Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3EFE callsign genealogy
Currently held by John, Keefe
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 K3EFE's current licensee, walking backwards.
- John, Keefe WWIgranted 2007-04-30cancelled 2007-06-05
Successor callsigns
Callsigns held now by people who previously held K3EFE.
No current licensee on record previously held this callsign.