Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA4EF callsign genealogy
Currently held by Montague, Robert C
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 NA4EF's current licensee, walking backwards.
- Montague, Robert CNCgranted 2021-08-09cancelled 2026-07-28
Successor callsigns
Callsigns held now by people who previously held NA4EF.
No current licensee on record previously held this callsign.