Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9BLL callsign genealogy
Currently held by PILLES, JOHN 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 KC9BLL's current licensee, walking backwards.
- Pilles, John DILgranted 2002-03-05cancelled 2002-04-05
Successor callsigns
Callsigns held now by people who previously held KC9BLL.
- PILLES, JOHN DILgranted 2022-03-08