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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

N6ACK callsign genealogy

Currently held by ACKERMAN, MATTHEW L

The FCC publishes a previous_call_sign on every amateur license — a self-link to the licensee's prior callsign. Following those links produces the chain below.

Previous callsigns

Older callsigns held by N6ACK's current licensee, walking backwards.

  1. ND6Cactive· E
    Cheng, Andy RCAgranted 2025-11-25
  2. NM0Kactive· E
    Anthony, Michael AALgranted 2018-01-09
  3. KN4FNDcancelled· E
    Anthony, Michael AALgranted 2017-08-24cancelled 2018-01-09

Successor callsigns

Callsigns held now by people who previously held N6ACK.

  1. ND6Ccancelled· E
    ACKERMAN, MATTHEW LCAgranted 2013-02-12cancelled 2013-11-30

All historical holders

Every license row we've seen with the callsign N6ACK, oldest first.

  • ACKERMAN, MATTHEW L CA
    2012-02-11 → cancelled 2013-02-12
  • ACKERMAN, MATTHEW L CA
    2023-09-07 active
← Back to N6ACK License history →