Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4DK callsign genealogy
Currently held by GUZMAN CRUZ, ANIBAL
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 KP4DK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KP4DK.
- GUZMAN CRUZ, ANIBALPRgranted 2025-07-01
All historical holders
Every license row we've seen with the callsign KP4DK, oldest first.
- ANGUEIRA, ANTONIO PR1994-11-07 → cancelled 2006-11-08
- GUZMAN CRUZ, ANIBAL PR2017-05-10 → cancelled 2025-07-01