Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K2AUX callsign genealogy
Currently held by ISOLDI, STEVEN K
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 K2AUX's current licensee, walking backwards.
- Masker Jr, Arthur CNJgranted 2010-12-21cancelled 2018-05-25
Successor callsigns
Callsigns held now by people who previously held K2AUX.
- ISOLDI, STEVEN KAZgranted 2014-08-29cancelled 2014-11-01
All historical holders
Every license row we've seen with the callsign K2AUX, oldest first.
- ISOLDI, STEVEN K AZ2006-07-18 → cancelled 2014-08-29
- Masker Jr, Arthur C NJ2018-05-25 active