Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4SPL callsign genealogy
Currently held by FINLEY, JOHN G
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 N4SPL's current licensee, walking backwards.
- LoSacco, Stephen PNJgranted 2025-12-11cancelled 2026-03-21
Successor callsigns
Callsigns held now by people who previously held N4SPL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4SPL, oldest first.
- FINLEY, JOHN G FL1999-11-19 → cancelled 2012-02-14
- LoSacco, Stephen P TN2026-03-21 active