Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF7OJB callsign genealogy
Currently held by Heil, F Charles W
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 KF7OJB's current licensee, walking backwards.
- Heil, F Charles WORgranted 2011-03-29cancelled 2011-05-20
Successor callsigns
Callsigns held now by people who previously held KF7OJB.
- Heil, F Charles WORgranted 2011-03-29cancelled 2011-05-20