Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4XIO callsign genealogy
Currently held by MCKEAN, THOMAS A
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 K4XIO's current licensee, walking backwards.
- MCKEAN, THOMAS AOHgranted 2012-04-20cancelled 2017-06-23
Successor callsigns
Callsigns held now by people who previously held K4XIO.
No current licensee on record previously held this callsign.