Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9YNP callsign genealogy
Currently held by JUDZIEWICZ, PAUL A
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 KB9YNP's current licensee, walking backwards.
- JUDZIEWICZ, PAUL AMNgranted 2025-05-24cancelled 2025-06-14
Successor callsigns
Callsigns held now by people who previously held KB9YNP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9YNP, oldest first.
- Judziewicz, Paul A WI2000-12-12 → cancelled 2012-12-13
- JUDZIEWICZ, PAUL A MN2025-06-14 active