Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RTG callsign genealogy
Currently held by Sutherland, David A
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 K4RTG's current licensee, walking backwards.
- Tapp, Roger DNCgranted 2021-03-24cancelled 2021-04-13
Successor callsigns
Callsigns held now by people who previously held K4RTG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4RTG, oldest first.
- Sutherland, David A VA2007-04-02 → cancelled 2019-06-25
- Tapp, Roger D NC2021-04-13 active