Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TJB callsign genealogy
Currently held by Blackwell, Timothy 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 W4TJB's current licensee, walking backwards.
- Blackwell, Timothy JSCgranted 2015-05-21cancelled 2015-06-16
Successor callsigns
Callsigns held now by people who previously held W4TJB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4TJB, oldest first.
- BRYANT, EDWARD L TN2007-07-25 → cancelled 2013-01-30
- Blackwell, Timothy J SC2025-05-20 active