Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0CSU callsign genealogy
Currently held by IRELAND, WINFIELD 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 W0CSU's current licensee, walking backwards.
- IRELAND, WINFIELD ECOgranted 2025-03-08
Successor callsigns
Callsigns held now by people who previously held W0CSU.
- IRELAND, WINFIELD ECOgranted 2025-03-08
All historical holders
Every license row we've seen with the callsign W0CSU, oldest first.
- LINDQUIST, EVERETT C MN1997-01-15 → cancelled 2009-01-16
- IRELAND, WINFIELD E CO2024-05-29 → cancelled 2025-03-08