Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MPO callsign genealogy
Currently held by O'Neill, 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 W5MPO's current licensee, walking backwards.
- O'Neill, Michael PTXgranted 2013-07-11cancelled 2013-07-30
Successor callsigns
Callsigns held now by people who previously held W5MPO.
No current licensee on record previously held this callsign.