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

KF4MMM callsign genealogy

Currently held by MARSH, MONTY M

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 KF4MMM's current licensee, walking backwards.

  1. K4TWMactive· E
    WILSON, MICHAEL ANCgranted 2017-04-18
  2. KM4YMDcancelled· G
    WILSON, MICHAEL ANCgranted 2016-10-24cancelled 2017-04-18

Successor callsigns

Callsigns held now by people who previously held KF4MMM.

  1. WX4MMMactive· E
    WOODSON JR, ROBERT BNCgranted 2020-10-14
  2. K4TWMexpired· E
    MARSH, MONTY MNCgranted 2003-08-01cancelled 2015-08-04

All historical holders

Every license row we've seen with the callsign KF4MMM, oldest first.

  • WOODSON JR, ROBERT B NC
    1996-10-09 → cancelled 2001-01-03
  • MARSH, MONTY M NC
    2003-02-28 → cancelled 2003-08-01
← Back to KF4MMM License history →