Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4ZPD callsign genealogy
Currently held by SORIANO JR, JUAN P
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 KF4ZPD's current licensee, walking backwards.
- WD4OSKcancelledcancelled 1998-08-03
Successor callsigns
Callsigns held now by people who previously held KF4ZPD.
No current licensee on record previously held this callsign.