Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4ZLY callsign genealogy
Currently held by ARCE, JAIRO 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 KD4ZLY's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD4ZLY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4ZLY, oldest first.
- ARCE, JAIRO H FL2002-12-23 → cancelled 2007-02-06
- ARCE, JAIRO R FL2019-02-06 active