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

K4MRR callsign genealogy

Currently held by RILEY, MICHAEL R

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 K4MRR's current licensee, walking backwards.

  1. KX1Bactive· E
    King, Bryan PNHgranted 2019-10-29
  2. K1SNHactive· G
    Jagatic, Tom NNHgranted 2020-04-25
  3. W1KKDactive· T
    Cox, Timothy HOHgranted 2022-06-14
  4. K0THCcancelled· T
    Cox, Timothy HOHgranted 2018-07-24cancelled 2022-06-14
  5. KE8KEGcancelled· T
    Cox, Timothy HOHgranted 2018-07-02cancelled 2018-07-24

Successor callsigns

Callsigns held now by people who previously held K4MRR.

No current licensee on record previously held this callsign.

← Back to K4MRR License history →