Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4OCR callsign genealogy
Currently held by Duncan, Donald W
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 W4OCR's current licensee, walking backwards.
- Duncan, Donald WTNgranted 2013-01-17cancelled 2016-06-14
Successor callsigns
Callsigns held now by people who previously held W4OCR.
No current licensee on record previously held this callsign.