Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N5TJO callsign genealogy
Currently held by O DONNELL, 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 N5TJO's current licensee, walking backwards.
- O Donnell, Timothy JNMgranted 2004-04-30cancelled 2005-06-18
Successor callsigns
Callsigns held now by people who previously held N5TJO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5TJO, oldest first.
- GAUDE JR, HAYWARD M LA1991-05-07 → cancelled 2003-05-08
- O DONNELL, TIMOTHY J NM2016-06-14 active