Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5JTP callsign genealogy
Currently held by KASPRZYK JR, EMIL F
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 K5JTP's current licensee, walking backwards.
- PLESKO, JOHN TTXgranted 2017-06-14cancelled 2018-02-03
Successor callsigns
Callsigns held now by people who previously held K5JTP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5JTP, oldest first.
- KASPRZYK JR, EMIL F TX1996-06-18 → cancelled 2008-06-19
- PLESKO, JOHN T TX2018-02-03 active