Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ7LFK callsign genealogy
Currently held by HASSLER, JASON
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 KJ7LFK's current licensee, walking backwards.
- HASSLER, JASONIDgranted 2014-04-05cancelled 2019-12-13
Successor callsigns
Callsigns held now by people who previously held KJ7LFK.
No current licensee on record previously held this callsign.