Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1SZ callsign genealogy
Currently held by Pultorak, David L
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 K1SZ's current licensee, walking backwards.
- Pultorak, David LOHgranted 2014-06-13cancelled 2017-12-22
Successor callsigns
Callsigns held now by people who previously held K1SZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1SZ, oldest first.
- CHAMBERLAND, ROGER R CT2007-07-24 → cancelled 2015-12-01
- Pultorak, David L OH2017-12-22 active