Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4DJD callsign genealogy
Currently held by DUBUQUE, DONALD J
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 W4DJD's current licensee, walking backwards.
- DUBUQUE, DONALD JVAgranted 2003-10-22cancelled 2009-06-26
Successor callsigns
Callsigns held now by people who previously held W4DJD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4DJD, oldest first.
- JORDAN, WILLIAM F FL1997-05-09 → cancelled 2009-05-12
- DUBUQUE, DONALD J MD2019-05-04 active