Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9MRG callsign genealogy
Currently held by Gregory, Mark 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 K9MRG's current licensee, walking backwards.
- GREENHAM, MITCHELL RTNgranted 2023-12-30cancelled 2024-01-26
Successor callsigns
Callsigns held now by people who previously held K9MRG.
- Gregory, Mark RTXgranted 2025-08-08
All historical holders
Every license row we've seen with the callsign K9MRG, oldest first.
- Gregory, Mark R TX2003-07-09 → cancelled 2005-08-13
- GREENHAM, MITCHELL R TN2024-01-26 active