Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB5ONE callsign genealogy
Currently held by CLAYTON, MARK T
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 WB5ONE's current licensee, walking backwards.
- CLAYTON, MARK TARgranted 1998-04-14cancelled 2001-03-13
Successor callsigns
Callsigns held now by people who previously held WB5ONE.
- CLAYTON, MARK TOKgranted 2025-05-13