Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4SRJ callsign genealogy
Currently held by CERNUDA, ALFREDO
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 KA4SRJ's current licensee, walking backwards.
- CERNUDA III, ALFREDOFLgranted 2008-05-23cancelled 2018-04-20
Successor callsigns
Callsigns held now by people who previously held KA4SRJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA4SRJ, oldest first.
- CERNUDA, ALFREDO FL2005-11-15 → cancelled 2017-09-18
- CERNUDA III, ALFREDO CO2018-04-20 active