Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9CES callsign genealogy
Currently held by Kallio Jr, Harold J
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 W9CES's current licensee, walking backwards.
- Kallio Jr, Harold JTNgranted 2021-02-12cancelled 2021-03-12
Successor callsigns
Callsigns held now by people who previously held W9CES.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9CES, oldest first.
- ANDERSON, RALPH P IL2006-10-27 → cancelled 2019-02-12
- Kallio Jr, Harold J TN2021-03-12 active