Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4EFS callsign genealogy
Currently held by Brumbeloe, Walter 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 W4EFS's current licensee, walking backwards.
- Brumbeloe, Walter AGAgranted 2008-10-16cancelled 2008-11-04
Successor callsigns
Callsigns held now by people who previously held W4EFS.
No current licensee on record previously held this callsign.