Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4RT callsign genealogy
Currently held by FARMER, SHARON 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 AD4RT's current licensee, walking backwards.
- KF4ATXcancelledESTILL COUNTY HAM ORGANIZATIONKYgranted 1995-06-06cancelled 2004-01-03
Successor callsigns
Callsigns held now by people who previously held AD4RT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AD4RT, oldest first.
- FARMER, SHARON G KY1998-01-15 → cancelled 2003-08-28
- ESTILL COUNTY HAM ORGANIZATION KY2024-12-03 active