Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0SVH callsign genealogy
Currently held by Claeys, Walter T
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 K0SVH's current licensee, walking backwards.
- Claeys, Mark TIAgranted 2017-12-06cancelled 2024-02-03
Successor callsigns
Callsigns held now by people who previously held K0SVH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0SVH, oldest first.
- Claeys, Walter T IA2000-03-08 → cancelled 2012-03-23
- CLAEYS, MARK T IA2024-02-03 active