Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4RDX callsign genealogy
Currently held by Rare DX Club Of Florida
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 K4RDX's current licensee, walking backwards.
- KF4YBZcancelledGRIFFIN, DENNIS Bcancelled 1998-06-02
Successor callsigns
Callsigns held now by people who previously held K4RDX.
No current licensee on record previously held this callsign.