Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9HDF callsign genealogy
Currently held by KING, JAMES 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 K9HDF's current licensee, walking backwards.
- Westlund, Christina LWIgranted 2008-04-04cancelled 2017-05-09
Successor callsigns
Callsigns held now by people who previously held K9HDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9HDF, oldest first.
- KING, JAMES A WI2012-05-29 → cancelled 2016-09-08
- Westlund, Christina L WI2017-05-09 active