Confidence: Medium · Source: FCC ULS · As of 2026-09-11
WB4DOC callsign genealogy
Currently held by HOLLIDAY, DERYL 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 WB4DOC's current licensee, walking backwards.
- HOLLIDAY, DERYL BNCgranted 2016-05-18cancelled 2019-08-10
Successor callsigns
Callsigns held now by people who previously held WB4DOC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB4DOC, oldest first.
- ANDERSON JR, JOHN E GA1994-11-18 → cancelled 2006-11-21
- HOLLIDAY, DERYL B NC2019-08-10 active