Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4EXL callsign genealogy
Currently held by Killingsworth, Stephen 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 W4EXL's current licensee, walking backwards.
- Killingsworth, Stephen LFLgranted 2017-09-25cancelled 2017-10-14
Successor callsigns
Callsigns held now by people who previously held W4EXL.
- Killingsworth, Stephen LFLgranted 2017-11-14cancelled 2017-12-22