Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4DDF callsign genealogy
Currently held by HEIDTMANN IV, HENRY G
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 KI4DDF'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 KI4DDF.
- HEIDTMANN IV, HENRY GVAgranted 2024-12-28