Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KD4ESS callsign genealogy
Currently held by ADAMS, DONALD J
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 KD4ESS's current licensee, walking backwards.
- Mazzoni, Deidre JSCgranted 2022-12-31cancelled 2023-03-09
Successor callsigns
Callsigns held now by people who previously held KD4ESS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4ESS, oldest first.
- ADAMS, DONALD J SC2011-08-03 → cancelled 2021-02-05
- Mazzoni, Deidre J SC2023-03-09 active