Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0SEC callsign genealogy
Currently held by Sieveke, Andrew T
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 W0SEC's current licensee, walking backwards.
- Johnson, GageNEgranted 2026-02-12cancelled 2026-04-07
Successor callsigns
Callsigns held now by people who previously held W0SEC.
- Sieveke, Andrew TCOgranted 2020-05-23
All historical holders
Every license row we've seen with the callsign W0SEC, oldest first.
- Sieveke, Andrew T CO2020-03-07 → cancelled 2020-05-23
- Johnson, Gage NE2026-04-07 active