Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3EFS callsign genealogy
Currently held by MC GAHERN, JOHN J
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 N3EFS's current licensee, walking backwards.
- McGahern, John JNYgranted 2021-08-20cancelled 2021-09-11
Successor callsigns
Callsigns held now by people who previously held N3EFS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3EFS, oldest first.
- MC GAHERN, JOHN J NY1996-04-01 → cancelled 2008-04-02
- McGahern, John J NY2021-09-11 active