Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FGK callsign genealogy
Currently held by KNIGHT, ROY 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 K4FGK's current licensee, walking backwards.
- KAESTNER JR, FREDERICK GKYgranted 2022-08-18cancelled 2022-09-27
Successor callsigns
Callsigns held now by people who previously held K4FGK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4FGK, oldest first.
- KNIGHT, ROY A VA1996-04-04 → cancelled 2008-04-05
- KAESTNER JR, FREDERICK G KY2022-09-27 active