Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RSE callsign genealogy
Currently held by Robertson, Matthew G
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 K4RSE's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4RSE.
- Robertson, Matthew GNCgranted 2017-08-05cancelled 2017-12-02
All historical holders
Every license row we've seen with the callsign K4RSE, oldest first.
- HALL, IRBY H FL1997-08-29 → cancelled 2009-09-01
- Robertson, Matthew G NC2017-06-03 → cancelled 2017-08-05