Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6GMB callsign genealogy
Currently held by Gimby, Grant E
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 K6GMB's current licensee, walking backwards.
- Gimby, Grant ECAgranted 2017-12-05cancelled 2018-01-17
Successor callsigns
Callsigns held now by people who previously held K6GMB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6GMB, oldest first.
- BROWN, GRACE M CA1998-10-20 → cancelled 2010-10-21
- Gimby, Grant E CO2018-01-17 active