Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4LGO callsign genealogy
Currently held by Casto, Dylan K
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 W4LGO's current licensee, walking backwards.
- Casto, Dylan KFLgranted 2017-02-16cancelled 2017-03-12
Successor callsigns
Callsigns held now by people who previously held W4LGO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4LGO, oldest first.
- ANDERSON, THOMAS M FL1988-08-23 → cancelled 2000-08-24
- Casto, Dylan K FL2017-03-12 active