Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4PT callsign genealogy
Currently held by BUCK JR, FRANK M
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 KJ4PT's current licensee, walking backwards.
- Tobin, Patrick ATNgranted 2010-02-12cancelled 2016-08-23
Successor callsigns
Callsigns held now by people who previously held KJ4PT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4PT, oldest first.
- BUCK JR, FRANK M GA1987-08-11 → cancelled 1999-08-16
- Tobin, Patrick A TN2026-06-24 active