Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TJB callsign genealogy
Currently held by Murtagh, James B
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 K4TJB's current licensee, walking backwards.
- Murtagh, James BNCgranted 2000-12-22cancelled 2001-09-22
Successor callsigns
Callsigns held now by people who previously held K4TJB.
No current licensee on record previously held this callsign.