Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5MKJ callsign genealogy
Currently held by SHULTZ, LOYD C
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 K5MKJ's current licensee, walking backwards.
- Johnson, James MTXgranted 2024-02-29cancelled 2024-06-07
Successor callsigns
Callsigns held now by people who previously held K5MKJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5MKJ, oldest first.
- SHULTZ, LOYD C TX2006-01-24 → cancelled 2018-04-11
- Johnson, James M TX2024-06-07 active