Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9GDT callsign genealogy
Currently held by TRAPP, GLENN D
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 W9GDT's current licensee, walking backwards.
- TRAPP, GLENN DWIgranted 2010-09-27cancelled 2014-09-16
- N5HAEno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held W9GDT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9GDT, oldest first.
- FEKETE, JULIUS WI1988-05-24 → cancelled 2000-05-25
- TRAPP, GLENN D WI2024-07-10 active