uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KI4ZDD callsign genealogy

Currently held by Dunn, Michael C

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 KI4ZDD's current licensee, walking backwards.

  1. K4MCJcancelled· T
    Dunn, Michael CTNgranted 2017-02-07cancelled 2017-08-19

Successor callsigns

Callsigns held now by people who previously held KI4ZDD.

  1. KI4MCDactive· G
    DUNN, MICHAEL CTNgranted 2024-09-13
  2. K4MCJcancelled· T
    Dunn, Michael CTNgranted 2017-02-07cancelled 2017-08-19
  3. K1MCDcancelled· T
    Dunn, Michael CTNgranted 2008-09-03cancelled 2010-12-14

All historical holders

Every license row we've seen with the callsign KI4ZDD, oldest first.

  • Dunn, Michael C TN
    2007-08-29 → cancelled 2008-09-03
  • Dunn, Michael C TN
    2013-05-14 → cancelled 2017-02-07
  • DUNN, MICHAEL C TN
    2017-08-19 → cancelled 2024-09-13
← Back to KI4ZDD License history →