Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0SWO callsign genealogy
Currently held by Pudloski, John 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 N0SWO's current licensee, walking backwards.
- Pudloski, John JRIgranted 2007-01-24cancelled 2007-02-16
Successor callsigns
Callsigns held now by people who previously held N0SWO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0SWO, oldest first.
- JOHNSON, STEVE W SD1992-06-02 → cancelled 2004-06-03
- Pudloski, John J RI2017-02-03 active