Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4PTT callsign genealogy
Currently held by Urban, Michael D
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 KD4PTT's current licensee, walking backwards.
- Urban, Michael DFLgranted 2018-06-21cancelled 2020-08-01
Successor callsigns
Callsigns held now by people who previously held KD4PTT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4PTT, oldest first.
- DOUGLAS, KEVIN M KY1992-06-23 → cancelled 2004-06-24
- Urban, Michael D FL2020-08-01 active