Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4YZJ callsign genealogy
Currently held by Johnson, Jeffrey
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 W4YZJ's current licensee, walking backwards.
- Johnson, JeffreyALgranted 2011-12-05cancelled 2012-03-10
Successor callsigns
Callsigns held now by people who previously held W4YZJ.
No current licensee on record previously held this callsign.