Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS4UR callsign genealogy
Currently held by WALWORTH, ROBERT 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 KS4UR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KS4UR.
No current licensee on record previously held this callsign.