Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4HAC callsign genealogy
Currently held by Vienna Wireless Society
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 KI4HAC's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KI4HAC.
- K4XYactiveVienna Wireless SocietyVAgranted 2026-06-05