIC ENVIRONMENT
  • Date: 9/14/2022
  • Proponent: CG-672

View COMDTINST 2400.1I on armypubs.army.mil


The publication covers spectrum-dependent systems and equipment, frequency authorizations, electromagnetic interference, emergency spectrum use, and interoperability. It requires Coast Guard units to comply with its policies and obtain authorization before radiating on any RF spectrum.

Applies to: All Coast Guard unit commanders, commanding officers, officers-in-charge, deputy/assistant commandants, chief of headquarter directorates must comply with the policies contained.

Topics covered

  • Electromagnetic spectrum operations
  • Spectrum-dependent systems and equipment
  • Frequency authorizations
  • Electromagnetic interference reporting
  • Emergency spectrum use
  • Non-licensed devices
  • Federal and non-federal interoperability

Questions and answers

Who must comply with COMDTINST 2400.1I?

All Coast Guard unit commanders, commanding officers, officers-in-charge, deputy/assistant commandants, chief of headquarter directorates must comply with the policies contained. (paragraph 2)

What authorization is required before radiating on RF spectrum?

All CG units are required to obtain authorization from C5ISCESD-ASB-SM prior to radiating on any RF spectrum. (paragraph 1)

What happens when a Part 15 device causes interference?

A Part 15 device causing EMI to an authorized licensed user shall cease transmissions immediately without recourse or regard to the operational impact. (paragraph 2)

Are non-licensed devices authorized for safety-of-life communications systems?

Non-licensed devices are not authorized for any planned communications system involving the safety of life or protection of property. (paragraph 2)

How long must EMI reports be retained?

All EMI reports shall be retained for three years. (paragraph 7)

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