Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB3AO callsign genealogy
Currently held by RUTKOWSKI, MARK M
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 AB3AO's current licensee, walking backwards.
- RUTKOWSKI, MARK MPAgranted 2003-02-27cancelled 2003-02-28
Successor callsigns
Callsigns held now by people who previously held AB3AO.
No current licensee on record previously held this callsign.