Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5SP callsign genealogy
Currently held by WROBEL, LEO A
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 W5SP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W5SP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5SP, oldest first.
- PHILLIPS, SIDNEY H TX1993-11-30 → cancelled 1998-12-07
- BROWN, GEORGE J AR2010-10-07 → cancelled 2022-12-28
- WROBEL, LEO A TX2023-01-18 active