Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KH7F callsign genealogy
Currently held by Chang, Alexander C S
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 KH7F's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KH7F.
No current licensee on record previously held this callsign.