Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TWC callsign genealogy
Currently held by Tioga Wireless Club
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 W4TWC's current licensee, walking backwards.
- COOK, TIMOTHY WSCgranted 2023-07-12cancelled 2025-01-24
Successor callsigns
Callsigns held now by people who previously held W4TWC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4TWC, oldest first.
- Tioga Wireless Club FL2006-06-06 → cancelled 2018-06-07
- COOK, TIMOTHY W SC2025-01-24 active