Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4OCD callsign genealogy
Currently held by JACOBI, WARREN 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 W4OCD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4OCD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4OCD, oldest first.
- JACOBI, WARREN E FL1997-01-07 → cancelled 2009-01-08
- Wilson, Stephen S AL2020-10-27 active