Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1HAJ callsign genealogy
Currently held by PHAM, HUBERT V
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 KB1HAJ's current licensee, walking backwards.
- Wang, BodeCAgranted 2025-11-26cancelled 2025-12-16
Successor callsigns
Callsigns held now by people who previously held KB1HAJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB1HAJ, oldest first.
- PHAM, HUBERT V MA2001-07-19 → cancelled 2013-07-20
- Wang, Bode CA2025-12-16 active