Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB9ATC callsign genealogy
Currently held by PIVONKA, JOSEPH D
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 WB9ATC's current licensee, walking backwards.
- PIVONKA, JOSEPH DILgranted 2004-01-28cancelled 2012-10-23
- KC7ASDno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WB9ATC.
- Pivonka, Joseph DAZgranted 2020-08-21