Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD0NN callsign genealogy
Currently held by CHAPMAN, DONALD W
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 KD0NN's current licensee, walking backwards.
- CHAPMAN, DONALD WTXgranted 2010-09-29cancelled 2015-04-14
Successor callsigns
Callsigns held now by people who previously held KD0NN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD0NN, oldest first.
- SMITH, WARREN E KS1992-09-01 → cancelled 2004-09-02
- CHAPMAN, DONALD W TX2025-03-19 active