Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2UM callsign genealogy
Currently held by BUHYOFF, GREGORY 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 K2UM's current licensee, walking backwards.
- Buhyoff, Greg JMEgranted 2019-03-01cancelled 2020-12-04
Successor callsigns
Callsigns held now by people who previously held K2UM.
- Buhyoff, Greg JMEgranted 2019-03-01cancelled 2020-12-04
All historical holders
Every license row we've seen with the callsign K2UM, oldest first.
- BUHYOFF, GREGORY J ME2016-09-20 → cancelled 2019-03-01
- Buhyoff, Gregory J ME2020-12-04 active