Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TSP callsign genealogy
Currently held by Popwell Sr, Johnnie D
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 W4TSP's current licensee, walking backwards.
- Popwell Sr, Johnnie DFLgranted 1999-07-13cancelled 2006-12-01
Successor callsigns
Callsigns held now by people who previously held W4TSP.
No current licensee on record previously held this callsign.