Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9DBC callsign genealogy
Currently held by Sperling, Glenn
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 KB9DBC's current licensee, walking backwards.
- Sperling, GlennILgranted 2023-03-16cancelled 2023-04-04
Successor callsigns
Callsigns held now by people who previously held KB9DBC.
- Sperling, Gregg LILgranted 2019-05-06
All historical holders
Every license row we've seen with the callsign KB9DBC, oldest first.
- Sperling, Gregg L IL2002-10-24 → cancelled 2009-06-09
- Sperling, Glenn IL2023-04-04 active