Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS4ZL callsign genealogy
Currently held by ROBINETTE, ROBERT W
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 KS4ZL's current licensee, walking backwards.
- CRUZ, HECTORFLgranted 1996-11-13cancelled 2005-08-10
- KF4FGSno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KS4ZL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KS4ZL, oldest first.
- ROBINETTE, ROBERT W KY1995-06-20 → cancelled 2005-07-21
- CRUZ, HECTOR FL2005-08-10 → cancelled 2010-06-10