Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS4WF callsign genealogy
Currently held by PICHARDO, ROBERTO A
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 KS4WF's current licensee, walking backwards.
- KA4FEYno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KS4WF.
No current licensee on record previously held this callsign.