Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0UM callsign genealogy
Currently held by Gonderinger, Kathleen
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 W0UM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W0UM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0UM, oldest first.
- VINCENT, CECIL L NY2003-04-08 → cancelled 2015-07-07
- Gonderinger, Kathleen CO2025-06-27 active