Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3ZPP callsign genealogy
Currently held by STOUTH, CHARLES 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 W3ZPP's current licensee, walking backwards.
- Kays, Steven GTXgranted 2007-09-25cancelled 2010-02-19
Successor callsigns
Callsigns held now by people who previously held W3ZPP.
- Kays, Steven GTXgranted 2020-08-18
All historical holders
Every license row we've seen with the callsign W3ZPP, oldest first.
- STOUTH, CHARLES L PA1998-01-23 → cancelled 2010-01-26
- Kays, Steven G TX2010-02-19 → cancelled 2010-04-27