Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9JTT callsign genealogy
Currently held by Theby IV, Joseph T
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 W9JTT's current licensee, walking backwards.
- Theby IV, Joseph TINgranted 2015-01-05cancelled 2015-02-03
Successor callsigns
Callsigns held now by people who previously held W9JTT.
No current licensee on record previously held this callsign.