Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ANN callsign genealogy
Currently held by THOMPSON, SYLVIA A
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 K4ANN's current licensee, walking backwards.
- THOMPSON, SYLVIA ANCgranted 2001-06-18cancelled 2011-04-23
Successor callsigns
Callsigns held now by people who previously held K4ANN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ANN, oldest first.
- CHERRY, ANN L OK1998-01-07 → cancelled 2010-01-08
- THOMPSON, SYLVIA A NC2021-02-02 active