Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4HM callsign genealogy
Currently held by SEALE, WILLIAM E
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 KD4HM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD4HM.
- SEALE, WILLIAM EMDgranted 2018-11-14cancelled 2020-04-21
All historical holders
Every license row we've seen with the callsign KD4HM, oldest first.
- SEALE, WILLIAM E MD2013-09-04 → cancelled 2018-11-14
- SEALE, WILLIAM E MD2020-04-21 active