Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3CO callsign genealogy
Currently held by NELSON, DOUGLAS A
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 W3CO's current licensee, walking backwards.
- Robertson, David KALgranted 2006-06-30cancelled 2008-12-30
Successor callsigns
Callsigns held now by people who previously held W3CO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3CO, oldest first.
- NELSON, DOUGLAS A TN1996-11-04 → cancelled 2008-11-05
- Robertson, David K AL2018-12-07 active