Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6JFS callsign genealogy
Currently held by Stelmack, John F
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 K6JFS's current licensee, walking backwards.
- Stelmack, John FALgranted 2009-02-24cancelled 2009-03-14
Successor callsigns
Callsigns held now by people who previously held K6JFS.
- Stelmack Mr., John FALgranted 2021-08-31