Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9EFM callsign genealogy
Currently held by GALLAGHER, MICHAEL 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 W9EFM's current licensee, walking backwards.
- GALLAGHER, MICHAEL JNEgranted 1996-12-30cancelled 2000-02-18
Successor callsigns
Callsigns held now by people who previously held W9EFM.
- GALLAGHER, MICHAEL JNEgranted 2022-08-20