Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9MKN callsign genealogy
Currently held by Nieto, Michael 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 K9MKN's current licensee, walking backwards.
- Nieto, Michael KCAgranted 2021-07-01cancelled 2021-07-20
Successor callsigns
Callsigns held now by people who previously held K9MKN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9MKN, oldest first.
- COWENS, JOHN O IN2001-04-11 → cancelled 2013-07-10
- Nieto, Michael K CA2021-07-20 active