Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4RTT callsign genealogy
Currently held by Trimble, Robert T
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 KY4RTT's current licensee, walking backwards.
- Trimble, Robert TKYgranted 2014-05-16cancelled 2017-05-16
Successor callsigns
Callsigns held now by people who previously held KY4RTT.
No current licensee on record previously held this callsign.