Confidence: Medium · Source: FCC ULS · As of 2026-10-24
K3FJ callsign genealogy
Currently held by JESTAEDT, FRED J
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 K3FJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K3FJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3FJ, oldest first.
- JESTAEDT, FRED J MD2014-07-29 → cancelled 2026-09-30
- HUNG, TUN FENG MD2026-10-16 active