Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4BUD callsign genealogy
Currently held by Humelsine, John B
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 WA4BUD's current licensee, walking backwards.
- Humelsine, John BFLgranted 2006-08-18cancelled 2006-09-06
Successor callsigns
Callsigns held now by people who previously held WA4BUD.
- Humelsine, John BAKgranted 2026-07-10
All historical holders
Every license row we've seen with the callsign WA4BUD, oldest first.
- HAMPTON, JAMES W SC1994-08-11 → cancelled 2006-08-12
- Humelsine, John B AK2026-06-23 → cancelled 2026-07-10