Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9SMO callsign genealogy
Currently held by O'Shaughnessy, Stephen 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 K9SMO's current licensee, walking backwards.
- O'Shaughnessy, Stephen MINgranted 2019-06-10cancelled 2019-06-28
Successor callsigns
Callsigns held now by people who previously held K9SMO.
No current licensee on record previously held this callsign.