Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD7DFJ callsign genealogy
Currently held by LINDHOLM, FRANK D
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 KD7DFJ'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 KD7DFJ.
- K7MARactiveMARION COUNTY AMATEUR RADIO EMERGENCY SERVORgranted 2019-06-11