Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9ROD callsign genealogy
Currently held by KOSTECKI, MATTHEW 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 KB9ROD's current licensee, walking backwards.
- Mansfield, David RILgranted 2026-03-17cancelled 2026-04-04
Successor callsigns
Callsigns held now by people who previously held KB9ROD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9ROD, oldest first.
- KOSTECKI, MATTHEW J WI2007-08-01 → cancelled 2019-10-22
- Mansfield, David R IL2026-04-04 active