Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AK4UK callsign genealogy
Currently held by Ulkowski, 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 AK4UK's current licensee, walking backwards.
- Ulkowski, Michael PTNgranted 2011-06-14cancelled 2011-09-24
Successor callsigns
Callsigns held now by people who previously held AK4UK.
No current licensee on record previously held this callsign.