Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB6MO callsign genealogy
Currently held by O'Brien, Michael P
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 WB6MO's current licensee, walking backwards.
- O'Brien, Michael PCAgranted 2012-04-10cancelled 2012-05-01
Successor callsigns
Callsigns held now by people who previously held WB6MO.
No current licensee on record previously held this callsign.