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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N4MQU callsign genealogy

Currently held by GIBSON, MARK G

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 N4MQU's current licensee, walking backwards.

  1. AJ0Xactive· E
    Greenfield, Daniel SVAgranted 2022-06-03
  2. KY4ORcancelled· E
    Greenfield, Daniel SVAgranted 2020-03-13cancelled 2022-06-03
  3. KJ6IRVcancelled· E
    Greenfield, Daniel SVAgranted 2020-03-13cancelled 2022-04-18

Successor callsigns

Callsigns held now by people who previously held N4MQU.

  1. AJ0Xcancelled· E
    GIBSON, MARK GNCgranted 2012-06-05cancelled 2012-06-29

All historical holders

Every license row we've seen with the callsign N4MQU, oldest first.

  • GIBSON, MARK G NC
    2003-10-02 → cancelled 2012-06-05
  • GIBSON, MARK G NC
    2022-04-01 active
← Back to N4MQU License history →