Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4EFZ callsign genealogy
Currently held by Jackson Jr, Leland A
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 W4EFZ's current licensee, walking backwards.
- Jackson Jr, Leland ASCgranted 1995-11-28cancelled 2003-05-30
Successor callsigns
Callsigns held now by people who previously held W4EFZ.
No current licensee on record previously held this callsign.