Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4IZL callsign genealogy
Currently held by BUCHANAN, MICHAEL B
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 WD4IZL's current licensee, walking backwards.
- BUCHANAN, MICHAEL BNCgranted 2001-07-19cancelled 2001-08-24
Successor callsigns
Callsigns held now by people who previously held WD4IZL.
- BUCHANAN, MICHAEL BNCgranted 2001-07-19cancelled 2001-08-24
All historical holders
Every license row we've seen with the callsign WD4IZL, oldest first.
- BUCHANAN, MICHAEL B NC1991-07-23 → cancelled 2001-07-19
- BUCHANAN, MICHAEL B NC2021-06-07 active