Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4DIX callsign genealogy
Currently held by Margolis, Joshua D
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 KO4DIX's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KO4DIX.
- Margolis, Joshua DGAgranted 2020-06-01cancelled 2023-06-27