Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4AIB callsign genealogy
Currently held by McMahon, Michael T
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 KO4AIB's current licensee, walking backwards.
- McMahon, Michael TFLgranted 2019-11-15cancelled 2019-11-26
Successor callsigns
Callsigns held now by people who previously held KO4AIB.
- McMahon, Michael TFLgranted 2019-11-15