Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS4RRF callsign genealogy
Currently held by Palko, Leonard E
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 KS4RRF's current licensee, walking backwards.
- Palko, Leonard ETNgranted 2015-10-26cancelled 2016-01-01
Successor callsigns
Callsigns held now by people who previously held KS4RRF.
No current licensee on record previously held this callsign.