Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DEF callsign genealogy
Currently held by FRANKLIN III, DAVID E
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 W4DEF's current licensee, walking backwards.
- FRANKLIN III, DAVID ENCgranted 2005-04-18cancelled 2006-08-26
Successor callsigns
Callsigns held now by people who previously held W4DEF.
No current licensee on record previously held this callsign.