Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5MO callsign genealogy
Currently held by Brewer, John M
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 K5MO's current licensee, walking backwards.
- Brewer, John MNCgranted 1996-08-29cancelled 2003-01-22
Successor callsigns
Callsigns held now by people who previously held K5MO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5MO, oldest first.
- SHEEHAN, ROBERT P TX1997-06-26 → cancelled 1999-03-10
- Brewer, John M NC2022-12-01 active