Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5ZC callsign genealogy
Currently held by Ollikkala, Hannu U
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 AC5ZC's current licensee, walking backwards.
- OLLIKKALA, HANNU UTXgranted 1997-10-17cancelled 2000-07-04
Successor callsigns
Callsigns held now by people who previously held AC5ZC.
No current licensee on record previously held this callsign.