Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4IUJ callsign genealogy
Currently held by HARMAN, GLENN G
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 W4IUJ's current licensee, walking backwards.
- Robert, YannigFLgranted 2023-11-01cancelled 2023-11-21
Successor callsigns
Callsigns held now by people who previously held W4IUJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4IUJ, oldest first.
- HARMAN, GLENN G FL1996-05-06 → cancelled 2008-05-07
- Robert, Yannig FL2023-11-21 active