Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA3GTU callsign genealogy
Currently held by COLODZIN, MARTIN
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 KA3GTU's current licensee, walking backwards.
- Gunsher, Michelle CCOgranted 2022-05-10cancelled 2022-05-28
Successor callsigns
Callsigns held now by people who previously held KA3GTU.
- Gunsher, Michelle CCOgranted 2022-11-04
All historical holders
Every license row we've seen with the callsign KA3GTU, oldest first.
- COLODZIN, MARTIN MD1996-04-15 → cancelled 2008-04-16
- Gunsher, Michelle C CO2022-05-28 → cancelled 2022-11-04