Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4CSM callsign genealogy
Currently held by EDMONSTON, ROBERT A
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 N4CSM's current licensee, walking backwards.
- Hernandez, EleazarFLgranted 2021-09-28cancelled 2022-03-15
Successor callsigns
Callsigns held now by people who previously held N4CSM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4CSM, oldest first.
- EDMONSTON, ROBERT A PA2009-12-18 → cancelled 2021-12-21
- Hernandez, Eleazar FL2022-03-15 active