Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7RRT callsign genealogy
Currently held by HAMAN, MICHAEL 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 K7RRT's current licensee, walking backwards.
- HAMAN, MICHAEL JUTgranted 2012-11-28cancelled 2020-03-07
Successor callsigns
Callsigns held now by people who previously held K7RRT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7RRT, oldest first.
- TAINTOR, READ R UT2007-12-18 → cancelled 2019-12-19
- HAMAN, MICHAEL J AZ2020-03-07 active