Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB5BYL callsign genealogy
Currently held by SMITH, JOHN C
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 WB5BYL's current licensee, walking backwards.
- Duncan, Colton MTXgranted 2021-08-30cancelled 2021-09-18
Successor callsigns
Callsigns held now by people who previously held WB5BYL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB5BYL, oldest first.
- SMITH, JOHN C TX2006-03-30 → cancelled 2018-04-11
- Duncan, Colton M TX2021-09-18 active