uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KM4RMM callsign genealogy

Currently held by Emerson, Mary A

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 KM4RMM's current licensee, walking backwards.

  1. KX9EVVactive· T
    Emerson, Mary AILgranted 2021-08-13

Successor callsigns

Callsigns held now by people who previously held KM4RMM.

  1. KX9EVVactive· T
    Emerson, Mary AILgranted 2021-08-13
  2. KX9EVVcancelled· T
    Emerson, Mary AFLgranted 2019-11-15cancelled 2020-10-20
  3. KX9AOCcancelled· T
    Emerson, Mary AFLgranted 2018-11-14cancelled 2019-02-14
  4. KX9AOCcancelled· T
    McManaway, Mary AFLgranted 2016-10-21cancelled 2016-11-08

All historical holders

Every license row we've seen with the callsign KM4RMM, oldest first.

  • McManaway, Mary A FL
    2016-02-25 → cancelled 2016-10-21
  • Emerson, Mary A FL
    2017-02-04 → cancelled 2018-11-14
  • Emerson, Mary A FL
    2019-10-25 → cancelled 2019-11-15
  • Emerson, Mary A FL
    2020-10-20 → cancelled 2021-08-13
← Back to KM4RMM License history →