Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF6SF callsign genealogy
Currently held by Deifik, Jeff
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 AF6SF's current licensee, walking backwards.
- Deifik, JeffCAgranted 2005-08-02cancelled 2009-10-05
Successor callsigns
Callsigns held now by people who previously held AF6SF.
No current licensee on record previously held this callsign.