Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RLX callsign genealogy
Currently held by Downing, Karl R
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 K4RLX's current licensee, walking backwards.
- Downing, Karl RFLgranted 2019-07-12cancelled 2026-01-23
Successor callsigns
Callsigns held now by people who previously held K4RLX.
No current licensee on record previously held this callsign.