Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KR4LSM callsign genealogy
Currently held by Ruggiero, Josh
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 KR4LSM's current licensee, walking backwards.
- Ruggiero, JoshFLgranted 2026-04-10cancelled 2026-04-23
Successor callsigns
Callsigns held now by people who previously held KR4LSM.
No current licensee on record previously held this callsign.