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MMSI Required

Cobra Marine VHF Radio

Severity: Minor

Source: OnlyErrorCodes.com — Every error code. One place.

Cobra Marine VHF MMSI Required — Programming Fix

What Does This Error Mean?

'MMSI Required' on Cobra VHF means you don't have an MMSI programmed.
DSC distress and digital features won't work.
Register through your country's authority (BoatUS or FCC US, Ofcom UK), then program the 9-digit MMSI in the radio.
Cobra radios typically allow MMSI to be set only once — verify carefully before confirming.

Affected Models

  • Cobra MR HH-series
  • Cobra F77
  • Cobra F57
  • Cobra HH150 FLT
  • Cobra MR HH600

Common Causes

  • MMSI never registered or programmed
  • Radio reset cleared the MMSI
  • Replacement radio not yet programmed
  • Wrong MMSI entered earlier (radio locked)

How to Fix It

  1. Register an MMSI.

    BoatUS (US, free): boatus.com/MMSI.
    FCC (commercial/international): fcc.gov.
    Ofcom (UK): ofcom.org.uk.
    Industry Canada (Canada): canada.ca.
    Have boat info ready.
    Most online registrations complete in 10 minutes.

  2. Receive your MMSI.

    9-digit number assigned by the registration authority.
    Note it down clearly.
    Save the registration confirmation.

  3. Open Cobra MMSI programming.

    On Cobra VHF: Menu → MMSI Setup.
    Refer to your specific model manual for exact path.
    The radio prompts for the 9-digit number.

  4. Enter MMSI carefully.

    Use keypad to enter all 9 digits.
    Verify on screen before confirming.
    Cobra radios typically accept MMSI only once.
    Wrong entry locks the radio — would require Cobra service to reset.

  5. Verify and test.

    After confirming, MMSI displays on radio info.
    Test DSC by calling a friend's MMSI.
    Don't test the distress button — that's a real distress signal.
    Routine DSC test calls are the way to verify.

Frequently Asked Questions

Are Cobra VHF radios as good as Uniden or Standard Horizon?

Cobra is more budget-friendly than Standard Horizon or Icom but generally reliable.
Cobra MR HH-series handhelds are popular for value.
Higher-end recreational models (F77, MR HH600) have good DSC and GPS features.
Industry preference varies — all major brands meet maritime safety standards.

What if I'm not sure if I'll need DSC?

Register an MMSI anyway — it's free for recreational boaters.
You may not need DSC today, but if you ever venture offshore or need emergency communication, it's there.
The peace of mind is worth the 10 minutes of registration time.