Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TWR callsign genealogy
Currently held by Robbins Jr, Thomas W
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 K4TWR's current licensee, walking backwards.
- KK4IFPcancelledTWR Radio ClubNCgranted 2012-04-02cancelled 2020-01-04
Successor callsigns
Callsigns held now by people who previously held K4TWR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4TWR, oldest first.
- Robbins Jr, Thomas W GA2004-02-07 → cancelled 2016-02-09
- TWR Radio Club NC2020-01-04 active