Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9ZCO callsign genealogy
Currently held by August W Janecek Memorial Amateur Radio Club
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 W9ZCO's current licensee, walking backwards.
- KD9PKTcancelledAugust W Janecek Memorial Amateur Radio ClubILgranted 2020-05-27cancelled 2020-06-16
Successor callsigns
Callsigns held now by people who previously held W9ZCO.
No current licensee on record previously held this callsign.