Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0ISU callsign genealogy
Currently held by Prins, Joshua M
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 K0ISU's current licensee, walking backwards.
- Prins, Joshua MWIgranted 2000-02-23cancelled 2007-09-05
Successor callsigns
Callsigns held now by people who previously held K0ISU.
- Prins, Joshua MWIgranted 2024-02-13