Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7UM callsign genealogy
Currently held by Gutshall, Glenn
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 N7UM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N7UM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7UM, oldest first.
- MC DONALD, MARVIN L MT2006-09-21 → cancelled 2015-11-11
- Gutshall, Glenn OR2017-12-01 active