Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4HAK callsign genealogy
Currently held by OLDHAM, GREGORY A
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 KB4HAK's current licensee, walking backwards.
- Oldham, Gregory ANCgranted 2022-12-17cancelled 2023-01-06
Successor callsigns
Callsigns held now by people who previously held KB4HAK.
No current licensee on record previously held this callsign.