Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1UM callsign genealogy
Currently held by AMERO, MATTHEW R
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 K1UM's current licensee, walking backwards.
- AMERO, MATTHEW RWIgranted 2014-02-04cancelled 2014-11-21
Successor callsigns
Callsigns held now by people who previously held K1UM.
- DANLEY, THADDEUS ANCgranted 2020-07-18cancelled 2022-05-20
All historical holders
Every license row we've seen with the callsign K1UM, oldest first.
- DANLEY, THADDEUS A MA2000-07-14 → cancelled 2000-10-13
- MANUELIAN, KENNETH S FL2002-11-02 → cancelled 2014-11-04
- AMERO, MATTHEW R MI2024-09-25 active