Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4KW callsign genealogy
Currently held by THELEMANN, ERNEST C
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 W4KW's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4KW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4KW, oldest first.
- THELEMANN, ERNEST C FL1997-09-30 → cancelled 2002-01-30
- Noll, Bertram B TN2023-11-28 active