Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8SPL callsign genealogy
Currently held by DIEHL JR, LESLIE L
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 W8SPL's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W8SPL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8SPL, oldest first.
- DIEHL JR, LESLIE L OH1996-06-29 → cancelled 2008-07-01
- Supplee, Michael N MI2025-11-26 active