Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7KIO callsign genealogy
Currently held by Petroski, Ron 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 W7KIO's current licensee, walking backwards.
- Petroski, Ronald JNVgranted 2022-12-24cancelled 2024-11-05
Successor callsigns
Callsigns held now by people who previously held W7KIO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7KIO, oldest first.
- KAMPLING, JOHN W NV2003-02-25 → cancelled 2015-05-27
- Petroski, Ron J NV2024-11-05 active