Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4DON callsign genealogy
Currently held by MILDNER, HOWARD 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 KB4DON's current licensee, walking backwards.
- Hensley, Don ISCgranted 2010-06-04cancelled 2010-06-25
Successor callsigns
Callsigns held now by people who previously held KB4DON.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4DON, oldest first.
- MILDNER, HOWARD C FL1994-09-15 → cancelled 2006-09-16
- Hensley, Don I SC2020-04-02 active