Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9GMH callsign genealogy
Currently held by BLUME, RONALD K
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 K9GMH's current licensee, walking backwards.
- NOSEK, WILLIAM EWIgranted 2017-03-29cancelled 2020-04-07
Successor callsigns
Callsigns held now by people who previously held K9GMH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9GMH, oldest first.
- BLUME, RONALD K IN2007-03-22 → cancelled 2019-05-21
- MacKay, William J WI2020-04-07 active