Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9JES callsign genealogy
Currently held by PLONKA, MARVIN C
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 W9JES's current licensee, walking backwards.
- KUJAWA, JESSE MWIgranted 2004-10-01cancelled 2008-04-18
Successor callsigns
Callsigns held now by people who previously held W9JES.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9JES, oldest first.
- PLONKA, MARVIN C IL1995-09-07 → cancelled 2007-09-08
- KUJAWA, JESSE M WI2018-01-25 active