Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5MRM callsign genealogy
Currently held by McGill, Mike 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 K5MRM's current licensee, walking backwards.
- Munsell, Michael RTXgranted 2023-09-06cancelled 2023-09-26
Successor callsigns
Callsigns held now by people who previously held K5MRM.
- McGill, Mike RTXgranted 2017-08-22
All historical holders
Every license row we've seen with the callsign K5MRM, oldest first.
- McGill, Mike R TX2017-04-25 → cancelled 2017-08-22
- Munsell, Michael R TX2023-09-26 active