Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9ILA callsign genealogy
Currently held by PHILIPSEN, DAVID B
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 KC9ILA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC9ILA.
- PHILIPSEN, DAVID BILgranted 2006-01-10cancelled 2006-02-07
All historical holders
Every license row we've seen with the callsign KC9ILA, oldest first.
- PHILIPSEN, DAVID B IL2005-11-15 → cancelled 2006-01-10
- PHILIPSEN, DAVID B IL2026-02-10 active