Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AK6JF callsign genealogy
Currently held by Czerwinski, John
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 AK6JF's current licensee, walking backwards.
- Czerwinski, JohnCAgranted 2024-05-30cancelled 2024-09-30
Successor callsigns
Callsigns held now by people who previously held AK6JF.
No current licensee on record previously held this callsign.