Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9HFF callsign genealogy
Currently held by TRIMBLE IV, MASON H
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 KD9HFF's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KD9HFF.
- TRIMBLE IV, MASON HILgranted 2016-11-15cancelled 2021-07-09