Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9KRS callsign genealogy
Currently held by SPERLING, KEVIN R
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 KB9KRS's current licensee, walking backwards.
- SPERLING, KEVIN RILgranted 2012-07-26cancelled 2015-05-23
Successor callsigns
Callsigns held now by people who previously held KB9KRS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9KRS, oldest first.
- ALLENDER, STEVEN R IL1995-05-26 → cancelled 2007-05-27
- SPERLING, KEVIN R IL2015-05-23 active