Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2DSO callsign genealogy
Currently held by Margarone, John R
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 K2DSO's current licensee, walking backwards.
- Margarone, John RNYgranted 2023-01-18cancelled 2023-02-07
Successor callsigns
Callsigns held now by people who previously held K2DSO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K2DSO, oldest first.
- MARGARONE JR, JOSEPH E NY2007-10-10 → cancelled 2020-01-07
- Margarone, John R NY2023-02-07 active