Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AF4SK callsign genealogy
Currently held by HARTMAN, WILLIAM 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 AF4SK's current licensee, walking backwards.
- HARTMAN, WILLIAM EVAgranted 1997-04-30cancelled 2000-05-03
Successor callsigns
Callsigns held now by people who previously held AF4SK.
No current licensee on record previously held this callsign.