Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4SF callsign genealogy
Currently held by VOSHELL, JOHN E
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 KF4SF's current licensee, walking backwards.
- WA4ONAno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF4SF.
- VOSHELL, JOHN ESCgranted 2018-10-19