Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4TVW callsign genealogy
Currently held by APOTHEKER, KARL J
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 N4TVW's current licensee, walking backwards.
- VanWinkle, Teresa CKYgranted 2025-04-30cancelled 2025-05-20
Successor callsigns
Callsigns held now by people who previously held N4TVW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4TVW, oldest first.
- APOTHEKER, KARL J FL1998-05-26 → cancelled 2010-05-27
- VanWinkle, Teresa C KY2025-05-20 active