Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0RTX callsign genealogy
Currently held by THOMPSON, KARIN K
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 K0RTX's current licensee, walking backwards.
- Ranard, Katherine MCOgranted 2025-05-28cancelled 2025-06-17
Successor callsigns
Callsigns held now by people who previously held K0RTX.
- THOMPSON, KARIN KGAgranted 2021-09-03
All historical holders
Every license row we've seen with the callsign K0RTX, oldest first.
- THOMPSON, KARIN K GA2012-07-03 → cancelled 2021-09-03
- Ranard, Katherine M CO2025-06-17 active