Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3DRT callsign genealogy
Currently held by Thompson, Donald R
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 K3DRT's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K3DRT.
No current licensee on record previously held this callsign.