Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DBF callsign genealogy
Currently held by FRANKS JR, DONALD B
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 W4DBF's current licensee, walking backwards.
- FRANKS JR, DONALD BSCgranted 2007-04-09cancelled 2014-12-09
Successor callsigns
Callsigns held now by people who previously held W4DBF.
- ROBINSON, MICHAEL DKYgranted 2019-09-18
All historical holders
Every license row we've seen with the callsign W4DBF, oldest first.
- Robinson, Michael D KY2009-04-17 → cancelled 2009-10-23
- FRANKS JR, DONALD B SC2014-12-09 active