Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF7EFS callsign genealogy
Currently held by Petroff IV, Stanley A
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 KF7EFS'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 KF7EFS.
- Petroff IV, Stanley AORgranted 2024-02-01cancelled 2026-03-27