Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AK4XX callsign genealogy
Currently held by MARKKANEN, MARKO
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 AK4XX's current licensee, walking backwards.
- MARKKANEN, MARKOGAgranted 2001-07-30cancelled 2001-08-18
Successor callsigns
Callsigns held now by people who previously held AK4XX.
No current licensee on record previously held this callsign.