Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9POL callsign genealogy
Currently held by Czelusniak, Slav
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 K9POL's current licensee, walking backwards.
- Czelusniak, SlavILgranted 2014-05-29cancelled 2015-03-03
Successor callsigns
Callsigns held now by people who previously held K9POL.
- REYES, PABLO LPRgranted 2020-03-24
All historical holders
Every license row we've seen with the callsign K9POL, oldest first.
- REYES, PABLO L PR2002-04-02 → cancelled 2010-04-24
- Czelusniak, Slav NM2025-02-25 active