Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ATF callsign genealogy
Currently held by HANSEN, JACK T
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 K4ATF's current licensee, walking backwards.
- HANSEN, JACK TFLgranted 2001-10-23cancelled 2002-03-06
Successor callsigns
Callsigns held now by people who previously held K4ATF.
No current licensee on record previously held this callsign.