Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ5XT callsign genealogy
Currently held by ZAPATA, RUBEN D
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 KJ5XT's current licensee, walking backwards.
- Johnson, Charles DTXgranted 2024-05-08cancelled 2024-08-13
Successor callsigns
Callsigns held now by people who previously held KJ5XT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ5XT, oldest first.
- ZAPATA, RUBEN D TX2004-04-21 → cancelled 2016-06-01
- Johnson, Charles D TX2024-08-13 active