Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4RNR callsign genealogy
Currently held by BUCHANAN, THOMAS 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 W4RNR's current licensee, walking backwards.
- Warner, Daniel ICOgranted 2019-04-09cancelled 2019-06-04
Successor callsigns
Callsigns held now by people who previously held W4RNR.
- Ortega, Michael ATXgranted 2017-05-16
All historical holders
Every license row we've seen with the callsign W4RNR, oldest first.
- BUCHANAN, THOMAS B NC2004-11-18 → cancelled 2017-01-26
- Ortega, Michael A TX2017-03-24 → cancelled 2017-05-16
- Warner, Daniel I CO2019-06-04 active