Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5MTK callsign genealogy
Currently held by JACKSON, JOHN W
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 K5MTK's current licensee, walking backwards.
- JACKSON, JOHN WNMgranted 2018-05-09cancelled 2021-01-19
Successor callsigns
Callsigns held now by people who previously held K5MTK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5MTK, oldest first.
- SHOAF, ELMER L TX1988-06-07 → cancelled 2000-06-09
- JACKSON, JOHN W NM2021-01-19 active