Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6MAO callsign genealogy
Currently held by Oatman, Michael A
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 K6MAO's current licensee, walking backwards.
- Oatman, Michael ACAgranted 2001-09-21cancelled 2002-02-27
Successor callsigns
Callsigns held now by people who previously held K6MAO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6MAO, oldest first.
- Oatman, Michael A CA2002-02-01 → cancelled 2002-02-04
- Oatman, Michael A AK2022-02-26 active