Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5ZJJ callsign genealogy
Currently held by LEFLER, DEREK Z
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 K5ZJJ's current licensee, walking backwards.
- LEFLER, DEREK ZLAgranted 2024-10-29cancelled 2024-12-03
Successor callsigns
Callsigns held now by people who previously held K5ZJJ.
No current licensee on record previously held this callsign.