Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9JMT callsign genealogy
Currently held by JOHNSON, WALTER J
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 K9JMT's current licensee, walking backwards.
- TYMICK, JOHN MWIgranted 2002-08-07cancelled 2010-02-09
- KD4GIBno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K9JMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9JMT, oldest first.
- JOHNSON, WALTER J IN1997-03-25 → cancelled 2009-03-26
- TYMICK, JOHN M WI2020-01-22 active