Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9DMI callsign genealogy
Currently held by GESTL, CARL J
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 W9DMI's current licensee, walking backwards.
- Magnus, Donald IWIgranted 2004-03-08cancelled 2013-11-26
Successor callsigns
Callsigns held now by people who previously held W9DMI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9DMI, oldest first.
- GESTL, CARL J WI1988-05-03 → cancelled 2000-05-04
- Magnus, Donald I WI2013-11-26 → cancelled 2026-03-07