Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4PLC callsign genealogy
Currently held by Umsted, Patrick 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 K4PLC's current licensee, walking backwards.
- Umsted, Patrick EGAgranted 2024-09-18cancelled 2024-10-08
Successor callsigns
Callsigns held now by people who previously held K4PLC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4PLC, oldest first.
- CANTRELL, PATRICIA L SC2011-03-10 → cancelled 2023-03-11
- Umsted, Patrick E GA2024-10-08 active