Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7TRT callsign genealogy
Currently held by JONES, JOHN L
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 K7TRT's current licensee, walking backwards.
- Magnuson, David AMTgranted 2011-09-07cancelled 2020-07-10
Successor callsigns
Callsigns held now by people who previously held K7TRT.
- JONES, JOHN LMTgranted 2005-03-08cancelled 2010-03-30
All historical holders
Every license row we've seen with the callsign K7TRT, oldest first.
- JONES, JOHN L MT2005-03-08 → cancelled 2010-01-28
- Magnuson, David A MT2020-07-10 active