Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF7SZB callsign genealogy
Currently held by Oberholtzer, John K
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 KF7SZB'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 KF7SZB.
- Oberholtzer, John KWAgranted 2022-02-02