Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5IDT callsign genealogy
Currently held by KUYKENDALL, MADISON W
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 W5IDT's current licensee, walking backwards.
- TRUJILLO, ISAAC DNMgranted 2005-06-20cancelled 2007-06-08
Successor callsigns
Callsigns held now by people who previously held W5IDT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5IDT, oldest first.
- KUYKENDALL, MADISON W TX1995-01-10 → cancelled 2007-01-11
- TRUJILLO, ISAAC D NM2017-03-13 active